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JSIR Vol.70 [2011] >
JSIR Vol.70(02) [February 2011] >
| Title: | Effect of geometry on flow structure and pressure drop in pneumatic conveying of solids along horizontal ducts |
| Authors: | Laín, S
Sommerfeld, M |
| Keywords: | Gas-solid flow
Inter-particle collisions
Pneumatic conveying
Turbulence
Wall roughness |
| Issue Date: | Feb-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | This study presents further developments in Euler/Lagrange approach to calculate confined particle-laden flows in pneumatic conveying lines. Special emphasis is placed on influence of particle-wall collisions and wall roughness as well as inter particle collisions with possible agglomeration on developing two-phase flow structure and resulting process parameters. Model sand numerical method were validated based on pressure drop measured along a 6 m horizontal channel, and agreement was found to be excellent for different particles sizes, mass loading and wall roughness. In a horizontal pipe flow, due to wall roughness induced focussing of particle trajectories towards the core of pipe, a secondary flow in pipe cross-section develops. Additional pressure drop due to particles in pipe flow was higher than that in channel due to different wall collision behaviour. |
| Page(s): | 129-134 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1084 (Online); 0022-4456 (Print) |
| Source: | JSIR Vol.70(02) [February 2011]
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