基于旋流的天然气超声速喷管分离特性  

Separation Characteristics of Supersonic Swirling Flow Nozzle for Natural Gas

作　　者：文闯[1] 曹学文[1] 张静[1] 杨燕[1] 张文敬[1] 

机构地区：[1]中国石油大学储运与建筑工程学院,山东青岛266555

出　　处：《石油学报（石油加工）》2011年第1期150-154,共5页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家高技术研究发展计划"863"计划资助(2007AA09Z301);国家科技重大专项(2008ZX05017-004)资助

摘　　要：采用数值模拟方法研究来流为旋流的拉伐尔喷管内的流场,考察了喷管的收缩比、收缩半角、喉部圆柱段长度和扩张半角对天然气超声速喷管旋流分离性能的影响。数值计算结果表明,增加喷管收缩比和收缩半角可以提高喷管旋流分离性能。喷管喉部圆柱段长度对喷管旋流分离性能影响较小。当喷管扩张半角小于2°时,喷管旋流分离性能较差;扩张半角在2-6°时,喷管旋流分离性能较好;继续增加扩张半角,喷管旋流分离性能下降。The flow field of the Laval nozzle was numerically simulated,where the upstream of the nozzle was of swirling flow.The effects of nozzle contraction ratio,convergent half-angle,length of throat cylinder and divergent half-angle on the separation performance of supersonic swirling flow nozzle were investigated.The numerical results showed that good separation performance of the nozzle was obtained with increases of the nozzle contraction ratio and convergent half-angle.The influence of the length of throat cylinder on the separation performance of supersonic swirling flow nozzle was very small.When the divergent half-angle was at the range of 2° to 6°,the separation performance was nearly perfect with little change.When the divergent half-angle was less than 2° or more than 6°,the separation performance declined.

关 键 词：旋流 超声速 拉伐尔喷管 分离性能 数值模拟 

分 类 号：TE868[石油与天然气工程—油气储运工程]