文献类型： 会议论文

第一作者： Binbin Cheng

作者： Binbin Cheng ¹ ; Daisaku Sakaguchi ² ;

作者机构： 1.Fishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China

2.Graduate School of Engineering, Nagasaki University, Nagasaki, Japan

关键词： blades;centrifuges;compressors;engines;fuel systems;impellers;mass transfer;numerical analysis;optimisation

会议名称： International Conference on Control, Automation and Robotics

主办单位：

页码： 702-707

摘要： A wider operating range as well as higher performance are necessary for turbocharger compressors so as to meet demands of modern engines. Recirculation flow type casing treatment is one of the most effective devices that have been widely investigated. Recirculating flow type casing can extend the operating range of the compressor to the low flow rate region by sucking the reverse flow at shroud wall side at small flow rate condition. The advantages of the recirculation flow type casing treatment are well known as (1) a low energy fluid is sucked out from the down-let slot located near a throat of a rotating impeller (2) flow incidence is reduced because that recirculation flow merges with incoming main flow upstream of the impeller inlet. However, increase in friction loss and mixing loss resulted from the casing treatment can be considered as the disadvantages of the casing treatment. In the present study, an application of three-dimensional guide vane with 14 blades inside the casing treatment is presented to overcome the disadvantages of the casing treatment. And it shows improvement compared with the guide vanes with 7 blades. The shape of the guide vanes were optimized by using a surrogate model assisted optimization code. Numerical results showed that the optimized guide vanes hold a possibility to improve off-design performance by reducing the excessive pre-whirl at the compressor inlet.

分类号： tp2