An Efficient Approach to Calculate the Amount of Released Gas in Branched Networks Considering Minor Loss Effects

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university

Abstract

In this paper, high velocity compressible flows in gas networks have been simulated in order to calculate the amount of released gas. The exact determination of the released gas in the networks needs to calculate the minor losses along with the existing compressibility effects. First, a new definition based on the physics of high velocity compressible flows has been proposed to calculate the minor losses. Then, different types of the three-dimensional flow through T-type junctions are simulated using Fluent Package. Based on the obtained results, an appropriate relation is proposed to calculate minor loss coefficients as function of junction inlet Mach number. The proposed relation has much simpler form than those proposed by the others and it can be more easily applied to develop the gas networks analysis softwares. Finally, the amount of released gas through a branched network is calculated using a new algorithm based on our proposed minor loss equation. The very good agreement between the numerical code and Fluent results shows the accuracy and efficiency of the proposed minor loss relation and applied numerical algorithm.

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References

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Journal of Solid and Fluid Mechanics
Volume 5, Issue 2 - Serial Number 2
July and August 2015
Pages 271-284

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