Gerris¶
简介¶
Gerris是求解描述流体流动的偏微分方程的开源软件。
Gerris基本使用¶
创建一个目录,并在该目录下编写如下vorticity.gfs文件:
1 2 GfsSimulation GfsBox GfsGEdge {} {
GfsTime { end = 50 }
GfsRefine 6
GfsInit {} {
U = (0.5 - rand()/(double)RAND_MAX)
V = (0.5 - rand()/(double)RAND_MAX)
}
GfsOutputTime { istep = 10 } stdout
GfsOutputProjectionStats { istep = 10 } stdout
}
GfsBox {}
1 1 right
1 1 top
在该目录下编写如下gerristest.slurm运行脚本:
#!/bin/bash
#SBATCH -J test
#SBATCH -p small
#SBATCH -o %j.out
#SBATCH -e %j.err
#SBATCH -n 1
#SBATCH --cpus-per-task=1
IMAGE_PATH=/lustre/share/img/x86/gerris/gerris.sif
singularity exec $IMAGE_PATH gerris2D vorticity.gfs
提交脚本:
sbatch gerristest.slurm
运行结束后可在.out文件中得到如下结果(部分):
step: 0 t: 0.00000000 dt: 1.888931e-02 cpu: 0.01000000 real: 0.01103200
Approximate projection
niter: 3
residual.bias: -4.374e-18 2.233e-18
residual.first: 3.751e-01 4.525e-05 20
residual.second: 4.633e-01 6.034e-05 20
residual.infty: 1.419e+00 4.128e-04 15
step: 10 t: 0.30436678 dt: 3.947231e-02 cpu: 0.18000000 real: 0.20647300
MAC projection before after rate
niter: 2
residual.bias: 1.746e-19 9.098e-20
residual.first: 2.313e-02 9.074e-05 16
residual.second: 3.342e-02 1.171e-04 17
residual.infty: 2.310e-01 5.609e-04 20
Approximate projection
niter: 2
residual.bias: -5.667e-19 2.551e-19
residual.first: 1.873e-02 5.536e-05 18
residual.second: 2.423e-02 7.055e-05 19
residual.infty: 1.063e-01 3.206e-04 18
参考资料¶
最后更新:
2024 年 11 月 22 日