Computational modeling of heat transfer in magneto‐non‐Newtonian material in a circular tube with viscous and Joule heating

Mahanthesh, B.; Al‐Kouz, Wael; Swain, Kharabela; Rout, Prasanna Kumar

doi:10.1002/htj.22199

Cited by 12 publications

(6 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In case B, Gr Q = 3 5 × 10 11 and Gr He = 0, and the mean value of the local Grashof number Gr loc at outlet equals to 1 75 × 10 9 . In Figure 3(b), a slight unsteady flow also occurs, and the unsteady reverse flow has a small amplitude oscillation.…”

Section: Effects Of Helium Cooling and Neutron Heat Sourcementioning

confidence: 97%

“…As the heat source is an approximately exponential distribution [4], Vetcha et al [8] proposed an approximate solution for MHD mixed convection under an exponential heat source. Several articles [9][10][11][12] have examined the impact of magnetic fields on fluid flow and heat transfer when considering heat sources and Joule heating. However, studies about buoyancy effects in the complex DCLL blanket are rare at present, while buoyancy plays a key role in the flow of a blanket.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Unsteady Mixed Convection Flows in a Rectangular Duct and Dynamical Behaviors of Flow Channel Insert

Liu,

Wang,

et al. 2024

International Journal of Energy Research

View full text Add to dashboard Cite

Buoyancy-assisted upward MHD flows and dynamical behaviors of flow channel insert (FCI) in the dual-coolant lead-lithium (DCLL) blanket are studied numerically. Based on our internally developed and validated solver, the dynamical behaviors of magneto-thermo-fluid-structure coupled multiphysical field are investigated. A large amplitude, low frequency, and quasiperiodic unsteady reverse flow at high Re (31000), high Gr (3.5×1011), and moderate magnetic field (0.7~1.7T) is found in the DCLL blanket. This intricate phenomenon has been discovered for the first time, representing a combination of separate experimental results from Melnikov et al. (2016) and Khanal and Lei (2012). In our study of this large amplitude, low frequency, and quasiperiodic unsteady reverse flows, the importance of the cold helium gas to the instability of fluid flow in the bulk region and the thermal conductivity of the FCI to convection structure and instability are first found and recognized. Additionally, we take into account the effects of the temperature field and flow field on structural deformation and mechanical behavior of FCI, and we have discovered several intriguing phenomena, such as (1) the stability of fluid flow in the bulk region depends on the strength of the heat source, the magnitude of the magnetic field, and thermal conductivity of FCI; (2) the instability and periodicity of the fluid flow are primarily related to the unsteady reverse flow, which rises up and falls down periodically in the bulk region; (3) the physical mechanism of unsteady flow influenced by reverse flow, pressure drop, and Lorentz force has been concluded. It has been discovered that the breakdown of a reverse flow vortex causes a rapid reduction in pressure drop. (4) To avoid this phenomenon in engineering, a phase map of unsteady and steady flows in the DCLL blanket has been created. (5) The quasiperiodic characteristics of solid (flow channel insert) affected by flow are found and analyzed.

show abstract

Section: Effects Of Helium Cooling and Neutron Heat Sourcementioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Unsteady Mixed Convection Flows in a Rectangular Duct and Dynamical Behaviors of Flow Channel Insert

Liu,

Wang,

et al. 2024

International Journal of Energy Research

View full text Add to dashboard Cite

show abstract

“…Thereafter Crane 2 extended the work of Sakiadis. Many authors [3][4][5][6] studied several aspects of the flow of fluid over a stretching sheet.…”

Section: Introductionmentioning

confidence: 99%

Heat and mass transfer of water‐based copper and alumina hybrid nanofluid over a stretching sheet

Mishra

Swain²,

Dalai

2022

Heat Trans

Self Cite

View full text Add to dashboard Cite

Hybrid nanofluids (HNFs) are vital in engineering and industrial applications due to significant effective thermal conductivity as compared with regular fluid and nanofluid (NF). The HNF is a process of the conglomeration of two or more nanoparticles of different thermophysical properties to affect the thermal transport characteristics of base fluid, particularly in gearing up heat switch charge. Further, the impact of HNF combined with stretching and squeezing of bounding surface has direct application in thinning/thickening of polymeric sheets in the chemical industry. The current study analyzes the flow of HNF over a stretching sheet under the influence of chemical reaction as well as suction/injection. We have considered water ( normalH 2 O ) $({{\rm{H}}}_{2}{\rm{O}})$ as the base fluid and copper ( Cu ) $(\mathrm{Cu})$, and aluminum oxide ( Al 2 normalO 3 ) $({\mathrm{Al}}_{2}{{\rm{O}}}_{3})$ as nanoparticles. The consequences of the magnetic field, viscous dissipation, and Joule heating are also to be investigated. The resulting partial differential equations are transformed into nonlinear ordinary differential equations using suitable similarity transformations. The numerical solutions to governing equations are obtained with the help of MATLAB software using the bvp4c solver. The important finding is: the rate of heat transfer of HNF is higher than that of NF as well as base fluid. Moreover, contributions of higher Eckert number and radiation parameter are to increase the temperature in the flow domain, whereas the Prandtl number reduces it. It is further noticed that heavier species as well as viscous dissipation decline the level of concentration across the flow field.

show abstract

“…Further, MHD natural convective flow, past an infinite vertical porous plate with thermal radiation and Hall current, was considered by Ramana Murthy et al 13 Rajput and Kumar 14 have investigated radiation effects on MHD flow past an oscillating inclined plate with heat and mass transfer. Unsteady MHD flows of a viscoelastic fluid along a vertical porous surface with fluctuating temperature and concentration have been studied by Mohanty et al 15 Several authors [16][17][18][19][20][21][22] studied MHD flow of viscous and viscoelastic fluid.…”

Section: Introductionmentioning

confidence: 99%

Study of an unsteady fluctuative MHD flow of elasticoviscous liquid past a vertical porous plate

Muduly

Rath

Parida³

et al. 2022

Heat Trans

Self Cite

View full text Add to dashboard Cite

Most flows which occur in nature/practical applications are fluctuating. The fluctuating motions superimposed on the main motion are complex. Further, the unsteadiness of the flow is an added reality to applications in various fields. The free convection flow of an electrically conducting fluid past different types of vertical bodies subjected to a magnetic field is studied because of its wide range of applications in astrophysics, geophysics, aerodynamics, electromagnetic pumps, the flow of liquid metals, and so forth. In the present analysis, an attempt has been made to study the thermal radiation effect on the unsteady magnetohydrodynamic flow of an incompressible elasticoviscous liquid (Walters‐B' fluid model) along an infinite hot vertical permeable surface embedded in a porous medium with heat source and chemical reaction. The governing equations of motion, energy, and concentration are solved by an approximate analytical method, that is, the successive perturbation technique and numerical method (Runge–Kutta with shooting). The solution procedure rests upon the basic assumption that the unsteady boundary layer involves a steady basic flow superimposed on an unsteady flow. The most striking outcome is that the combined effect of oscillation outflow, the elasticity of the fluid, and thermal as well as mass buoyancy overrides the resistive electromagnetic force and suction at the plate to enhance the velocity so that high values of magnetic strength are not desired. Further, a higher value of the heat source parameter accelerates the momentum diffusion resulting in the escalation of the velocity field. Fall of concentration is relatively faster in cases of heavier species as well as destructive reactions. The heat transfer coefficient assumes positive values indicating the heat flows from the plate to the fluid (cooling of the bounding surface and heating of the fluid). These observations may have industrial (design of heat exchanges) and therapeutic bearings.

show abstract

Computational modeling of heat transfer in magneto‐non‐Newtonian material in a circular tube with viscous and Joule heating

Abstract: Numerous industrial and engineering systems, like, heat exchangers, chemical action reactors, geothermic systems, geological setups, and many others, involve convective heat transfer through a porous medium.

Cited by 12 publications

References 25 publications

Unsteady Mixed Convection Flows in a Rectangular Duct and Dynamical Behaviors of Flow Channel Insert

Unsteady Mixed Convection Flows in a Rectangular Duct and Dynamical Behaviors of Flow Channel Insert

Heat and mass transfer of water‐based copper and alumina hybrid nanofluid over a stretching sheet

Study of an unsteady fluctuative MHD flow of elasticoviscous liquid past a vertical porous plate

Contact Info

Product

Resources

About