Abstract
The current studies analytically summarize the impact of magnetohydrodynamic and thermal radiation on the non-Newtonian continuous uniform motion of viscid non-compressible nanofluid across a penetrable stretching/shrinking sheet, even though accomplish Navier's first and second order slips along mass transpiration. Blood-bearing silver and copper nanomaterials have distinct flow and heat transfer properties when exposed to heat. Silver (Ag) as well as copper (Cu) nanoparticles are assumed to be present in blood as the non-Newtonian liquid; this fluid serves as the base. We anticipate that the current study will be useful in fields including food, petrochemical products, and medicines, as well as blood circulation, and highly beneficial for patients who are dealing with blood clotting in the uterus, which may result in infertility or cancer, to evaluate the blood flow in the tube. Employing the similarity conversion technique, the ruling partial differential equations are modified into a couple of non-linear ordinary differential equations. Then the transformed ordinary differential equations are analytically solved with the Laplace transformation and expressed in terms of an incomplete gamma function. The current analytical results are compared to previous studies. It is addressed how several physical features such as magnetic field M, Navier’s first and second order slip, permeability, Prandtl number Pr, and radiation parameter affect non-dimensional velocity as well as temperature patterns through graphs. The results obtained reveal that there is an enhancement in the rate of heat transfer with the rise in nanoparticle volume fraction and radiation. The temperature distribution is also influenced by the presence of Prandtl numbers, radiation, solid volume fraction, permeability, and slip conditions. This shows that the solid volume fraction of nanoparticles can be used to control the behaviour of heat transfer and nanofluid flows.
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Introduction
For the past 20 years, various applications that are presently in use or that are intended have stimulated intensive research towards nanofluids or suspensions with nanoparticles. Although nanoparticles are employed in the flow regime throughout all real-world scenarios, the structure of the flow is dictated by the appropriate thermophysical properties of these nanofluids. Recently, nanofluids have been implemented for industrial and technological purposes. Printing, photovoltaic panels, geothermal power systems, electronic items, nanoscale gadgets for illness, refrigeration of metallic particles, microprocessors, lasers, cardboard boxes, and inkjets are only a few possibilities for nanoparticles. 100-nm-diameter nanocomposites are a mixture of solid and liquid nanostructures. The concept of nanofluids is described by Choi et al.1 as being initially used in order to optimize the materials thermal performance. Eastman et al.2 developed Copper nanoparticles were immersed in a polyethylene glycol-based nanoliquid that had greater heat stability than almost any other conventional base liquid, particularly ethylene glycol.
Usually, the nanomaterials used within nanoliquids consist of metals (aluminium, copper), oxides (aluminium oxides), nitrides (aluminium nitrate, silicon nitrate), carbides (silicon carbide), or non-metals (CNTs, graphite). Additionally, biological research seems to be employing a variety of fragments, including deoxyribonucleic acid, ribonucleic acid, biomolecules, and fluids articulated in porous materials3,4,5. Researchers focusing on global ecosystems have recently raised thermal conductivity and optimized heat transportation characteristics by mixing two or more nanoparticles into a common base liquid. In works like those by researchers6,7,8,9,10,11,12,13, initiatives to address the mobility of nanoparticles under several circumstances as well as their features are shown. The study of connections among electromagnetic forces as well as electrically conducting fluids is described as magnetohydrodynamics. The Swedish researcher Hannes Alves et al.14 developed the concept of MHD. Nowadays, magnetic fields are extensively employed in numerous major industries. In refrigeration or heating techniques, the magnetic situation is taken into account to enhance thermal performance. Because of its broad range of implications, the researchers used the magnetic field effect.
The latest study by Mahabaleshwar et al.15,16,17,18,19,20 on the casson hybrid nanofluid, nanofluids, dusty fluids, and carbon nanotubes physical phenomena under the presence of MHD and heat transfer along mass transpiration due to stretching/shrinking surfaces is discussed. Due to its special features, silver has a broad range of biological purposes. Generally, silver-containing products are employed to fight a wide range of bacteria. Additionally, according to verifiable studies, Ag nanoparticles can replace conventional anticancer treatments in a manner that is more ecologically responsible and biodegradable21. The most significant biological fluid is blood, which is a fluid made up of many types of cells dispersed in a soluble fluid medium (the plasma). It ought to be emphasized that red blood cells in plasma have a role in rotational motion whenever a relative velocity arises. The body's cells have both an angular orbital momentum and an angular gyration moment. Hence, blood can be conceived as a non-Newtonian fluid with a uniform density. There are a variety of polar fluid hypotheses that can be explored, notably Stokes concept22.
Researchers and scientists from all around the universe have been working on various features of nanotechnology over the past few decades. For a bio-nanofluid, Ghassemi et al.23 studied a new efficient thermal conductance concept (blood with nanoparticle Al2O3). A good deal of researchers24,25 are investigating theoretical studies that address the non-Newtonian blood circulation in stenotic arteries because capillary membranes are perhaps stretchy, absorptive, and changeable. Moreover, human blood was used as a base fluid to investigate heat convective boundary movements26,27. To date, the trustworthy literature regarding recent developments in this fluid flow can be found in Refs.28,29,30,31,32,33.
To the author's best knowledge and inspired by the aforementioned studies and potential implications in the current work, it is important to examine the impacts of magnetohydrodynamics as well as heat radiation on the Navier's first and second order slips along mass transpiration in a non-Newtonian constant laminar stream of viscous incompressible nanofluid across a porous stretching/shrinking surface. By using a similarity conversation, the associated partial differential equations for dominating flow are converted via a system of ordinary differential equations. Analytical approaches are found as a function of nonlinear integrated differential equations.
Physical problem and governing equation
Considering the flow of incompressible viscous nanoparticles in two dimensions across a porous stretching/shrinking surface. The surface is extended out within the direction of motion as taking on the \(x\)-axis, with the \(y\)-axis perpendicular to the slit. A uniform magnetic field \(B_{0}\) is applied to the fluid flow. When two equal-strength forces are imposed towards the \(x\)-axis to restrain the liquid movement in the region \(y > 0\). Suppose the sheet is submerged in a fluid with a consistent ambient temperature \(T_{\infty }\) as well as a surface temperature \(T_{0}\).
Considering that the fluid is inviscid, the principle of mass conservation is simplified34 as follows:
together with the principle of conservation of linear momentum defined as34,35 following
The modified system of equations for mass conservation and the sustained linear momentum34,35,36 are stated as
and energy equation is
here (u, v) determines the velocities in the x and y axis correspondingly, dynamic viscosity of nanofluid is represented as \(\mu_{nf}\), \(\rho_{nf}\) is the nanofluids density, permeability of the fluid is denoted as K, \(\sigma_{nf}\) is the electrical conductivity of the nanofluid, \(\chi \, = \,\frac{{\kappa_{nf} }}{{\left( {\rho C_{p} } \right)_{nf} }}\) is the thermal diffusivity of the nanofluid, whereas thermal conductivity of nanofluid is \(\kappa_{nf}\), \(\left( {\rho C_{p} } \right)_{nf}\) acts as heat capacitance of nanofluids.
The related boundary conditions3,4,5 are
where corresponding slip coefficients of the first and second orders are represented through the quantities \(\xi_{1}\) and \(\xi_{2}\). \(d\) is the stretching/shrinking parameter or proportionate shearing at the border. \(\xi\) is the temperature jump constant to be determined later. Moreover \(v_{c}\) determines mass transpiration factor, represents the suction or blowing depending on \(v_{c} > 0\) or \(v_{c} < 0\) respectively.
Implementing the following similarity conversation37
here \(\alpha \,\) is the constant. To model the movement of thermal radiation, the Rosseland approximation is utilized. In this approximate model, the heat flow is supposed to be proportional to the temperature differential, and it flows from solid surface to the liquid. As a result of this, the thermal radiation flux \(q_{r}\) to be expressed38,39,40,41,42 as follows
here \(\sigma^{*}\) stands for the Stefan-Boltzmann constant along with \(k^{*}\) stands for mean absorption coefficient. While \(T^{4}\) may conceivably visualized as \(T^{4} \, \cong \,4T_{\infty }^{3} T - 3T_{\infty }^{4} ,\) and ensure there are suitable low temperature changes within the flowing fluid. With this, Eq. (8) can be written as
employing of similarity conversation in Eqs. (4)–(5), one obtain
here
\(K_{1} \, = \,\frac{{\mu_{f} }}{{\rho_{f} \alpha K}}\) is the inverse Darcy number (porosity parameter).
\(M\, = \,\frac{{\sigma_{nf} B_{0}^{2} }}{{\rho_{f} \alpha }},\) acts as coefficient of Magnetic field (Hartmann number).
\(\Pr \, = \,\frac{{\mu_{f} \left( {C_{p} } \right)_{f} }}{{k_{f} }}\), be the Prandtl number.
In additionally,
\(N_{r} = \,\frac{{16\sigma^{*} T_{\infty }^{3} }}{{3k^{*} k_{f} }}\) is the radiation parameter.
With transformed frontier constraints are
here \(\lambda_{1} \, = \,\xi_{1} \sqrt {\frac{\alpha }{{v_{f} }}} > 0,\) and \(\lambda_{2} \, = \,\xi_{2} \frac{\alpha }{{v_{f} }} < 0\) are first and second order slips parameter, and mass transpiration factor is represented as \(V_{c\,} \, = \,\frac{{v_{c} }}{{\sqrt {\alpha v_{f} } }}\).
The effective dynamic viscosity of the nanofluid is43 stated as
nanofluid density is described44 as
the thermal conductivity of nanofluid is defined45 as
effective heat capacitance of the nanofluids denoted46 as
here \(\phi\) is the volume fraction of the nanofluid.
Analytical solution for momentum equation
In the present article, we will show a closed form exact solution of Eq. (10) together with the boundary conditions (12), one may assume the solution has a format as
where \(\delta > 0,\) is yet to be estimated latterly on, moreover the constants A and B must be calculated with employing Eq. (12).
presently,
In order obtained following algebraic equation by incorporating Eq. (13) into Eqs. (10):
Equation (14) rewritten as
where
Equation (15) gives four real roots which helps to provide solution for the current problem. Within this part we have to obtained an analytic approach to the momentum equation. Next move on to the analytical solution for the temperature equation which is discussed in further section.
Solution for the temperature region of fluid
Now introduce Eq. (13) in Eq. (11) we obtain as follow
In the following section, we use the Laplace transformation to examine the temperature solution in the context of the generalized incomplete gamma function and by framing a novel variable as
\(t\, = \,e^{ - \delta \eta } ,\) we achieve
where as
with transformed boundary constraints are
Currently we interpolate Laplace transformation upon respective sides of the Eq. (18), once we achieve
here \(\Phi \left( s \right)\) is the Laplace transformation of \(\theta \left( t \right)\,\), that is \(L\left\{ {\theta \left( t \right)} \right\}\, = \,\Phi \left( s \right)\). To execute final expression, it should be observed that the initial modified boundary condition \(\theta \left( 0 \right)\, = \,0\) was used. So as to integrating the Eq. (20), we gathered
In which \(c\) is the integration constant which is to be determined later. For the sake of introduced the reverse Laplace transformation \(L^{ - 1}\) to Eq. (21). Thus, \(\frac{m}{{A_{3} + N_{r} }}\) must be confined to be \(\frac{m}{{A_{3} + N_{r} }} < 1\). As a result, we have follows
while \(*\) signifies the convolution property as stated by
In order that \(L^{ - 1} \left\{ {\Psi \left( s \right)} \right\}\, = \,\psi \left( t \right)\) with \(L^{ - 1} \left\{ {\Theta \left( s \right)} \right\}\, = \,\varphi \left( t \right)\). Consequently Eq. (22) develops as
Put \(\sigma \, = \, - n\mu\) in Eq. (24), we obtain
now accomplish second modified boundary constraints i.e. \(\theta \left( 1 \right)\, = \,1 + \xi \left( {\frac{\partial \theta }{{\partial \eta }}} \right)_{\eta \to 1}\), we acquire the value of \(c\) as
currently substitute Eq. (26) into Eq. (25), hence, \(\theta \left( t \right)\) is presented in the precise form shown below
in this section we obtained exact analytic solution for energy equation in terms of generalized gamma functions with employing Laplace transformation formula. Proceed to following section, where we must discuss the current problem outcomes.
Interpretation of results
We go into greater detail about the physical aspects of the interest constraints related to the current blood flow models. Setting the numerical value of the Prandtl number \(\Pr\) is 21 for blood. The range of the parameter taken as \(0.5 \le M \le 5,\)\(0.1 \le \phi \le 0.6,\)\(- 1 \le V_{c} \le 4\), \(0.1 \le K_{1} \le 5,\)\(0.2 \le \lambda_{1} \le 6,\)\(- 6 \le \lambda_{2} \le 0.5,\) \(0.1 \le \xi \le 5,\) and \(0.01 \le N_{r} \le 5\). The results found to be in good agreement. To analyze the flow and heat transfer characteristics of the nanofluid. The computed analytical results of the velocity, temperature as well as shear stress, rates of heat transfer for a benefits of the regulating circumstances, particularly magnetic field \(\left( M \right)\), stretching/shrinking strength factor \(\left( d \right)\), first \(\left( {\lambda_{1} } \right)\) together with second order \(\left( {\lambda_{2} } \right)\) Navier slip conditions, mass transpiration parameter \(\left( {V_{c} } \right)\), inverse Darcy number parameter \(\left( {K_{1} } \right)\), Prandtl number \(\left( {\Pr } \right)\) together with radiation parameter \(\left( {N_{r} } \right)\) are demonstrated graphically. Also the physical properties of nanofluids in base fluid are mentioned in the Table 1. Validation of present study and already existing works as shown in Table 2.
The physical mechanism of the problem is given in the Fig. 1. The stimulus of magnetic parameter \(M\) on velocity as well as temperature profile is demonstrated through a Fig. 2a–c, which illustrates the role of hartmann number upon velocity outline \(f\left( \eta \right),\,\,\,\frac{\partial f}{{\partial \eta }}\), with thermal distribution \(\theta \left( \eta \right)\). Figure 2a,b It is observed that rising strength of hartmann number diminishes momentum of the fluid. Hence magnetic field generates force which acts reverse direction. The flow field encounters resistance from this force (Lorentz force) and rate of transport is minimized considerably by keeping the values at \(d = 1,\,\lambda_{1} = 0.5,\,\lambda_{2} = 0.05,\) and \(K_{1} = 0.1\). The mobility of the nanoparticles inside the surface is reduced by increasing the intensity of the hartmann number, which also has an adverse effect on the bloods viscosity. Also we noticed that copper-blood nanofluid has more velocity distribution as compared with silver-blood nanofluid. Figure 2c depicts the changes of the nanofluid hartmann number on temperature distribution. It has been noted that as hartmann number broadening, the temperature also growing. Due to nanoparticles, bulk temperature as well as thermal boundary layer develops in the nanoparticles because of its more heat conductance. Besides silver nanoparticles has more temperature than that of copper nanoparticles, in view of the fact that silver has a higher heat conductance than copper nanoparticles.
Figure 3a,b presents the tangential velocity distribution for several desirability of the primary order slip \(\lambda_{1}\) parameter with keeping the values at \(d = - 1,\,M = 0.5,\,\lambda_{2} = 0.1,\,K_{1} = 0.5,\,\) and \(V_{c} = 2\). This graph apparently express that the lowering the Navier slip, upshots in the diminishes the velocity barrier. Here perceives that width of the nanofluid velocity boundary subject to upper solution branch is reduced as correlated to the lower solution branch. Likewise, one can observe the relationship between the growing velocity boundary width and improvements in the stretching/shrinking factor under stated slip parameter with mass suction parameter. Consequently, decline in mass suction causes a reduction in the acceleration border for other static physical parameters. Although when mass injection is included, the mobility barrier grows as the slip parameter's values rise. As a result, the slip parameter has a big impact on the flow structure and indeed the rate of change in mobility boundary layer width.
The impact of the velocity slip parameters \(\lambda_{1} \,\,{\text{and}}\,\,\,\lambda_{2}\) on the velocity profile is displayed in the Fig. 4a–c for the silver and copper nanofluids respectively. With rising values of slip parameters, a decline in the dimensionless velocity field is shown in the Fig. 4a–c. when the nanofluids speed lowers and also the velocity slip parameter improves. This is due to truly under slip effects, the movement of the stretched surface is different from the speed of the nanofluid flow nearer to the surface.
Figure 5a be drawn to concluded that influence of mass suction/injection factor \(V_{c}\) upon velocity distribution. It is observed that movement of nanofluid flow is decreases (velocity profile reduces) with uplifting value of the suction/injection parameter. Whereas from Fig. 5b it is noticed that acceleration of fluid flow improved as enhancing the quantity of \(V_{c}\) value.
Figure 6 illustrates deviations in the temperature field with various values of \(\xi\) respectively, while sustaining all other variables at the specified levels. Plot demonstrating that as climbs in the stretching sheet, the temperature velocity does as well. It results in the prediction that the boundary layer will expand as various values improve. It is clearly shows The energy layers increases with an increase in thermal jump.
The slip effect parameter upon temperature is represented in Fig. 7. In the presence of a magnetic field and a thermal jump, the fluid is flowing more freely and consistently as \(\lambda_{1}\) raises. Consequently, the profile is more consistent, as well as the heat transmission rate is reduced.
Figure 8 illustrates the change in temperature profiles induced by an increment in the value of a porosity component. A boost in the value of the porosity component results in a lowering impact on the temperature distribution. The thickness of the thermal boundary layer becomes thinner with the increase of the porosity parameter. Figure 9 explores how the temperature enhances while thermal radiation accumulates. Although radiation has the consequence of grows the rate at which a fluid's temperature is raised and consequently improving that temperature, the conclusion is subjectively consistent with the assumptions. Since higher radiation parameter values merely raise the surface heat transfer, rendering the fluid hotter.
An effect of solid volume fraction of the nanofluid on temperature distribution is portrayed in Fig. 10. The nanoparticles volume fraction has improved. since temperature conductance rises among increasing nanoparticle volume values. Physically, this tendency is in line with the premise that copper solid particles have a thermal conductivity that is larger than the silver nanofluids thermal conductivity. The optimal space for \(\delta\) against \(V_{c}\) as various Porosity \(K_{1}\) values is shown in Fig. 11a–c. Expression (15a) is really reduced to a cubic equation by assuming \(\lambda_{2} \, = \,0\), and with the right selection of \(\lambda_{1}\), and \(K_{1}\). From Fig. 11a–c, we observed that the flow solution domain is varied because of nature of the porosity value. An effects \(\lambda_{1}\) besides porosity parameter \(K_{1}\) upon solution space \(\delta\) relative mass suction/injection \(V_{c}\) is displayed in Fig. 12a–c. The dispersion curve is forced towards the slit by the appearance of a higher slip. The movement of a viscous liquid in a porous material with slip at a stretched border is very distinct beyond that of a shrinking border.
Figure 13 demonstrated the upshots of several physical characteristics on the shear stress spectrum. In such graph, the overall impacts on the porous solid can be seen at overlap locations for the shear stress spectra. At the wall's boundary, shear increases as the values of \(\lambda_{1} ,\,\lambda_{2}\) and porosity parameter rise.
Figure 14a–d demonstrate performance of the solution space \(\delta\) of against mass suction/injection parameter \(V_{c}\) for varying values of \(\lambda_{1}\) with fixed the value at \(M = 1\), \(\lambda_{2} = 0.01\) and \(0.5\). This figures shows the flow patterns of the fluid in the specified region. In fact, by choosing \(\lambda_{2} = 0,\) and \(M = 0\), Eq. (15a) reduces to a cubic equation and with the proper choice of \(\lambda_{1}\), \(\Gamma_{1} ,\,\Gamma_{2} ,\,\) and \(K_{1}\), and the results are reduced to those obtained by28,51,52.
Concluding remarks
In present study we conduct the theoretical study on laminar stream of viscous incompressible liquid through a penetrable stretching/shrinking sheet under the influence of thermal radiation as well as magnetohydrodynamic effects. Also carry through Navier slip conditions along with mass suction/injection parameter is considered. A similarity conversion is employed to convert the controlling PDEs for momentum and temperature to ODEs. These equations are solved analytically.\(Ag\)-blood and Cu-blood nanofluids are taken into consideration in the study. Plots are employed to examining an impacts of various temperature as well as velocity pattern properties. The comprehensive list of the study’s outputs are:
-
As the magnetic parameter M increases, the velocity profile and the width of the border layer of momentum decline and also noticed that copper-blood nanofluid have more velocity compared to that of silver-blood nanofluid.
-
Silver nanoparticles have a higher temperature than copper nanoparticles have been observed.
-
With an increment in the velocity slip parameter, the velocity profile reduces while the temperature profile climbs.
-
The Prandtl number has the result of diminishing the width of the thermal boundary layer.
-
The temperature of the nanoparticles also rises as the radiation parameter R grows.
-
The rate of heat is minimized by the velocity slip parameter.
Several preceding studies serve as the current study limiting points:
-
\(\begin{gathered} \lim \hfill \\ M \to 0,\,q_{r} \to 0,\, \hfill \\ T \to 0 \hfill \\ \end{gathered}\){our results \(\to\) Mahabaleshwar et al.34}
-
By setting \(\lambda_{2} \, = \,0\), Eq. (15a) reduces to results of Fang et al.51, Zhang et al.52and Yao et al.53.
Further extensions of the current work can be implemented incorporating new physical mechanisms, such as Newtonian or non-Newtonian fluid rheology.
Validation
The research reveals the effect of Navier’s slip and MHD on laminar boundary layer flow and heat transfer for an incompressible non-Newtonian nanofluid over a porous stretching/shrinking sheet with mass transpiration. In the absences of magnetic field \(M = 0\), and solid volume fraction \(\phi = 0\) leads to the results of Mahabaleshwar et al.34. In the absences of magnetic field \(M = 0\), \(Da^{ - 1} = 0\), and \(\phi = 0\) with absences of temperature leads to the results of Fang et al.51.
Data availability
Data that support the findings of this study are available from the corresponding author upon reasonable request.
Code availability
Codes that support the findings of this study are available from the corresponding author upon reasonable request.
Abbreviations
- A :
-
Constant (–)
- B :
-
Constant (–)
- \(B_{0}\) :
-
Magnetic field (Tesla)
- c :
-
Constant (–)
- \(C_{p}\) :
-
Specific heat (\({\text{JK}}^{ - 1} \,{\text{kg}}^{ - 1}\))
- d :
-
Stretching/shrinking parameter (–)
- f :
-
Velocity similarity function (–)
- \(K\) :
-
Permeability (\({\text{N}}/{\text{A}}^{2}\))
- \(K_{1}\) :
-
Inverse Darcy number (–)
- \(k^{*}\) :
-
Mean absorption coefficient (cm−1)
- M :
-
Hartmann factor (–)
- \(m,n\) :
-
Constants (–)
- \(N_{r}\) :
-
Radiation parameter (–)
- Pr :
-
Prandtl number (–)
- \(q\) :
-
Function of \(\left( {u,v} \right)\) (–)
- \(q_{t}\) :
-
Rate of change of \(q\) with respect to time (–)
- \(q_{r}\) :
-
Radiative heat flux (Wm−2)
- T :
-
Fluid temperature (K)
- T w :
-
Temperature of surface (K)
- \(T_{\infty }\) :
-
Ambient temperature (K)
- \(u,\,v\) :
-
X and y axes velocity coefficients (m s−1)
- \(V_{c}\) :
-
Mass suction/injection factor (–)
- \(x,y\) :
-
Horizontal and vertical axis (–)
- \(\left( {\rho C_{p} } \right)_{nf}\) :
-
Heat capacitance of nanofluid (\({\text{JK}}^{ - 1} \,{\text{kg}}^{ - 1}\))
- \(\left( {\rho C_{p} } \right)_{f}\) :
-
Heat capacitance of fluid (\({\text{JK}}^{ - 1} \,{\text{kg}}^{ - 1}\))
- \(\lambda_{1}\) :
-
First order slip (–)
- \(\lambda_{2}\) :
-
Second order slip (–)
- \(\alpha\) :
-
Constant (–)
- \(\Gamma_{1} ,\,\Gamma_{2} ,\,\Gamma_{3}\),\(\Gamma_{4}\) :
-
Coefficients (–)
- \(\xi\) :
-
Temperature jump constant (–)
- \(\xi_{1} ,\,\xi_{2}\) :
-
Slip conditions (–)
- \(\kappa_{nf}\) :
-
Thermal conductivity of nanofluid (\({\text{Wm}}^{{ - 1}} /{\text{K}}\))
- \(\mu_{nf}\) :
-
Dynamic viscosity of the nanofluid (Ns m−2)
- \(\mu_{f}\) :
-
Dynamic viscosity of the fluid (Ns m−2)
- \(\eta\) :
-
Similarity variable (–)
- \(\theta\) :
-
Temperature similarity variable (–)
- \(\nu_{nf}\) :
-
Kinematic viscosity of the nanofluid (\({\text{m}}^{2} \,{\text{s}}^{{ - 1}}\))
- \(\nu_{f}\) :
-
Kinematic viscosity of the fluid (\({\text{m}}^{2} \,{\text{s}}^{{ - 1}}\))
- \(\rho_{nf}\) :
-
Density of the nanofluid (kg m−3)
- \(\rho_{f}\) :
-
Fluid density (kg m−3)
- \(\sigma_{nf}\) :
-
Electrical conductivity of nanofluid (S/m)
- \(\sigma^{*}\) :
-
Stefan–Boltzmann constant (–)
- \(\phi\) :
-
Solid volume fraction (–)
- \(\chi\) :
-
Thermal diffusivity (m2 s−1)
- nf :
-
Nanofluid (–)
- ODEs:
-
Ordinary differential equations (–)
- PDEs:
-
Partial differential equations (–)
- MHD:
-
Magnetohydrodynamics (–)
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Conceptualization, U.S.M.; methodology, T.M.; validation, T.M. and S.M.S.; formal analysis, U.S.M.; investigation, T.M.; data curation, writing—original draft preparation, U.S.M. and M.H.; writing—review and editing, M.H.; visualization, T.M. and S.M.S; supervision, U.S.M. and M.H. All authors have read and agreed to the published version of the manuscript.
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Maranna, T., Sachhin, S.M., Mahabaleshwar, U.S. et al. Impact of Navier’s slip and MHD on laminar boundary layer flow with heat transfer for non-Newtonian nanofluid over a porous media. Sci Rep 13, 12634 (2023). https://doi.org/10.1038/s41598-023-39153-y
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DOI: https://doi.org/10.1038/s41598-023-39153-y
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