Abstract
This analysis has studied natural convection for the temperature-dependent viscosity of fluids inside porous media between two concentric spheres by numerically solving the Brinkman-Darcy-Forchheimer model, vorticity transport, and energy equations. Parameters included Rayleigh numbers (5.0 × 103-8.0 × 104) at radius ratios of 1.5, 2.0, and 3.5 with porosities of 0.4 and 0.9 for variable-viscosity fluids with Prandtl numbers (158, 405, and 720) when the Darcy number was changed at 0.1 and 0.001. The results showed that the mean Nusselt number varied with Rayleigh number, porosity, radius ratio, and variable viscosity but did not change with the Darcy number.
| Original language | English |
|---|---|
| Pages (from-to) | 1331-1350 |
| Number of pages | 20 |
| Journal | Numerical Heat Transfer; Part A: Applications |
| Volume | 68 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2015 Dec 17 |
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All Science Journal Classification (ASJC) codes
- Numerical Analysis
- Condensed Matter Physics
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Effects of temperature-dependent viscosity on natural convection in porous media. / Chou, Huann Ming; Wu, Horng-Wen; Lin, I. Hsuan; Yang, Wei Jen; Cheng, Ming Lin.
In: Numerical Heat Transfer; Part A: Applications, Vol. 68, No. 12, 17.12.2015, p. 1331-1350.Research output: Contribution to journal › Article
TY - JOUR
T1 - Effects of temperature-dependent viscosity on natural convection in porous media
AU - Chou, Huann Ming
AU - Wu, Horng-Wen
AU - Lin, I. Hsuan
AU - Yang, Wei Jen
AU - Cheng, Ming Lin
PY - 2015/12/17
Y1 - 2015/12/17
N2 - This analysis has studied natural convection for the temperature-dependent viscosity of fluids inside porous media between two concentric spheres by numerically solving the Brinkman-Darcy-Forchheimer model, vorticity transport, and energy equations. Parameters included Rayleigh numbers (5.0 × 103-8.0 × 104) at radius ratios of 1.5, 2.0, and 3.5 with porosities of 0.4 and 0.9 for variable-viscosity fluids with Prandtl numbers (158, 405, and 720) when the Darcy number was changed at 0.1 and 0.001. The results showed that the mean Nusselt number varied with Rayleigh number, porosity, radius ratio, and variable viscosity but did not change with the Darcy number.
AB - This analysis has studied natural convection for the temperature-dependent viscosity of fluids inside porous media between two concentric spheres by numerically solving the Brinkman-Darcy-Forchheimer model, vorticity transport, and energy equations. Parameters included Rayleigh numbers (5.0 × 103-8.0 × 104) at radius ratios of 1.5, 2.0, and 3.5 with porosities of 0.4 and 0.9 for variable-viscosity fluids with Prandtl numbers (158, 405, and 720) when the Darcy number was changed at 0.1 and 0.001. The results showed that the mean Nusselt number varied with Rayleigh number, porosity, radius ratio, and variable viscosity but did not change with the Darcy number.
UR - http://www.scopus.com/inward/record.url?scp=84937010737&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84937010737&partnerID=8YFLogxK
U2 - 10.1080/10407782.2015.1012864
DO - 10.1080/10407782.2015.1012864
M3 - Article
AN - SCOPUS:84937010737
VL - 68
SP - 1331
EP - 1350
JO - Numerical Heat Transfer; Part A: Applications
JF - Numerical Heat Transfer; Part A: Applications
SN - 1040-7782
IS - 12
ER -