聚变灰尘实验装置STARDUST失真空事故的数值模拟

摘要

The numerical model for fusion dust experimental device STARDUST was established to calculate the velocity field in the experimental device under different conditions at the loss of vacuum accident(LOVA). And the numerical computation results had been compared with the experimental results. It shows that the numerical calculations carried out by the computational fluid dynamics method attained the purpose for reproducing the experimental physics process. In comparison with other turbulence models, the RNG k-8 turbulence model is more suitable for the numerical simulation of this computation. Numerical computation can predict the risk of LOVA.%建立了聚变灰尘实验装置STARDUST相应的数值计算模型,用数值模拟对失真空事故(LOVA)实验物理过程进行了重现.模拟计算了该实验装置在不同位置处的破口产生LOVA后的速度场发展过程.给出腔室内关键位置速度变化曲线,并与实验所测量到的相应点的速度变化曲线进行了比较.结果表明应用计算流体力学所进行的数值模拟计算达到了对实验重现的目的,其中RNG k-ε湍流模型能够对发生失真空事故下的气体流动状态进行较好的模拟,而且可以较好地预测失真空事故的风险.