摘要
在计算流体力学软件FLUENT中,包含有很多计算模型,对于不同的问题需要采用一种较好的模型进行解决,目前较为广泛使用的湍流模型是k-ε二方程模型。本文基于CFD软件,应用k-ε二方程湍流模型对细长体绕流问题进行数值模拟计算,进而比较湍流模型中湍流参数的设置对计算结果的影响。通过模拟计算得到的湍流强度(%)I及粘性比的取值范围有较好的适应性;水下片体间存在有利干扰和不利干扰,采用k-ε二方程湍流模型计算双体的互相干扰是可行的。
The software FLUENT that calculates fluid dynamics contains a lot of computing models. Different issues need to adopt a better model solution,which requires a good understanding of the models. Nowadays the k-ε model is widely used. The paper applies the k-ε model to carry numerical simulation calculation and compare parameter settings. Calculated by simulating the onflow intensity （%） Ⅰ and the viscosity ratio range have better adaptability;between the underwater demihull has the beneficial and adverse interference,the use of k-ε two equation onfiow model to calculate the disturbance of the two demihulls is feasible.
出处
《舰船科学技术》
2009年第7期32-36,共5页
Ship Science and Technology
基金
重庆市科委资助项目(CSTC
2007AB3037)
关键词
数值模拟
k-ε模型
湍流强度
numerical simulation
k-ε model
onflow intensity
