Direct numerical simulation of turbulent flows.
A relevant fraction of the energy spent in transportation is lost in a thin layer where the surrounding fluid contacts the surface of the vehicle, called boundary layer. That thin layer, where the fluid is in a turbulent state, is still not fully understood. Describing the structure of the turbulent wall bounded flows, particularly boundary layers, but also pipes and other internal flows, is essential to improve the turbulence models and sub-grid approximation for large-eddy simulations, that are a key ingredient in most industrial CFD applications.
OpenTBL is a fast, highly scalable, and memory efficient code that uses a high resolution numerical scheme to simulate a turbulent boundary layer with a range of possible configurations. This code has provided the largest simulation of a zero-pressure-gradient boundary layer, that is publicly available to researchers and engineers.
- 458,752 cores (1,835,008 compute threads) on BlueGene/Q (JUQUEEN)
- 32,768 cores on BlueGene/P
- 8,192 cores on Cray XC-6
- 4,096 cores on x86-64
Programming language and model
- Fortran 2003
- Hybrid parallelism (MPI + OpenMP)
- I/O in parallel HDF5
Tested on platforms
- Cray XC-6
Application developers and contributors
- Javier Jiménez
- Juan A. Sillero
- Guillem Borrell
- Mark P. Simens (Previous version)
- Siwei Dong (Tests in JUQUEEN)
Universidad Politécnica de Madrid
Pza Cardenal Cisneros 3