Slope limiters play an essential in maintaining the non-oscillatory behavior of high-resolution methods for nonlinear conservation laws. The family of minmod limiters serves as the prototype example. Here, we revisit the question of non-oscillatory behavior of high-resolution central schemes in terms of the slope limiter proposed by van Albada et. al. 1982. The van Albada limiter is smoother near extrema, and consequently, it outperforms the standard minmod limiter. In particular, we prove that the vA limiter ensures 1D TVD stability and demonstrate that it yields noticeable improvement in computation of one- and two-dimensional systems.
翻译:斜率限制器在维持非振荡高分辨率方法对非线性守恒律的行为中起着至关重要的作用。minmod限制器家族作为原型例子。在这里,我们重新探讨了高分辨率中心格式的非振荡行为问题,涉及到van Albada等人提出的斜率限制器。Van Albada斜率限制器在极值附近更加光滑,因此它的性能优于标准的minmod限制器。特别地,我们证明了vA限制器保证了一维的TVD稳定性,并证明它在计算一维和二维系统时产生了明显的改善。