TY - JOUR
T1 - An extended algebraic variational multiscale-multigrid-multifractal method (XAVM4) for large-eddy simulation of turbulent two-phase flow
AU - Rasthofer, U.
AU - Wall, W. A.
AU - Gravemeier, V.
N1 - Publisher Copyright:
© 2018 Elsevier Inc.
PY - 2018/4/15
Y1 - 2018/4/15
N2 - A novel and comprehensive computational method, referred to as the eXtended Algebraic Variational Multiscale-Multigrid-Multifractal Method (XAVM4), is proposed for large-eddy simulation of the particularly challenging problem of turbulent two-phase flow. The XAVM4 involves multifractal subgrid-scale modeling as well as a Nitsche-type extended finite element method as an approach for two-phase flow. The application of an advanced structural subgrid-scale modeling approach in conjunction with a sharp representation of the discontinuities at the interface between two bulk fluids promise high-fidelity large-eddy simulation of turbulent two-phase flow. The high potential of the XAVM4 is demonstrated for large-eddy simulation of turbulent two-phase bubbly channel flow, that is, turbulent channel flow carrying a single large bubble of the size of the channel half-width in this particular application.
AB - A novel and comprehensive computational method, referred to as the eXtended Algebraic Variational Multiscale-Multigrid-Multifractal Method (XAVM4), is proposed for large-eddy simulation of the particularly challenging problem of turbulent two-phase flow. The XAVM4 involves multifractal subgrid-scale modeling as well as a Nitsche-type extended finite element method as an approach for two-phase flow. The application of an advanced structural subgrid-scale modeling approach in conjunction with a sharp representation of the discontinuities at the interface between two bulk fluids promise high-fidelity large-eddy simulation of turbulent two-phase flow. The high potential of the XAVM4 is demonstrated for large-eddy simulation of turbulent two-phase bubbly channel flow, that is, turbulent channel flow carrying a single large bubble of the size of the channel half-width in this particular application.
KW - Extended finite element method
KW - Large-eddy simulation
KW - Multifractal subgrid-scale modeling
KW - Turbulent bubbly channel flow
KW - Turbulent two-phase flow
KW - Variational multiscale method
UR - http://www.scopus.com/inward/record.url?scp=85041640087&partnerID=8YFLogxK
U2 - 10.1016/j.jcp.2018.01.013
DO - 10.1016/j.jcp.2018.01.013
M3 - Article
AN - SCOPUS:85041640087
SN - 0021-9991
VL - 359
SP - 1
EP - 19
JO - Journal of Computational Physics
JF - Journal of Computational Physics
ER -