| Autor: |
Atul Kohli, Danesh K. Tafti, Jonathan B. Cowan |
| Rok vydání: |
2010 |
| Předmět: |
|
| Zdroj: |
Volume 4: Heat Transfer, Parts A and B. |
| DOI: |
10.1115/gt2010-22362 |
| Popis: |
This paper investigates the erosion and deposition characteristics of sand particles in a short pin fin array. The simulation is carried out using a LES solver for the fluid (carrier) phase and a Langragian approach for the particle (dispersed) phase. Three particles Stokes numbers (0.78, 3.1 and 19.5) are explored as well as three non-dimensional particle softening temperatures (θST = 0, 0.37 and 0.67). The deposition is shown to increase with decreasing particle Stokes number from 0.005% for Stp = 19.5 to 13.4% for Stp = 0.78 and is almost completely concentrated on the channel walls (99.6%–100%). The erosion potential is shown to increase with Stokes number and is highest on the pin faces. The deposition increases with decreasing softening temperature from 13.4% at θST = 0.67 to 79% for θST = 0. Overall, the channel walls of the array show the greatest potential for deposition. On the other hand, the pin faces show the greatest potential for erosion.Copyright © 2010 by ASME |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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