低耗散E-CUSP格式性能分析及大攻角分离流数值模拟

发布时间：2017-12-26 16:18

本文关键词：低耗散E-CUSP格式性能分析及大攻角分离流数值模拟　出处：《舰船科学技术》2017年18期 　论文类型：期刊论文

【摘要】：为了降低舰艇在高速航行时受到的空气和海浪阻力,船型的设计必须要符合流体动力学特性。由于舰艇的几何外型越来越复杂,促使研究人员寻找精度更高、收敛速度更快的CFD计算方法。经过几十年的发展,CFD计算方程和计算格式发展迅速,产生了拉普拉斯方程、欧拉方程、小扰动速势方程、通量差分分裂迎风格式等,在航空航天、船舶工业、飞行器设计等领域获得了广泛的应用。本文针对高速舰艇在大攻角条件下的航行状态,利用基于Roe格式的低耗散E-CUSP迎风格式算法,对舰艇细长旋成体的流体动力学特性进行了分析和大攻角分离流数值模拟。
[Abstract]:In order to reduce the air and wave resistance of the ship at high speed, the design of the ship type must conform to the hydrodynamic characteristics. Because the geometric shape of the ship is becoming more and more complex, the researchers are looking for the CFD calculation method of higher precision and faster convergence speed. After decades of development, the CFD equations and the numerical format of the rapid development of the Laplasse equation, Euler equation, perturbation potentialequation, flux difference splitting upwind scheme, in the field of aerospace, shipbuilding, aircraft design has been widely used. Aiming at the sailing state of high-speed ships at large angle of attack, the hydrodynamic characteristics of slender body of ships are analyzed and the numerical simulation of large angle of attack separation flow is carried out by using the low dissipation E-CUSP upwind algorithm based on Roe format.
【作者单位】：重庆工程职业技术学院;
【基金】：重庆市高等职业技术院校新技术推广资助项目(GZTG201609) 重庆市教委科学技术研究资助项目(KJ1732434)
【分类号】：O35;U674.70
【正文快照】： 计算流体动力学(Computation Fluid Dynamics,CFD)利用高性能计算机完成数值计算和模拟功能,对流体和热传导等物理系统进行分析和仿真。CFD将连续的空间域和时间域的物理量场(力场、磁场等)划分为离散的变量集合,并建立集合离散集合的函数方程,对代数方程求解即可得到变量场的

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