numerical flux meaning in English
数值通量
Examples
- Numerical fluxes considered in the explicit portion of the algorithm were evaluated by an implicit high - order compact scheme to augment stability . meanwhile , an implicit high - order compact numerical filter was used
显式一边的空间导数采用具有较高精度和良好数值稳定性的隐式高阶紧致差分格式，同时采用适于低马赫数流动计算的隐式高阶数值过滤方法。 - In order to achieve a computer code with a maximum degree of vectorization , the numerical flux function must be written uniformly with sign function . to get higher order accuracy , the muscl interpolation functions are applied for van leer and roe schemes
Vanleer和roe格式摘要( abstraet )均采用muscl插值使格式具有高阶精度，并采用连续可微的vanalbada通量限制器，使格式具有良好的稳定性和收敛特性。 - In these regions , an expensive high - order accurate eno scheme is applied to evaluate the numerical flux at cell boundaries . and hi smooth regions a cheap spline interpolation is used to get the value of the numerical divergence from values previously obtained on lower resolution scales to save the computational cost
在这些奇性区域，我们利用代价昂贵的高阶基本无振荡格式计算单元边界的数值通量；而在解光滑的区域，则用廉价的样条插值根据先前低分辨尺度上得到的值来计算出其数值散度，从而减少计算工作量。 - In this work , we detailedly introduced the whole ideas of rkdg finite element method and the theory of constructing gas - kinetic schemes based on boltzmann equation . and then presented a kind of new computational method for solving id and 2d compressible euler equations , i . e . firstly , we discretize euler equations in the space with discontinuous galerkin finite element method ; secondly , we discretize temporal variable t with runge - kutta formula ; thirdly , for numerical fluxes constructing , we give two kinds of different numerical fluxes - kfvs and bgk numerical fluxes by using gas - kinetic schemes
本文分别对rkdg有限元方法的整个思想和基于boltzmann方程的分子动力学格式的构造思想给予了详细的介绍，并分别结合rkdg有限元方法与kfvs数值通量和bgk数值通量的构造方法，给出了一种求解一维、二维可压缩流体力学方程组新的计算方法，即，我们先用间断有限元方法进行空间离散，然后再对所得到的半离散格式使用runge - kuttatvd方法进行时间离散，得到全离散格式。 - In fluid field solving , the numerical flux is estimated using high - accuracy roe scheme with limiter . in time marching , we use dual - time stepping together with implicit lu - sgs scheme and get reasonable results efficiently . the difference of the fluid computation between single grid and overset grids lies in the dispose of the computation boundary
流场解算时,对流场数值通量的求解采用的是带限制器的高阶精度roe格式,时间推进采用了含双时间步长的隐式lu - sgs ( lower - uppersymmetricgauss - seidel )格式,提高了求解的效率。