# FluiDNS
A highly accurate pseudo-spectral DNS solver for 2 dimensional incompressible flows with heat transfer is presented. Semi-implicit compact finite difference scheme is implemented for 4th order spatial accuracy with pressure-poisson formulation for 2-dimensional incompressible Navier-Stokes equations. Multiple time integration methods are included to capture the unsteady dynamics for various flow problems. FFT based pseudo-spectral solver is used for the highly accurate solutions of pressure-poisson equation. Solver is highly optimized for the serial implementation in Python on Linux systems with Thomas' algorithm and LU decomposition for solutions of matrix equations. It solves the governing equations on a collacated uniform cartesian mesh with immersed boundary methods for the description of solid bodies with or without oscillations inside the flow fields. The code is well tested and validated for the various 2-dimensional convective heat transfer problems.
# Instructions
1. Download all the modules in a working directory.
2. FluiDNS.py is the driver script. Set all required parameters and specifications with save directory for outputs.
3. Check for all dependencies before running simulation.
4. For windows, run it with 'python FluiDNS.py'
# Dependencies
1. Numpy
2. Scipy
3. Numba
5. uvw (for writing .vtr files)
FluiDNS_Windows:Windows版本的2D DNS求解器-FluiDNS
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2021-03-10
15:23:50
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FluiDNS_Windows-main.zip （39个子文件） 
FluiDNS_Windows-main source 
con_diff.py 2KB time_integrators.py 4KB IBM.py 2KB pade_compact.py 4KB auxfunx.py 6KB __init__.py 48B linsol.py 979B simulator.py 12KB __pycache__ con_diff.cpython-36.pyc 2KB auxfunx.cpython-36.pyc 6KB auxfunx.cpython-38.pyc 6KB IBM.cpython-37.pyc 1KB con_diff.cpython-37.pyc 2KB bound_co.cpython-37.pyc 2KB pade_compact.cpython-36.pyc 4KB linsol.cpython-38.pyc 1KB simulator.cpython-38.pyc 7KB simulator.cpython-36.pyc 7KB auxfunx.cpython-37.pyc 6KB pade_compact.cpython-38.pyc 4KB con_diff.cpython-38.pyc 2KB bound_co.cpython-36.pyc 3KB time_integrators.cpython-36.pyc 4KB linsol.cpython-37.pyc 1KB linsol.cpython-36.pyc 1KB pade_compact.cpython-37.pyc 4KB bound_co.cpython-38.pyc 2KB __init__.cpython-37.pyc 121B __init__.cpython-38.pyc 134B __init__.cpython-36.pyc 118B IBM.cpython-38.pyc 1KB time_integrators.cpython-38.pyc 3KB IBM.cpython-36.pyc 1KB simulator.cpython-37.pyc 7KB time_integrators.cpython-37.pyc 3KB bound_co.py 3KB FluiDNS.py 5KB README.md 1KB
params.txt 3KB
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