A CHannel And Pipe flow simulation solver, CHAPSim, is described here. CHAPSim is an incompressible Direct Numerical Simulation (DNS) code for flow and heat transfer with MPI parallelization. This repository contains the latest stable version.
The early version of CHAPSim was developed by Dr Mehdi Seddighi-Moornani in f77 platform for simulations of unsteady turbulent flows in a channel during his PhD study starting from 2007. The code has later been revamped by Dr Wei Wang for solving thermo-fluids problems in f90 platform in 2014/2015. All this early development work was carried out while Drs Seddighi-Moornani and Wang were working with Professor Shuisheng He at Universities of Aberdeen and Sheffield. In 2020, CHAPSim was selected by CCP.NTH to be developed as an open-source community code in partnership with STFC Daresbury Laboratory (Contact: Dr Wei Wang), Liverpool John Moores University (Contact: Dr Mehdi Seddighi) and University of Sheffield (Contact: Professor Shuisheng He) and released under the GNU General Public License, that is a free, copyleft license.
GNU General Public License This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License or (at your option) any later version. This program is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. Also, add information on how to contact you by electronic and paper mail.
- Wei Wang, DL-STFC-UKRI. (wei.wang@stfc.ac.uk, wei.wang@sheffield.ac.uk)
- Mehdi Seddighi, Liverpool John Moors University. (m.seddighi@ljmu.ac.uk)
- Shuisheng He, The University of Sheffield. (s.he@sheffield.ac.uk)
CHAPSim is a Fortran-MPI based finite difference code to solve the conservative variables (
| Methods | |
|---|---|
| Parallel | MPI |
| Mesh | Structured, generated on the fly |
| Spacial Discretization | Finite Difference |
| Nonlinear terms | Divergence form |
| 2nd order spacial accuracy | |
| explicit Runge-Kutta & Adams-Bashforth method for temporal discretization | |
| Viscous terms | implicit Crank-Nicolson method for temporal discretization |
| Pressure | FFT and Fractional step method |
| Thermodynamics | Quasi-incompressible flow |
| Thermal properties updated by table-searching or specified functions of temperature |
Acquire the source code by cloning the git repository:
git clone git@github.com:CHAPSim/CHAPSim1.0.git
Compile the codes:
mkdir bin obj
make all
Run the code:
mpirun -n 4 ./bin/CHAPSim
If you have previously downloaded CHAPSim using git clone, you can update the existing source tree using git pull rather than starting a new:
cd CHAPSim
git pull && make