Development and Optimisation of a DNS Solver Using Open-source Library for High-performance Computing

We develope an optimised Direct Numerical Simulation (DNS) solver for laminar, transition, and turbulent flow. It utilises the Crank Nicholson scheme for time advancement, and it is spatially accurate up to fourth-order on uniform grids. The solver's salient features are multi-dimensional paral...

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Bibliographic Details
Published in:International journal of computational fluid dynamics 2021-07, Vol.35 (6), p.433-450
Main Authors: Khan, Hamid Hassan, Anwer, Syed Fahad, Hasan, Nadeem, Sanghi, Sanjeev
Format: Article
Language:English
Subjects:
blitz
Computation
Direct numerical simulation
DNS
Fluid dynamics
HDF5
Laminar flow
Libraries
Mathematical models
MPI
Multiprocessing
Object-oriented languages
Optimization
parallel
Simulation
Solvers
square duct
Turbulent flow
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Summary:We develope an optimised Direct Numerical Simulation (DNS) solver for laminar, transition, and turbulent flow. It utilises the Crank Nicholson scheme for time advancement, and it is spatially accurate up to fourth-order on uniform grids. The solver's salient features are multi-dimensional parallelisation and modular-based code, which is written in object-oriented C++ language. The DNS solver is developed in the MPI parallel platform using a cubic decomposition technique. The open-source library used for optimisation is MPI, blitz++, YAML, and HDF5 library. The parallel performance analysis of the optimised DNS solver on the multiprocessor computing system (supercomputer) shows 80 efficiency. The solver is verified and benchmarked for wall-bounded flows by simulation of laminar, transition, and turbulent flow in a square duct.
ISSN:1061-8562
1029-0257
DOI:10.1080/10618562.2021.1971656