A pencil distributed finite difference code for strongly turbulent wall-bounded flows
| dc.contributor.author | Van Der Poel, Erwin P. | |
| dc.contributor.author | Ostilla-Mónico, Rodolfo | |
| dc.contributor.author | Donners, John | |
| dc.contributor.author | Verzicco, Roberto | |
| dc.date.accessioned | 2019-07-17T18:26:50Z | |
| dc.date.available | 2019-07-17T18:26:50Z | |
| dc.date.issued | 2015-01 | |
| dc.description.abstract | We present a numerical scheme geared for high performance computation of wall-bounded turbulentflows. The number of all-to-all communications is decreased to only six instances by using a two-dimensional (pencil) domain decomposition and utilizing the favourable scaling of the CFL time-stepconstraint as compared to the diffusive time-step constraint. As the CFL condition is more restrictiveat high driving, implicit time integration of the viscous terms in the wall-parallel directions is no longerrequired. This avoids the communication of non-local information to a process for the computation ofimplicit derivatives in these directions. We explain in detail the numerical scheme used for the integra-tion of the equations, and the underlying parallelization. The code is shown to have very good strong andweak scaling to at least 64 K cores. | |
| dc.identifier | 10.1016/j.compfluid.2015.04.007 | |
| dc.identifier.citation | Copyright 2015 Computers and Fluids. This is a pre-print version of a published paper that is available at : https://www.sciencedirect.com/science/article/pii/S0045793015001164. Recommended citation:van der Poel, Erwin P., Rodolfo Ostilla-Mónico, John Donners, and Roberto Verzicco. "A pencil distributed finite difference code for strongly turbulent wall-bounded flows." Computers & Fluids 116 (2015): 10-16. doi:10.1016/j.compfluid.2015.04.007. This item has been deposited in accordance with publisher copyright and licensing terms and with the author's permission. | |
| dc.identifier.uri | https://hdl.handle.net/10657/4131 | |
| dc.language.iso | en_US | |
| dc.publisher | Computers and Fluids | |
| dc.subject | Finite-difference scheme | |
| dc.subject | Turbulent flows | |
| dc.subject | Rayleigh-Benard convection | |
| dc.subject | Taylor-Couette flow | |
| dc.subject | Parallelization | |
| dc.title | A pencil distributed finite difference code for strongly turbulent wall-bounded flows | |
| dc.type | Article |