Evaluation of the steady-state coal permeability experiments: a numerical simulation study
by Jie Zang; Kai Wang
International Journal of Mining and Mineral Engineering (IJMME), Vol. 9, No. 2, 2018

Abstract: By using the numerical simulator developed in our previous work, this paper conducted four simulation cases on the steady-state coal permeability experiments. One case is not backpressure-regulated and the other three are backpressure-regulated with different constant differential pressures between the upstream and the downstream end. The simulation results indicate that the backpressure-regulated steady-state method is superior to the non-backpressure-regulated in terms of the measurement accuracy. The results also indicate that a small differential pressure may be preferable to a higher value for the backpressure-regulated method in order to obtain more accurate permeability measurements. These conclusions may be meaningful for future coal permeability measurements with the steady-state method.

Online publication date: Wed, 23-May-2018

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