摘要
基于S-A湍流模型和N-S方程,采用Fluent软件对高速等螺距诱导轮内部流场进行全三维湍流数值模拟,获得诱导轮内部的静压分布、速度分布及内部流线图。分析诱导轮压力面和吸力面存在压差的原因及进口低压区对诱导轮汽蚀性能的影响,得到高速诱导轮内部流场的主要特征,发现诱导轮中最易发生汽蚀的部位为吸力面的进口附近。模拟结果为诱导轮的改进设计提供了理论依据。
Using the k-ε turbulence model and the Reynolds-Averaged Navier-Storkes equations,the three-dimensional turbulent flow fields in equal-pitch high-speed inducer are analyzed numerically at design point by the Fluent Software.The velocity distribution,static pressure distribution and the internal flow streamline in flow field of high-speed inducer is obtained.The pressure difference between the pressure surface and suction surface,the effect of low pressure area for the cavitation performance of inducer and the site of cavitation are disclosed.With the rapidly growing of pressure,it ensures the impeller cavitation occurred after the inducer.The simulation result provides the theoretical foundation for the improved design of inducer.
出处
《浙江理工大学学报（自然科学版）》
2010年第3期412-416,共5页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
基金
国家自然科学基金(20706049
50976105)
浙江省重大科技攻关计划(2008C11056)
浙江理工大学科研启动基金资助项目(0603284-Y)
关键词
高速
诱导轮
等螺距
数值计算
汽蚀
high speed
inducer
equal-pitch
numerical simulation
cavitation
作者简介
赵瑞（1984-），女，河南开封人，硕士研究生，主要从事流体机械的研究。
