The Diffusion Behavier Analysis Caused by High Pressure Natural Gas Leak in Enclosure with and without Ventilation System (I)

Abstract

-The basic understanding of gas diffusion and technology to predict the diffusion phenomena are needed to prepare against a disaster of leakage of natural gas and to design better consistent and reliable gas supply system in enclosure. The experimental results of British Gas Technology Co. are used in present study as a reference of theoretical study using CFD. The present results of 2D CFD analysis for mass flow rate of nozzle release show good agreement with experimental results within 2.6 % error. 3D CFD analysis for the characteristics of natural gas diffusion in enclosure with various ventilation patterns also gives reasonable agreement with experimental results.

Measurement of expansion deformation at an expansion joint in a heating network based on information from distributed temperature sensing

“…In order to avoid these hazards, many scholars have carried out research on detection techniques. Ha et al used the method of negative pressure wave detection to determine the degree and location of leakage by picking up the gradient characteristics and the time difference of rate of change in pressure at both ends of the pipeline [2]. Juliano et al used an acoustic method to detect leaks in pipes [3].…”

Computational Flow Analysis of Chemical Terror Gas and Its Alternative Gases

“…테러에 대비한 가스 유동에 대한 국내 연구는 많이 이루어 지지 않았으나 사고 사례 분석 (1)(2)(3) 및 실내에서의 가스 확산에 관한 연구는 비교적 많이 이루어지고 있다 (4)(5)(6)(7)…”