基于Omega涡识别方法的径流式水涡轮尾水管涡带特性OA北大核心CSTPCD
Characterization of vortex rope in draft tube of water turbine based on Omega vortex identification method
为了研究水涡轮尾水管的涡带特性与Omega涡识别方法对尾水管涡带的识别效果,对比了Q准则和λ2 准则以及Omega涡识别方法对尾水管涡带的识别效果,并基于Omega方法和降维的Omega方法分析了不同工况下尾水管的涡带特性.结果表明:对于径流式水涡轮,通过合理调整阈值,Q准则和λ2 准则以及Omega涡识别方法均能识别到清晰合理的尾水管涡结构,而Omega方法阈值选取区间较小且具有不敏感性;水涡轮尾水管在小流量工况时会出现较长的涡带,不利于机械的…查看全部>>
In order to study the vortex rope characteristics of the water turbine draft tube and the effec-tiveness of the Omega vortex identification method on the vortex rope of the draft tube,the Q and λ2 criteria and the Omega vortex identification method on the vortex rope of the draft tube were compared,and the vortex rope characteristics of the draft tube under different operating conditions based on the Omega method and the reduced dimensional Omgea method were…查看全部>>
蒋宇浩;汤玲迪
江苏大学国家水泵及系统工程技术研究中心,江苏 镇江 212013江苏大学国家水泵及系统工程技术研究中心,江苏 镇江 212013
农业工程
尾水管涡带涡识别数值模拟Omega方法拟涡能
draft tube cortex ropevortex identificationnumerical simulationOmega methodenstrophy
《排灌机械工程学报》 2024 (4)
射流入流条件下半开式径流水涡轮间隙流涡系掺混非定常行为
395-402,8
国家自然科学基金资助项目(52109105)
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