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首页> 外文会议>International offshore and polar engineering conference;ISOPE-2009 >Analysis of the Hydrodynamic Performances of High-Speed Catamarans by Viscous Flow Solver
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Analysis of the Hydrodynamic Performances of High-Speed Catamarans by Viscous Flow Solver

机译：用粘性流解法分析高速双体船的水动力性能

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The analysis of the interference effects on an high-speed catamarans iscarried out by means of the numerical solution of the ReynoldAveraged Navier-Stokes equations. Focus is on the analysis of theviscous effects on the interference, and its dependency on the Reynoldsnumber. To this aim, numerical simulations were carried out for Reranging from ～10~6 to ～10~8, for two different values of the Froudenumber (Fr=0.30, 0.45). The analysis is carried out by means of an inhouseparallel unsteady RANS solver, based on a finite volumediscretization. The free surface is handled by means of a suitable singlephase level set algorithm; moreover, Chimera overlapping gridcapabilities have been implemented. Wave patterns, wave profiles,surface pressure and velocity fields are analyzed and comparison ismade with the demihull configuration. Dependencies of the pressureand viscous resistance coefficients, as well as of the interference factoron the Reynolds number, is investigated. Verification and validation ofthe computed resistance coefficients is also performed.
机译：利用ReynoldAveraged Navier-Stokes方程的数值解，对高速双体船的干扰效应进行了分析。重点是分析粘度对干扰的影响及其对雷诺数的依赖性。为此，针对两个不同的Froudenumber值（Fr = 0.30，0.45），进行了从〜10〜6到〜10〜8范围内的数值模拟。该分析是基于有限体积离散的室内并行非稳态RANS求解器进行的。自由表面通过合适的单相能级设置算法处理。此外，已经实现了Chimera重叠的网格功能。分析了波型，波剖面，表面压力和速度场，并与反舰船体结构进行了比较。研究了压力和粘性阻力系数以及干扰因子对雷诺数的依赖性。还对计算出的电阻系数进行验证和确认。

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