Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Frieder Lörcher"'
Publikováno v:
International Journal of Turbomachinery, Propulsion and Power, Vol 7, Iss 4, p 37 (2022)
For a backward curved centrifugal fan, reducing volume flow rate from design operating point towards part load yields an increase in noise emission together with a reduction of efficiency. The spectral content of the emerging noise emission can be ch
Externí odkaz:
https://doaj.org/article/9a94a4026ca043f3a695c2d358c06e62
Publikováno v:
IEEE Transactions on Plasma Science. 37:513-519
In this paper, we present the extension of the space-time expansion discontinuous Galerkin to handle ideal and viscous magnetohydrodynamics (MHD) equations. The local time-stepping strategy that this scheme is capable of allows each cell to have its
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0221612a16dc3a93d10db6bbf78105cb
https://doi.org/10.1109/tps.2009.2014869
https://doi.org/10.1109/tps.2009.2014869
Publikováno v:
Journal of Computational Physics. 228:1573-1590
In this work, we discuss two different but related aspects of the development of efficient discontinuous Galerkin methods on hybrid element grids for the computational modeling of gas dynamics in complex geometries or with adapted grids. In the first
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2db531acbc3c2296186914265d8846a2
https://doi.org/10.1016/j.jcp.2008.11.012
https://doi.org/10.1016/j.jcp.2008.11.012
Publikováno v:
Journal of Computational Physics. 227:5649-5670
In this paper we propose a discontinuous Galerkin scheme for the numerical approximation of unsteady heat conduction and diffusion problems in multi dimensions. The scheme is based on a discrete space-time variational formulation and uses an explicit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9ff86d59d0f18c185734b0ec127eee3
https://doi.org/10.1016/j.jcp.2008.02.015
https://doi.org/10.1016/j.jcp.2008.02.015
Publikováno v:
Journal of Scientific Computing. 34:260-286
In part I of these two papers we introduced for inviscid flow in one space dimension a discontinuous Galerkin scheme of arbitrary order of accuracy in space and time. In the second part we extend the scheme to the compressible Navier-Stokes equations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::665f915a1599d9acbc8beab482f1f745
https://doi.org/10.1007/s10915-007-9169-1
https://doi.org/10.1007/s10915-007-9169-1
Publikováno v:
Journal of Computational Physics. 224:1049-1063
In this paper, we consider numerical approximations of diffusion terms for finite volume as well as discontinuous Galerkin schemes. Both classes of numerical schemes are quite successful for advection equations capturing strong gradients or even disc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4480c3b60ccc453bd453237ddc08c818
https://doi.org/10.1016/j.jcp.2006.11.004
https://doi.org/10.1016/j.jcp.2006.11.004
Publikováno v:
Journal of Scientific Computing. 32:175-199
In this paper, we propose an explicit discontinuous Galerkin scheme for conservation laws which is of arbitrary order of accuracy in space and time. The basic idea is to use a Taylor expansion in space and time to define a space---time polynomial in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df4858c0ac963fa6db88cd706d0b31f0
https://doi.org/10.1007/s10915-007-9128-x
https://doi.org/10.1007/s10915-007-9128-x
Autor:
Claus-Dieter Munz, Frieder Lörcher
Publikováno v:
IMA Journal of Numerical Analysis. 27:593-615
The second-order accurate Lax-Wendroff scheme is based on the first three terms of a Taylor expansion in time in which the time derivatives are replaced by space derivatives using the governing evolution equations. The space derivatives are then appr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbac7aa345d3d278b50f6cacd71cdc1b
https://doi.org/10.1093/imanum/drl031
https://doi.org/10.1093/imanum/drl031
Publikováno v:
Computational Fluid Dynamics Review 2010
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a0ea29d2e942a13703ad7709145102a
https://doi.org/10.1142/9789814313377_0005
https://doi.org/10.1142/9789814313377_0005
Autor:
Gregor J. Gassner, Claus-Dieter Munz, Frieder Lörcher, Arne Taube, Christoph Altmann, Jens Utzmann
Publikováno v:
Notes on Numerical Fluid Mechanics and Multidisciplinary Design ISBN: 9783642142420
The objective of our project is the development of high-order methods for the unsteady Euler and Navier Stokes equations. For this, we consider an explicit DG scheme formulated in a space-time context called the Space-Time Expansion DG scheme (STE-DG
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0f93da1b8efce0ba1eab50ebb732de8
https://doi.org/10.1007/978-3-642-14243-7_19
https://doi.org/10.1007/978-3-642-14243-7_19