shock capturing meaning in English
激波捕获技术
Examples
- In this thesis , we couple high resolution shock capturing method and level set method to compute hyperbolic conservation laws
本文将高分辨率激波捕捉格式与levelset方法结合起来计算双曲守恒律方程(组) 。 - For scalar equation and system of equations , we build different ghost fields , translate one equation ( system ) into two equations ( system ) . we still use high resolution shock capturing method to compute the two equations ( system ) ; level set equation is used to track the interface , and the result of original equation ( system ) is determined by the level set function . thus , we eliminate the numerical dissipation which high resolution shock capturing method cannot avoid near the interface , and the resolution is enhanced
对标量守恒律方程、守恒律方程组分别构造了一种虚拟区域，将一个方程(组)转化成两个方程(组) ，对这两个方程(组) ，我们仍然使用高分辨率激波捕捉格式，而levelset方程用来追踪间断的位置，原方程(组)的解最后由levelset函数决定：这样做弥补了高分辨率激波捕捉方法在间断附近发生数值耗散的缺陷，提高间断处的分辨率。 - For applications involving shocks , second order schemes such as tvd schemes are usually adequate if only relatively simple structures are present in the smooth part of the solution . however , high order shock capturing schemes ( order of at least three ) are more efficient than low order schemes when a problem contains rich structures as well as schocks
在计算含有激波但光滑区不存在复杂波系结构的流场时，二阶差分格式如tvd类格式已能够得到比较理想的数值计算结果；然而，对于即含激波，光滑区又富含各种波系结构的流场，高阶高精度格式的激波捕捉格式相对低阶格式具有更高的分辨率，更能够反映流场的真实流动。 - From the experiments in hyperbolic conservation laws , we can see that if we only use high resolution shock capturing method in scalar equation , there would have a transition near the interface ; but when coupled with level set method , we can get a sharp interface , the interface is tracked exactly
通过实验可以看出，对标量双曲守恒律方程应甩levelset方法后，我们得到了锐利的图像，界面得到了准确追踪，而不像高分辨率激波捕捉方法，在界面附近有一个过渡区域。