好比说要是计算马赫数是5的话，就在马赫数4的计算结果上算 数值耗散（numerical diffusion ） 用于FLUENT 中的二阶分离方案有助于减小数值耗散对解的影响 留意：Second Order格式不可以用于多孔介质；在使用VOF和Mixture...
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数值耗散系数 coefficient of numerical dissipation
The flexible parts are discretized by the ANC-based locking-free shear deformable beam element. The system equations of motion with constant mass matrix are also obtained and solved by the numerical dissipation controllable generalized-a method.
采用基于绝对节点坐标的无闭锁效应剪变梁单元离散柔性构件,建立了含常数质量矩阵的系统动力学方程,并采用数值耗散可控的广义a方法求解。
参考来源 - 含分数阻尼特性元件的多体系统动力学研究·2,447,543篇论文数据，部分数据来源于NoteExpress
得出该格式的数值耗散为二阶，数值频散为三阶。
It is found that the numerical dissipation is second order and the numerical dispersion is third order.
计算结果表明，本文方法能够有效地减少旋翼尾迹的数值耗散。
It is shown that the present method can effectively reduce the numerical dissipation of the rotor wake.
为减少尾迹数值耗散和便于添加上述边界条件，采用了嵌套网格方法。
Embedded grids are adopted to weaken the numerical diffusion of the wake and to apply the above boundary conditions.
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