水煤浆管道输送流动性的数值模拟

doi:10.11799/ce201308098

Abstract

Abstract:

In order to study coal slurry flow characteristics in different channels, the application of the Euler Model of computational fluid dynamics (CFD) software carries on the numerical simulation for coal-water slurry flow in horizontal pipe and flexural pipe. It simulation analysis that, the coal water slurry at a stated speed, at a stated volume fraction as well as four kinds of coal grain diameter, the volume fraction distribution along the pipe section of the coal grain by respectively through the horizontal pipe, 90 ° and 150 °flexural pipe. The results show that, when the velocity of flow of coal slurry is 1.7m/s , the volume fraction is 45% and coal grain diameter is 0.5mm, in the horizontal pipe and flexural all appear obvious phase separation phenomenon, but when the coal grain diameter less than 0.25mm, in a horizontal pipe and flexural without appear phase separation phenomenon ultimately, it can completely satisfy the academic request of the coal transportation by pipe; for the same grain diameter of slurry, the fluidity in the straight pipe will be better.

Key words: Coal slurry, Volume fraction, the numerical simulation, pipe

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URL: http://www.coale.com.cn/EN/10.11799/ce201308098

http://www.coale.com.cn/EN/Y2013/V45/Is1/132

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Numerical simulation of pipeline transportation of coal slurry flow base on CFD

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