CAJ | 학술논문

基于全三维雷诺时均N-S方程和标准k-ε两方程湍流模型，采用多重参考系模型（MRF）和壁面函数法，利用FLUENT软件对应用于中比转速冲压焊接多级离心泵的扭曲式叶轮、圆柱式叶轮和堵塞式叶轮进行内部流场的数值模拟，得到了三种叶轮的内部流动特征。结果表明：扭曲式叶轮具有抗气蚀性能强，无明显的分流层现象，较好的水力性能等特点，在三种叶片中最适宜采用扭曲式叶片，为中比转速冲压焊接多级泵的叶轮设计选型提供了依据。
기우전삼유뢰낙시균N-S방정화표준k-ε량방정단류모형，채용다중삼고계모형（MRF）화벽면함수법，이용FLUENT연건대응용우중비전속충압한접다급리심빙적뉴곡식협륜、원주식협륜화도새식협륜진행내부류장적수치모의，득도료삼충협륜적내부류동특정。결과표명：뉴곡식협륜구유항기식성능강，무명현적분류층현상，교호적수력성능등특점，재삼충협편중최괄의채용뉴곡식협편，위중비전속충압한접다급빙적협륜설계선형제공료의거。
The numerical simulation of the inner flow field in the stamping-welded multistage centrifugal pump is conducted with the use of FLUENT software. This calculation is based on the full three-dimensional Reynolds-averaged Navier-Stokes equations and standard k-ε two equation turbulence model. Though the simulation, the internal flow characteristics of twist and cylindrical and clogging impellers are obtained. The results show that: the twist type impeller has no obvious stratification phenomenon and that it has better cavitation-resistant and hydraulic performance.The twist impeller is the most suitable type for medium specific speed stamping-welded multistage centrifugal pump.The numerical simulation provides a basis for the impeller design and model selection of medium specific speed stamping-welded multistage centrifugal pump.