Modeling and analysis of large-eddy simulations of particle-laden turbulent boundary layer flows

Handle URI:
http://hdl.handle.net/10754/625563
Title:
Modeling and analysis of large-eddy simulations of particle-laden turbulent boundary layer flows
Authors:
Rahman, Mustafa M.; Samtaney, Ravi ( 0000-0002-4702-6473 )
Abstract:
We describe a framework for the large-eddy simulation of solid particles suspended and transported within an incompressible turbulent boundary layer (TBL). For the fluid phase, the large-eddy simulation (LES) of incompressible turbulent boundary layer employs stretched spiral vortex subgrid-scale model and a virtual wall model similar to the work of Cheng, Pullin & Samtaney (J. Fluid Mech., 2015). This LES model is virtually parameter free and involves no active filtering of the computed velocity field. Furthermore, a recycling method to generate turbulent inflow is implemented. For the particle phase, the direct quadrature method of moments (DQMOM) is chosen in which the weights and abscissas of the quadrature approximation are tracked directly rather than the moments themselves. The numerical method in this framework is based on a fractional-step method with an energy-conservative fourth-order finite difference scheme on a staggered mesh. This code is parallelized based on standard message passing interface (MPI) protocol and is designed for distributed-memory machines. It is proposed to utilize this framework to examine transport of particles in very large-scale simulations. The solver is validated using the well know result of Taylor-Green vortex case. A large-scale sandstorm case is simulated and the altitude variations of number density along with its fluctuations are quantified.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program
Citation:
Rahman MM, Samtaney R (2017) Modeling and analysis of large-eddy simulations of particle-laden turbulent boundary layer flows. 55th AIAA Aerospace Sciences Meeting. Available: http://dx.doi.org/10.2514/6.2017-0981.
Publisher:
American Institute of Aeronautics and Astronautics
Journal:
55th AIAA Aerospace Sciences Meeting
KAUST Grant Number:
URF/1/1704-01-01
Conference/Event name:
55th AIAA Aerospace Sciences Meeting
Issue Date:
5-Jan-2017
DOI:
10.2514/6.2017-0981
Type:
Conference Paper
Sponsors:
The work is supported by KAUST Office of Competitive Research Fund under Award No. URF/1/1704-01-01. The Cray XC40 Shaheen at KAUST was utilized for the simulations. The authors would like to acknowledge discussions with Wan Cheng of KAUST.
Additional Links:
https://arc.aiaa.org/doi/10.2514/6.2017-0981
Appears in Collections:
Conference Papers; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorRahman, Mustafa M.en
dc.contributor.authorSamtaney, Ravien
dc.date.accessioned2017-10-03T12:49:26Z-
dc.date.available2017-10-03T12:49:26Z-
dc.date.issued2017-01-05en
dc.identifier.citationRahman MM, Samtaney R (2017) Modeling and analysis of large-eddy simulations of particle-laden turbulent boundary layer flows. 55th AIAA Aerospace Sciences Meeting. Available: http://dx.doi.org/10.2514/6.2017-0981.en
dc.identifier.doi10.2514/6.2017-0981en
dc.identifier.urihttp://hdl.handle.net/10754/625563-
dc.description.abstractWe describe a framework for the large-eddy simulation of solid particles suspended and transported within an incompressible turbulent boundary layer (TBL). For the fluid phase, the large-eddy simulation (LES) of incompressible turbulent boundary layer employs stretched spiral vortex subgrid-scale model and a virtual wall model similar to the work of Cheng, Pullin & Samtaney (J. Fluid Mech., 2015). This LES model is virtually parameter free and involves no active filtering of the computed velocity field. Furthermore, a recycling method to generate turbulent inflow is implemented. For the particle phase, the direct quadrature method of moments (DQMOM) is chosen in which the weights and abscissas of the quadrature approximation are tracked directly rather than the moments themselves. The numerical method in this framework is based on a fractional-step method with an energy-conservative fourth-order finite difference scheme on a staggered mesh. This code is parallelized based on standard message passing interface (MPI) protocol and is designed for distributed-memory machines. It is proposed to utilize this framework to examine transport of particles in very large-scale simulations. The solver is validated using the well know result of Taylor-Green vortex case. A large-scale sandstorm case is simulated and the altitude variations of number density along with its fluctuations are quantified.en
dc.description.sponsorshipThe work is supported by KAUST Office of Competitive Research Fund under Award No. URF/1/1704-01-01. The Cray XC40 Shaheen at KAUST was utilized for the simulations. The authors would like to acknowledge discussions with Wan Cheng of KAUST.en
dc.publisherAmerican Institute of Aeronautics and Astronauticsen
dc.relation.urlhttps://arc.aiaa.org/doi/10.2514/6.2017-0981en
dc.titleModeling and analysis of large-eddy simulations of particle-laden turbulent boundary layer flowsen
dc.typeConference Paperen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
dc.identifier.journal55th AIAA Aerospace Sciences Meetingen
dc.conference.date2017-01-09 to 2017-01-13en
dc.conference.name55th AIAA Aerospace Sciences Meetingen
dc.conference.locationGrapevine, TX, USAen
kaust.authorRahman, Mustafa M.en
kaust.authorSamtaney, Ravien
kaust.grant.numberURF/1/1704-01-01en
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