氢气安全分析软件CYCAS的研发及初步验证

基于计算流体力学方法进行了三维氢气安全分析软件CYCAS的自主研发，采用隐式连续欧拉-任意拉格朗日欧拉方法求解三维、可压、非定常的Navier-Stokes方程组。CYCAS通过求解多组分的质量守恒方程描述多组分气体的扩散和混合，气流中的水蒸气相变行为采用均相平衡模型模拟，而壁面上的相变行为采用Chilton-Colburn相似假设，湍流模拟选用了代数湍流模型和k-ε湍流模型。采用喷射实验HYJET和国际标准测试题ISP23对CYCAS进行了初步验证，计算结果与实验值吻合良好。

Development and Preliminary Validation of Hydrogen Safety Analysis Code CYCAS

A three‐dimensional computational fluid dynamic code CYCAS was developed for hydrogen safety analysis . T he code solved three‐dimensional , compressible and unsteady Navier‐Stokes equations by the numerical method of implicit continuous Euleri‐an‐arbitrary Lagrangian Eulerian .Multi‐component mass conservation equations were solved to describe the diffusion and mixing phenomenon .A homogeneous equilibrium model was applied to model the phase change of water vapor in the fluid flow .For the phase change near the wall ,the Chilton‐Colburn empirical analogy was used .Algebraic and k‐εturbulence models were employed to model the turbulent flow .The turbulent jet experiment HYJET and the international standard problem ISP23 were simulated and analyzed for CYCAS validation .The computational results agree well with the experi‐mental data .