Abstract
The influence of variable viscosity of temperature-dependent liquid on laminar flow heat transfer and friction factor in plain fins and serrated fins was investigated. CFD simulation was carried out over a range of Reynolds numbers from 20 to 220 under different temperature conditions of separating boards, then the Colburn factor j and friction factor f were calculated from the simulation data. The formulas to amend the Colburn factor j and friction factor f of plain fins were advanced. The results show that the effects of variable viscosity on surface performance of plain fins are more significant than those of serrated fins. The results of this research can be used to guide design of the plate-fin heat exchangers with large temperature difference and high viscosity liquid.
| Original language | English |
|---|---|
| Pages (from-to) | 20-23 |
| Number of pages | 4 |
| Journal | Huaxue Gongcheng/Chemical Engineering (China) |
| Volume | 36 |
| Issue number | 4 |
| State | Published - Apr 2008 |
Keywords
- Numerical simulation
- Plate-fin heat exchanger
- Surface performance
- Variable viscosity