你已经派生过 gprMax
镜像自地址
https://gitee.com/sunhf/gprMax.git
已同步 2025-08-07 04:56:51 +08:00
Added basic subgrid water cylinder example
这个提交包含在:
98
examples/subgrids/cylinder_fs.py
普通文件
98
examples/subgrids/cylinder_fs.py
普通文件
@@ -0,0 +1,98 @@
|
||||
"""Cylinder in freespace
|
||||
|
||||
This example model is a basic demonstration of how to use subgrids.
|
||||
|
||||
The geometry is 3D (required for any use of subgrids) and is of a water-filled
|
||||
cylindrical object in freespace. The subgrid encloses the cylinderical object
|
||||
using a fine spatial discretisation (1mm), and a courser spatial discretisation
|
||||
(5mm) is used in the rest of the model (main grid). A simple Hertzian dipole
|
||||
source is used with a waveform shaped as the first derivative of a gaussian.
|
||||
"""
|
||||
|
||||
from pathlib import Path
|
||||
import gprMax
|
||||
from gprMax.materials import calculate_water_properties
|
||||
|
||||
# File path - used later to specify name of output files
|
||||
fn = Path(__file__)
|
||||
parts = fn.parts
|
||||
|
||||
# Subgrid spatial discretisation in x, y, z directions
|
||||
dl_sg = 1e-3
|
||||
|
||||
# Subgrid ratio - must always be an odd integer multiple
|
||||
ratio = 5
|
||||
dl = dl_sg * ratio
|
||||
|
||||
# Domain extent
|
||||
x = 0.500
|
||||
y = 0.500
|
||||
z = 0.500
|
||||
|
||||
# Time window
|
||||
tw = 6e-9
|
||||
|
||||
scene = gprMax.Scene()
|
||||
|
||||
title = gprMax.Title(name=fn.name)
|
||||
dxdydz = gprMax.Discretisation(p1=(dl, dl, dl))
|
||||
domain = gprMax.Domain(p1=(x, y, z))
|
||||
time_window = gprMax.TimeWindow(time=tw)
|
||||
|
||||
wf = gprMax.Waveform(wave_type='gaussiandot', amp=1, freq=1.5e9, id='mypulse')
|
||||
hd = gprMax.HertzianDipole(polarisation='z', p1=(0.205, 0.400, 0.250),
|
||||
waveform_id='mypulse')
|
||||
rx = gprMax.Rx(p1=(0.245, 0.400, 0.250))
|
||||
|
||||
pml = gprMax.PMLProps(formulation='HORIPML', thickness=10)
|
||||
|
||||
scene.add(title)
|
||||
scene.add(dxdydz)
|
||||
scene.add(domain)
|
||||
scene.add(time_window)
|
||||
scene.add(wf)
|
||||
scene.add(hd)
|
||||
scene.add(rx)
|
||||
scene.add(pml)
|
||||
|
||||
# Cylinder parameters
|
||||
c1 = (0.225, 0.250, 0.100)
|
||||
c2 = (0.225, 0.250, 0.400)
|
||||
r = 0.010
|
||||
sg1 = (c1[0] - r, c1[1] - r, c1[2])
|
||||
sg2 = (c2[0] + r, c2[1] + r, c2[2])
|
||||
|
||||
# Create subgrid
|
||||
subgrid = gprMax.SubGridHSG(p1=sg1, p2=sg2, ratio=ratio, id='sg')
|
||||
scene.add(subgrid)
|
||||
|
||||
# Create water material
|
||||
eri, er, tau, sig = calculate_water_properties()
|
||||
water = gprMax.Material(er=eri, se=sig, mr=1, sm=0, id='water')
|
||||
subgrid.add(water)
|
||||
# water = gprMax.AddDebyeDispersion(poles=1, er_delta=[er - eri], tau=[tau], material_ids=['water'])
|
||||
# subgrid.add(water)
|
||||
|
||||
# Add cylinder to subgrid
|
||||
cylinder = gprMax.Cylinder(p1=c1, p2=c2, r=r, material_id='water')
|
||||
subgrid.add(cylinder)
|
||||
|
||||
# Create some geometry views for both subgrid and main grid
|
||||
gvsg = gprMax.GeometryView(p1=sg1, p2=sg2, dl=(dl_sg, dl_sg, dl_sg),
|
||||
filename=fn.with_suffix('').parts[-1] + '_sg',
|
||||
output_type='n')
|
||||
subgrid.add(gvsg)
|
||||
|
||||
gv1 = gprMax.GeometryView(p1=(0, 0, 0), p2=(x, y, z), dl=(dl, dl, dl),
|
||||
filename=fn.with_suffix('').parts[-1],
|
||||
output_type='n')
|
||||
scene.add(gv1)
|
||||
|
||||
# Create some snapshots of entire domain
|
||||
# for i in range(5):
|
||||
# s = gprMax.Snapshot(p1=(0, 0, 0), p2=(x, y, z), dl=(dl, dl, dl),
|
||||
# time=(i + 0.5) * 1e-9,
|
||||
# filename=fn.with_suffix('').parts[-1] + '_' + str(i + 1))
|
||||
# scene.add(s)
|
||||
|
||||
gprMax.run(scenes=[scene], n=1, geometry_only=False, outputfile=fn, subgrid=True, autotranslate=True)
|
在新工单中引用
屏蔽一个用户