【摘要】 水泵水轮机组运行工况多、工况转换频繁、过渡过程剧烈,分析水泵水轮机内流态对研究机组安全稳定性有重要意义。借用虚拟现实显示(VR)技术能实现直观、形象、无死角的流态展示。通过CFD对某水泵水轮机的多个典型工况进行模拟,用VR展示了各工况独特的流态,总结了流态特征,发现一些未被报道的流态,加深了对水泵水轮机流态的认识。作为水泵水轮机流场特性VR分析的尝试,证明VR能弥补传统流态展示后处理方式的不足,有很好应用前景。更多还原

【Abstract】 The transient processes of pump-turbine units are violent and dangerous during the frequent transitions between many operating conditions. Investigating the flow patterns in pump-turbines is important for revealing the instability mechanism and guaranteeing the operating safety. The newly developed virtual reality(VR) technology is a powerful tool for showing flow fields because it can realize an intuitive and vivid display without blind angles. In this paper, computational fluid dynamics(CFD) technology is used to simulate the flow patterns of a pump-turbine in five typical operating conditions and the VR technology is used to investigate flow patterns. The flow characteristics in the guide-vanes, runner, and draft-tube are summarized and some unreported vortices are found, which is valuable for promoting understanding. This successful attempt proves that the VR method can make up for the shortcomings of traditional CFD post-processing in displaying flow patterns and has broad application prospects.更多还原