PMID- 21857745
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20211020
IS  - 0021-9991 (Print)
IS  - 0021-9991 (Linking)
VI  - 230
IP  - 19
DP  - 2011 Aug 10
TI  - A Sharp-Interface Immersed Boundary Method with Improved Mass Conservation and 
      Reduced Spurious Pressure Oscillations.
PG  - 7347-7363
AB  - 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.
FAU - Seo, Jung Hee
AU  - Seo JH
AD  - Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, 
      21218.
FAU - Mittal, Rajat
AU  - Mittal R
LA  - eng
GR  - R01 DC007125-01A1/DC/NIDCD NIH HHS/United States
GR  - R01 DC007125-02/DC/NIDCD NIH HHS/United States
GR  - R01 DC007125-03/DC/NIDCD NIH HHS/United States
GR  - R01 DC007125-04/DC/NIDCD NIH HHS/United States
PT  - Journal Article
PL  - United States
TA  - J Comput Phys
JT  - Journal of computational physics
JID - 9883524
PMC - PMC3156558
MID - NIHMS307666
EDAT- 2011/08/23 06:00
MHDA- 2011/08/23 06:01
PMCR- 2012/08/10
CRDT- 2011/08/23 06:00
PHST- 2011/08/23 06:00 [entrez]
PHST- 2011/08/23 06:00 [pubmed]
PHST- 2011/08/23 06:01 [medline]
PHST- 2012/08/10 00:00 [pmc-release]
AID - 10.1016/j.jcp.2011.06.003 [doi]
PST - ppublish
SO  - J Comput Phys. 2011 Aug 10;230(19):7347-7363. doi: 10.1016/j.jcp.2011.06.003.