Numerical prediction of ship hydrodynamic performance at design stage using computational fluid dynamics (CFD) technique is a most important and challenging subject in the field of ship hydrodynamics.

采用计算流体动力学(CFD)技术实现在船舶设计阶段对船舶水动力性能的精确预报，是船舶水动力学学科中一个具有重大理论和实用意义的、富有挑战性的课题。

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So, how studies can accurately prediction to the contra-rotating propeller hydrodynamic performance is more important.

所以，研究如何更能准确地预报对转螺旋桨水动力性能更为重要。

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So, an in-depth study in how to make a accurate prediction of the hydrodynamic performance of the propeller is very important.

因此，深入地研究如何准确地预报螺旋桨的水动力性能是非常重要的。

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