NUMERICAL SIMULATION OF EFFECT OF WALL ROUGHNESS ON PARTICLE DEPOSITION IN FCC FLUE GAS TURBINE

Petroleum Processing and Petrochemicals ›› 2016, Vol. 47 ›› Issue (4): 42-48.

NUMERICAL SIMULATION OF EFFECT OF WALL ROUGHNESS ON PARTICLE DEPOSITION IN FCC FLUE GAS TURBINE

Received:2015-09-09 Revised:2015-11-25 Online:2016-04-12 Published:2016-04-19

Abstract

Abstract:

The standard k-ε model and discrete particle model (DPM) were used to simulate the process of collision and deposition in FCC flue gas turbine. We mainly investigate the effects of surface roughness on particles deposition. The suction surface of blade has a significant deposition than pressure surface. The area near the inlet of blade on the suction surface deposit a lot, as well as the area near the casing and hub on the pressure surface. Compared with the coating surface without fouling, the wall roughness alleviates deposition of pressure surface when it is between 100 μm and 500 μm, but aggravates the deposition of suction surface.

Key words: flue gas turbine, wall roughness, catalyst, deposition, numerical simulation

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NUMERICAL SIMULATION OF EFFECT OF WALL ROUGHNESS ON PARTICLE DEPOSITION IN FCC FLUE GAS TURBINE

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