Natural Convection in Wavy-Wall Cavities Filled with Power-Law Fluid
| Main Authors: | Cha'o-Kuang Chen, Ching-Chang Cho |
|---|---|
| Format: | Article |
| Bahasa: | eng |
| Terbitan: |
, 2014
|
| Online Access: |
https://zenodo.org/record/2659885 |
Daftar Isi:
- This paper investigates the natural convection heat transfer performance in a complex-wavy-wall cavity filled with power-law fluid. In performing the simulations, the continuity, Cauchy momentum and energy equations are solved subject to the Boussinesq approximation using a finite volume method. The simulations focus specifically on the effects of the flow behavior index in the power-law model and the Rayleigh number on the flow streamlines, isothermal contours and mean Nusselt number within the cavity. The results show that pseudoplastic fluids have a better heat transfer performance than Newtonian or dilatant fluids. Moreover, it is shown that for Rayleigh numbers greater than Ra=103, the mean Nusselt number has a significantly increase as the flow behavior index is decreased.