Abstract
In this study, a second law comparison of irreversibility is used to determine the optimum duct geometry which minimizes losses for a range of laminar flows with constant wall heat flux condition. Water as a working fluid is considered. The duct geometries used are rhombic with various angle of bevel and circular. Hydraulic diameters are used for the different geometries. The rhombic geometry with the angle of 90°C, when the factional contributions of entropy generation become important is the best. Also power required to overcome fluid friction in the mentioned duct is smallest.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 327-333 |
| Number of pages | 7 |
| Journal | Journal of Applied Sciences |
| Volume | 9 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2009 |
| Externally published | Yes |
Keywords
- Constant wall heat flux
- Convection
- Irreversibilities
- Laminar flow
- Rhombic