Abstract
Computation of wall heat transfer in pipe-expansion flows with/without swirl motion is implemented using a new tow-layer (hybrid) turbulence model which is composed of a Reynolds stress model (RSM) and a Low-Reynolds-number (LRN) k - ε model. Comparisons of the predicted distributions of the Nusselt number along the wall with the available experimental results reveal that this two-layer turbulence model yields satisfactory performances in the three test cases. It is also shown that appreciable superiority of this two-layer turbulence model over a pure LRN k - ε model is observed when the investigated flow becomes more complex (anisotropic) such as the recirculating swirling flow case.
Original language | English |
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Pages (from-to) | 131-138 |
Number of pages | 8 |
Journal | American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD |
Volume | 357 |
Issue number | 2 |
Publication status | Published - 1998 |
All Science Journal Classification (ASJC) codes
- Mechanical Engineering
- Fluid Flow and Transfer Processes