具有正确内能弛豫率的双原子气体ES-BGK模型
An ES-BGK model for diatomic gases with correct relaxation rates for internal energies
摘要：
我们提出了一个新的双原子气体的ES-BGK模型，该模型允许由Landau-Teller和Jeans弛豫方程给出的双原子气体的自旋-转动和自旋-振动能量交换。该模型与DSMC求解器中常用的振动和旋转碰撞数的一般定义一致。它被证明满足H定理，并给出正确的传输系数，体积粘度。
英文摘要：
We propose a new ES-BGK model for diatomic gases which allows for translational-rotational and translational-vibrational energy exchanges, as given by Landau-Teller and Jeans relaxation equations. This model is consistent with the general definition of the vibrational and rotational collision numbers that are also commonly used in DSMC solvers. It is proved to satisfy the H-theorem and to give the correct transport coefficients, up to the volume viscosity.
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