材料期刊网

经多年努力，开发完成了一个通用统一的计算流体力学软件。该软件采用有限体积方法，基于焓、速度与压力为原始变量，构建了相应的流体力学预处理方法，用以焓与压力为自变量的任意工质状态方程或热力性质表格来封闭流体力学方程组；用Roe格式离散对流项，通过VanLeer提出的状态插值法实现格式的高精度；软件采用多块网格、多重网格、拼接网格、重叠网格、嵌套网格、变形网格以及并行计算等技术，可以进行任意工质、各种复杂内流与外流的定常、非定常及流固耦合流场的模拟。

A common and unified computational fluid dynamics software has been developed after many years of effort. Based on the finite volume method, this software uses enthalpy, velocity and pressure as primitive variables, design a corresponding pre-conditioning technique in fluid dynamics and close the fluid dynamics equations by using any equation of state whose variables are enthalpy and pressure or the thermodynamic properties tables associated with the working fluid. To discretize the convective terms, Roe＇s scheme has been applied and a high accuracy scheme can be achieved with the aid of the state interpolation approach introduced by van Leer. The software can adopt multi-block grid, multi-grid, patched-grid, overlapping grid, nested grid, deformation grid and parallel technology. As a result, it has been developed for application to a wide range of numerical simulation problems including different working fluids, various complex internal and external flows, steady and unsteady flows and also fluid-structure interaction.