A Sharp-Interface Immersed Boundary Method with Improved Mass Conservation and Reduced Spurious Pressure Oscillations
By Jung Hee Seo, Rajat Mittal. Journal of Computational Physics, 2011
424 citations recorded by the source corpus.
A method for reducing the spurious pressure oscillations observed when simulating moving boundary flow problems with sharp-interface immersed boundary methods (IBMs) is proposed. By first identifying the primary cause of these oscillations to be the violation of the geometric conservation law near the immersed boundary, we adopt a cut-cell based approach to strictly enforce geometric conservation. In order to limit the complexity associated with the cut-cell method, the cut-cell based discretization is limited only to the pressure Poisson and velocity correction equations in the fractional-step method and the small-cell problem tackled by introducing a virtual cell-merging technique. The method is shown to retain all the desirable properties of the original finite-difference based IBM while at the same time, reducing pressure oscillations for moving boundaries by roughly an order of magnitude.
Subfields: Computational Mechanics, Electrical and Electronic Engineering
View Paper: https://www.semanticscholar.org/paper/f253ec6067ef9e86e8e411aa161368e9c865cccc
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Computational Mechanics
In Electrical and Electronic Engineering
Citations in the corpus
- Fluid–structure interaction involving large deformations: 3D simulations and applications to biological systems (2014, methodology): “On top of the fundamental ideas of the immersed-boundary method, many additional features have been developed to enhance the capability or improve the performance of the method, for example, multi-block and adaptive meshes to enable local refinement [14], curvilinear grids to adapt to the overall ge”