Modified ghost fluid method on LBM with reduced spurious pressure oscillations for moving boundaries

Li Chen (), Haihang Cui () and Lei Wang
Additional contact information
Li Chen: Xi’an University of Architecture and Technology, No. 13, Yanta Road, Xi’an, Shaanxi 710055, P. R. China
Haihang Cui: Xi’an University of Architecture and Technology, No. 13, Yanta Road, Xi’an, Shaanxi 710055, P. R. China
Lei Wang: Xi’an University of Architecture and Technology, No. 13, Yanta Road, Xi’an, Shaanxi 710055, P. R. China

International Journal of Modern Physics C (IJMPC), 2017, vol. 28, issue 04, 1-15

Abstract: A modified ghost fluid (MGF) method for reducing the spurious pressure oscillations in moving boundaries is proposed on the lattice Boltzmann method (LBM). The primary cause of these oscillations is the violation of the boundary geometric conservation law for sharp-interface immersed boundary. We introduce a simple weight strategy into GF method to strictly enforce geometric conservation. The weight strategy reduces the abrupt change of the distribution function on the boundary node when passing through the moving boundary. Some simulations are shown to test the validity of the method. The results illustrate that the modified method maintains the same validity as the GF and reduces the spurious pressure oscillations near the boundaries.

Keywords: Lattice Boltzmann; ghost fluid; moving boundary; geometric conservation law; spurious pressure oscillations (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0129183117500565
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:ijmpcx:v:28:y:2017:i:04:n:s0129183117500565

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0129183117500565

Access Statistics for this article

International Journal of Modern Physics C (IJMPC) is currently edited by H. J. Herrmann

More articles in International Journal of Modern Physics C (IJMPC) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().