Table 11 Variation in physical properties with the porosity of medium
From: Natural convection heat transfer of nanofluids along a vertical plate embedded in porous medium
Properties | Porosity ε | |||
|---|---|---|---|---|
0.5 | 0.55 | 0.6 | 0.72 | |
K | 7.4 × 10−10 | 1.2 × 10−9 | 2 × 10−9 | 7 × 10−9 |
k eff | 1.7497 | 1.59137 | 1.4592 | 1.2167 |
αeff (10−7) | 3.7534 | 3.4135 | 3.1301 | 2.6100 |
Preff | 2.2013 | 2.4204 | 2.6396 | 3.1656 |
RaKeff | 10.7041 | 17.5821 | 28.8800 | 101.7845 |
σ | 0.8689 | 0.8820 | 0.8951 | 0.9266 |