本文以E799A螺旋桨为研究对象，基于Fluent数值计算软件，采用结构网格和非结构网格共3套计算网格对其空泡性能进行计算。首先对J=0.71时全湿模态和空泡数为1.515下的推进系数与试验值进行对比，验证计算的准确性。然后选取了桨叶不同半径处的表面压力进行对比，与空泡图符合良好。通过对比气体体积分数分布图与试验空泡图，本文认为结构网格受网格质量影响较大，而非结构网格对于片空泡的模拟比较准确。而桨盘面处水流速度的轴向变化比较图，显示结构网格对于梢涡处流场的捕捉好于非结构网格，从侧面反映了结构网格更利于捕捉梢涡空泡。本文采用Fluent对E799A空泡性能计算进行初步探讨，对今后的研究工作有一定的借鉴意义。
The paper took E799A as study model and carried research on its cavitation performance with three different meshes based on Fluent. Comparison of thrust coefficient with experimental result verifies the accuracy of the simulation. Then blade surface pressure at different radius were contrasted. Comparison on cavitation of simulated result and experiment result shows that result of unstructured mesh matches the experiment result well while result of structured mesh depends more on mesh quality. Axial transformation of water velocity at propeller plane shows that structured mesh performs better at simulating tip vortex field than unstructured mesh, which indicates to some degree that structured mesh shall catch tip vortex cavitation well. The paper took research into cavitation performance of E799A with different meshes by Fluent, which is of much significance for future work.
2019,41(4): 30-33 收稿日期：2018-01-23
DOI：10.3404/j.issn.1672-7649.2019.04.006
分类号：U661.3
作者简介：袭鹏(1990-),男,博士研究生,研究方向为舰船流体动力性能
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