摘要
对某单级离心压缩机内的流动进行了数值模拟.计算结果表明,扩压器内压力最大的位置出现在蜗舌附近;当进口无预旋或预旋不大时,叶轮内流动参数的周向分布和一周叶片的受力情况是不对称的;在进口大预旋条件下,除蜗舌附近的周向位置外,叶轮内流动参数和主叶片受力趋于周向对称分布.
The flow in a single-stage centrifugal compressor is numerically simulated. The calculations indicate that, the maximum pressure occurs near the volute tongue in the diffuser, When there is no prewhirl or a little pre-whirl at the inlet, the circumferential distributions of flow parameters in the impeller and the forces exerted on the blades around are not symmetric, Under the condition of a large intake prewhirl, the flow parameters in the impeller and the forces exerted on the main blades tend to be axisymmetric except for the circumferential location near volute tongue.
出处
《动力工程》
CSCD
北大核心
2008年第3期400-403,共4页
Power Engineering
基金
国家自然科学基金资助项目(50676054)
关键词
能源与动力工程
离心压缩机
预旋
数值模拟
蜗舌
energy and power engineering
centrifugal compressor
pre-whirl
numerical simulation
volute tongue
