符杰;宋文武;曾永忠;
FU Jie,SONG Wen-wu,ZENG Yong-zhong(Xihua University,Chengdu 610039,China)

• 1:西华大学

摘要(Abstract)：

针对我国轴流泵效率普遍偏低的情况,结合轴流泵叶轮轮缘、轮毂处的边界层及间隙流的影响,在传统的升力法模型中引入修正系数,对传统的升力法公式进行改进,得到改进的升力法,应用两种模型完成叶轮叶片的设计,并利用NUMECA软件进行数值模拟,得到采用改进的升力法设计的叶轮叶片表面及轮毂、轮缘处的速度及压力分布均较传统升力法设计的好,设计工况点的效率比采用传统升力法设计的叶轮高2.5%。
The efficiency of axial pump is on the low side in our country at large.Combined the effect of the boundary layer in the hub and rim of axial pump impeller and the interstitial fluid of axial pump impeller,compensation factor to the conventional lift-law model was introduced,the improvement for the conventional lift-law formula was putted up,the improvement of lift-law model was gained,these models was applied for the designing of the impeller,and the numerical simulation was carried through by using NUMECA software.It was obtained satisfactory velocity-pressure distribution for the hub,rim and surface of the improvement on lift-law designed impeller,improvement effect prominence,enhanced 2.5% the design power efficiency of axial pump.

关键词(KeyWords)： 轴流泵;改进升力法;叶轮;数值模拟;性能预测
axial pump;improvement of lift-law;impeller;numerical simulation;performance prediction

Abstract:

Keywords:

基金项目(Foundation): 四川省教育厅重点项目资助(2006A089);; 四川省流体机械及工程重点学科项目基金资助(SBZD07047)

作者(Authors): 符杰;宋文武;曾永忠;
FU Jie,SONG Wen-wu,ZENG Yong-zhong(Xihua University,Chengdu 610039,China)

参考文献(References)：

• [1]汤方平,王国强,刘超,等.高比转数轴流泵水力模型设计与紊流数值分析[J].机械工程学报,2005,41(1):119-123.
• [2]陈次昌,杨昌明,王金诺,等.轴流泵端壁区域流动三维粘性数值计算[J].工程热物理学报,2003,24(4):603-605.
• [3]王德军,周惠忠,黄志勇,等.对旋式轴流泵全流道三维定常紊流场的数值模拟[J].清华大学学报(自然科学版),2003,43(10):1339-1342.
• [4]杨昌明,陈次昌,王金诺,等.轴流泵端壁间隙流动特性的数值研究[J].机械工程学报,2003,39(9):49-51.
• [5]宋文武,谭光仪,王邦安,等.蜗壳轴流泵的研究与产品开发[J].机械工程学报,1999,35(4):70-72,84.
• [6]W u Y L,Oba R,Ikohagi T.Computation on turbu lentd ilute liqu id-partic le flows through a centrifugal impel-ler[J].Japanese JMu ltiphase F low,1994,8(2):118-125.
• [7]梁开洪,张克危,许丽.轴流泵叶顶间隙流动的计算流体动力分析[J].华中科技大学学报(自然科学版),2004,32(9):36-38.
• [8]李龙,王泽.粗糙度对轴流泵性能影响的数值模拟研究[J].农业工程学报,2004,20(1):132-135.
• [9]李文广,苏发章,黎义斌,等.轴流泵的叶片设计理论与应用研究现状[J].兰州理工大学学报,2004,30(5):59-63.
• [10]李文广,苏发章,黎义斌,等.轴流泵叶片设计中叶轮出口液体速度矩分布[J].兰州理工大学学报,2005,31(3):54-58.