CAJ | 학술논문

基于一维混合模型研究天然气管道投产过程中气体的混合规律，利用Taylor、Taylor-CW、G ．R ．I 3种不同方法分别计算出气体扩散系数及投产过程中形成的天然气-氮气混气段长度，分析了管道置换过程中影响混气长度的主要因素，包括管长、管径及流速。由Taylor-CW方法计算出的结果与现场数据最为接近，用该方法验证国内3条已投产管道所得的相对误差分别为39．7％、23．4％、22．0％。
기우일유혼합모형연구천연기관도투산과정중기체적혼합규률，이용Taylor、Taylor-CW、G ．R ．I 3충불동방법분별계산출기체확산계수급투산과정중형성적천연기-담기혼기단장도，분석료관도치환과정중영향혼기장도적주요인소，포괄관장、관경급류속。유Taylor-CW방법계산출적결과여현장수거최위접근，용해방법험증국내3조이투산관도소득적상대오차분별위39．7％、23．4％、22．0％。
The gas diffusion coefficient and therefore gas-mixing section length was studied by using one-dimension mathematical model in combination with three different methods for calculating gas diffusion coefficient (Taylor ,Taylor-CW and G .R .I) .In addition ,the predominant factors in affecting the gas-mixing section length were also investigated ,including pipeline length ,diameter and velocity of the flow .And the comparison between the calculation results and field data show that Taylor-CW method can reflect the field practice better .The relative errors of the results for three domestic pipelines are 39.7% ,23 .4% and 22 .0% ,respectively .