An Embedded Ghost-Fluid Method for Compressible Flow in Complex Geometry
Type
ArticleAuthors
Al-Marouf, Mohamad
Samtaney, Ravi

KAUST Department
Fluid and Plasma Simulation Group (FPS)Mechanical Engineering Program
Physical Science and Engineering (PSE) Division
KAUST Grant Number
URF/1/1394-01Date
2016-04Permanent link to this record
http://hdl.handle.net/10754/621376
Metadata
Show full item recordAbstract
We present an embedded ghost-fluid method for numerical solutions of the compressible Navier Stokes (CNS) equations in arbitrary complex domains. The PDE multidimensional extrapolation approach of Aslam [1] is used to reconstruct the solution in the ghost-fluid regions and impose boundary conditions at the fluid-solid interface. The CNS equations are numerically solved by the second order multidimensional upwind method of Colella [2] and Saltzman [3]. Block-structured adaptive mesh refinement implemented under the Chombo framework is utilized to reduce the computational cost while keeping high-resolution mesh around the embedded boundary and regions of high gradient solutions. Numerical examples with different Reynolds numbers for low and high Mach number flow will be presented. We compare our simulation results with other reported experimental and computational results. The significance and advantages of our implementation, which revolve around balancing between the solution accuracy and implementation difficulties, are briefly discussed as well. © 2016 Trans Tech Publications.Citation
Al-Marouf M, Samtaney R (2016) An Embedded Ghost-Fluid Method for Compressible Flow in Complex Geometry. DDF 366: 31–39. Available: http://dx.doi.org/10.4028/www.scientific.net/DDF.366.31.Sponsors
URF/1/1394-01, KAUSTPublisher
Trans Tech Publications, Ltd.Journal
Defect and Diffusion Forumae974a485f413a2113503eed53cd6c53
10.4028/www.scientific.net/DDF.366.31