基于动网格的螺旋桨空化数值模拟

摘要

The DTMB4381 propeller cavitation is numerically simulated using Schnerr-sauer cavitation model ,RNG k - ε turbulence model and dynamic mesh model. The predicted cavity shapes agrees well with the experimental observation and numerical simulation result on open literature at the condition that J = 0. 7 ,σ = 3. 5. So,this method could be well used in predicted propeller cavitation,it is a basis for future propeller cavitation research.%利用Schnerr-sauer空化模型及RNGk-ε湍流模型,并采用动网格模型对DTM B4381螺旋桨进行空化数值模拟.在进速系数J=0.7,空泡数σ=3.5条件下,预报的空泡形态与公开发表试验及数值模拟结果吻合度较好.因此,利用该方法可以较好地预报空泡性能,为进一步研究螺旋桨空化问题打下基础.