Sequential limiting in continuous and discontinuous Galerkin methods for the Euler equations
Sequential limiting in continuous and discontinuous Galerkin methods for the Euler equations
复制标题
欧拉方程的连续和不连续伽辽金方法的序贯极限
DOI:
10.1016/j.jcp.2017.12.012
复制
发表时间:
2018
期刊:
影响因子:
--
通讯作者:
V. Tomov
中科院分区:
文献类型:
--
作者:
V. Dobrev;Tz. Kolev;D. Kuzmin;R. Rieben;V. Tomov
We present a new predictor-corrector approach to enforcing local maximum principles in piecewise-linear finite element schemes for the compressible Euler equations. The new element-based limiting strategy is suitable for continuous and discontinuous Galerkin methods alike. In contrast to synchronized limiting techniques for systems of conservation laws, we constrain the density, momentum, and total energy in a sequential manner which guarantees positivity preservation for the pressure and internal energy. After the density limiting step, the total energy and momentum gradients are adjusted to incorporate the irreversible effect of density changes. Antidiffusive corrections to bounds-compatible low-order approximations are limited to satisfy inequality constraints for the specific total and kinetic energy. An accuracy-preserving smoothness indicator is introduced to gradually adjust lower bounds for the element-based correction factors. The employed smoothness criterion is based on a Hessian determinant test for the density. A numerical study is performed for test problems with smooth and discontinuous solutions.
登录
查看更多内容
DOI:
10.1137/17m1149961
发表时间:
2017-10
期刊:
SIAM J. Sci. Comput.
影响因子:
--
作者:
J. Guermond;Murtazo Nazarov;B. Popov;I. Tomas
通讯作者:
J. Guermond;Murtazo Nazarov;B. Popov;I. Tomas
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
D. Kuzmin;C. Lohmann
通讯作者:
C. Lohmann
影响因子:
4.1
作者:
D. Kuzmin;M. Möller;J. Shadid;M. Shashkov
通讯作者:
M. Shashkov
影响因子:
1.8
作者:
G. Luttwak;J. Falcovitz
通讯作者:
J. Falcovitz
DOI:
10.1016/j.jcp.2016.02.021
发表时间:
2016
期刊:
J. Comput. Phys.
影响因子:
--
作者:
C.J. Cotter;D. Kuzmin
通讯作者:
D. Kuzmin