石油与天然气化工2024，Vol.53Issue(4)：8-18,11.DOI:10.3969/j.issn.1007-3426.2024.04.002
旋流后置型超声速分离器激波控制方法数值模拟
Numerical simulation of shock wave control method of rear-swirl type supersonic separator
摘要
Abstract
Objective Supersonic separation is a new gas purification and fuel gas processing technology based on contraction-expansion nozzle.The cyclone in the post-swirl supersonic separator is usually set in front of the diffuser section,which is easy to induce the positive shock wave and destroy the low temperature environment inside the separator.Moreover,the shock wave is difficult to control.Therefore,this study intends to reduce the impact of shock waves by optimizing the structure.Methods Firstly,based on the principles of thermodynamics and aerodynamics,a shock wave control theory for a rear-swirl supersonic separator was proposed.Secondly,according to the theory,a trans-swirl structure which could control shock waves was designed,and a universal design formula for the structure was established.Thirdly,through numerical simulation,the effects of three important structural parameters on the shock waves control were analyzed,namely,the dip angle of the trans-swirl structure,the length of the gradually expansion section and the twist angle of the cyclone blade.Results The separator had the best performance when the dip angle of the trans-swirl structure was set to 3.3°,the length of the gradual expansion section was set to 107 mm,and the blade torsion angle of the cyclone was set to 120°.Conclusions Compared with the traditional cyclone post-separator,the addition of the trans-swirl structure can ensure that the fluid flow area continues to increase in the gradual expansion section,thereby achieving effective control of shock waves and improving the condensation and separation efficiency.关键词
超声速流动/激波控制/纯化/旋流后置/数值模拟/跨旋流结构Key words
supersonic flow/shock wave control/purification/rear-swirl/numerical simulation/trans-swirl structure引用本文复制引用
蒋文明,韩晨玉,门惠云,刘杨,周媛媛..旋流后置型超声速分离器激波控制方法数值模拟[J].石油与天然气化工,2024,53(4):8-18,11.基金项目
国家自然科学基金"基于超音速膨胀过程的天然气脱CO2过程机理研究"(51406240) （51406240）
山东省自然科学基金"超音速分离管能量分配特性与旋流对相变凝结过程的影响机理"(ZR2019MEE011) （ZR2019MEE011）
青岛市科技计划项目"海上电絮凝污水净化装置工程设计方法及现场试验研究"(19-6-1-87-nsh) （19-6-1-87-nsh）
