Abstract
Forced convection heat transfer of ethylene glycol based nanofluid with Fe3O4 inside a porous medium is studied using the electric field. The control volume based finite element method (CVFEM) is selected for numerical simulation. The impact of the radiation parameter (Rd), the supplied voltage (Δφ), the volume fraction of nanofluid (ϕ), the Darcy number (Da), and the Reynolds number (Re) on nanofluid treatment is demonstrated. Results prove that thermal radiation increases the temperature gradient near the positive electrode. Distortion of isotherms increases with the enhance of the Darcy number and the Coulomb force.
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Abbreviations
- E x,E y :
-
components of electric field
- D e :
-
diffusion number
- S E :
-
Lorentz force number
- u, v :
-
components of velocity
- q :
-
electric charge density
- J :
-
electric current density
- p :
-
pressure
- K :
-
permeability of porous media
- T :
-
temperature
- T C :
-
Curie temperature
- F E :
-
electric force
- Re :
-
Reynolds number
- Da :
-
Darcy number
- R d :
-
radiation parameter
- Pr E :
-
electric Prandtl number
- N E :
-
electric field number
- D :
-
charge diffusion coefficient
- V :
-
velocity
- k :
-
thermal conductivity
- C p :
-
heat capacity
- qr:
-
radiation heat flux
- m :
-
shape factor
- ϕ :
-
volume fraction
- σ :
-
electric conductivity
- φ :
-
potential electric field
- ε :
-
dielectric permittivity
- ρ :
-
density
- μ :
-
dynamic viscosity
- β r :
-
radiation coefficient
- σ e :
-
stefan Boltzmann coefficient
- s:
-
solid particles
- f:
-
base fluid
- c:
-
cold
- nf:
-
nanofluid
- h:
-
hot
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Sheikholeslami, M. Investigation of Coulomb force effects on ethylene glycol based nanofluid laminar flow in a porous enclosure. Appl. Math. Mech.-Engl. Ed. 39, 1341–1352 (2018). https://doi.org/10.1007/s10483-018-2366-9
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DOI: https://doi.org/10.1007/s10483-018-2366-9
Key words
- control volume based finite element method (CVFEM)
- porous medium
- Coulomb force
- nanofluid
- thermal radiation
- electric field