Immersed boundary methods

Immersed boundary methods

The solvers for incompressible and compressible flows have support for including moving immersed boundaries given by the zero iso-contour of a level set function. Our tests indicate that the resulting DG schemes of order p converges with the optimal rate hp+1 for smooth geometries.

Inviscid flow over a Gaussian bump

by: Stephan Krämer-Eis, M.Sc.

Pressure contours for the inviscid flow over an immersed Gaussian bump. Both simulations use approximately the same number of degrees of freedom, but the fourth order simulation on the right clearly shows a much better resolution, despite the coarse resolution of the immersed geometry.

First order DG
First order DG
Fourth order DG
Fourth order DG

Müller, Björn ; Krämer-Eis, Stephan ; Kummer, Florian ; Oberlack, Martin (2017):
A high-order Discontinuous Galerkin method for compressible flows with immersed boundaries.
In: International Journal for Numerical Methods in Engineering, S. 3-30, 110, (1), ISSN 0029-5981,
[Online-Edition: http://doi.org/10.1002/nme.5343],
[Artikel]

zur TU-Biblio-Suche der ULB

Vortex shedding behind an immersed cylinder

by: Stephan Krämer-Eis, M.Sc.

Vortex shedding behind a cylinder (Re = 100, Ma = 0.2, DG degree is 4)

Müller, Björn ; Krämer-Eis, Stephan ; Kummer, Florian ; Oberlack, Martin (2017):
A high-order Discontinuous Galerkin method for compressible flows with immersed boundaries.
In: International Journal for Numerical Methods in Engineering, S. 3-30, 110, (1), ISSN 0029-5981,
[Online-Edition: http://doi.org/10.1002/nme.5343],
[Artikel]

zur TU-Biblio-Suche der ULB

Immersed oscillating cylinder in incompressible flow

by: Dennis Krause, M.Sc.

Vortex shedding behind an oscillating cylinder that is immersed into a constant background flow

Krause, Dennis ; Kummer, Florian ; Oberlack, Martin (2017):
Challenges of extending a Discontinuous Galerkin cut cell immersed boundary method to three dimensions.
In: XIX International Conference on Finite Elements in Flow Problems (FEF 2017), Rome, Italy, April 5 - 7, 2017, [Online-Edition: http://congress.cimne.com/FEF2017/admin/files/fileabstract/a...],
[Konferenzveröffentlichung]

zur TU-Biblio-Suche der ULB

Particle under gravity

by: Dennis Krause, M.Sc.

Falling particle in an incompressible medium

Krause, Dennis ; Kummer, Florian ; Oberlack, Martin (2017):
Challenges of extending a Discontinuous Galerkin cut cell immersed boundary method to three dimensions.
In: XIX International Conference on Finite Elements in Flow Problems (FEF 2017), Rome, Italy, April 5 - 7, 2017, [Online-Edition: http://congress.cimne.com/FEF2017/admin/files/fileabstract/a...],
[Konferenzveröffentlichung]

zur TU-Biblio-Suche der ULB