Vignesh Sitaraman
00c8a9378e
modified: anasen_fem/scalars.dat modified: anasen_fem/scalars.dat.names modified: anasen_fem/wires2d.sif modified: anasen_fem/wires_gmsh2d_bc.py included IC and hot needle to simulations
229 lines
7.7 KiB
Python
Executable File
229 lines
7.7 KiB
Python
Executable File
import numpy as np
|
|
import gmsh,sys
|
|
|
|
# --- Configuration Flags ---
|
|
include_ic_wires = True
|
|
include_needle = True
|
|
|
|
gmsh.initialize()
|
|
gmsh.model.add("adaptive_mesh")
|
|
gmsh.option.setNumber('General.NumThreads', 10)
|
|
#gmsh.option.setNumber("Mesh.Adapt.MaxNumberOfElements", 200000)
|
|
#gmsh.option.setNumber("Mesh.Adapt.MaxNumberOfNodes", 200000)
|
|
#gmsh.option.setNumber("Mesh.Adapt.MaxIter",5)
|
|
#gmsh.option.setNumber("Mesh.MeshSizeMin", 5e-3)
|
|
#gmsh.option.setNumber("Mesh.MeshSizeMax", 10.0)
|
|
gmsh.option.setNumber("Geometry.Tolerance", 4e-2)
|
|
#gmsh.option.setNumber("Mesh.MeshSizeExtendFromBoundary", 0)
|
|
|
|
lc = 0.04
|
|
#z_loc = -178.3
|
|
|
|
if len(sys.argv) < 2:
|
|
print("Usage: python3 wires_gmsh2d_bc.py <z_locus in mm>")
|
|
quit()
|
|
|
|
z_loc = float(sys.argv[1])
|
|
|
|
k=(2*np.pi/24.)
|
|
|
|
#1 needle, 24 ic1, 24 ic2, 48 guard wires, 24 anodes, 24 cathodes
|
|
|
|
#needle at plane 1 at -zmax/2
|
|
xarr_needle = np.array([0])
|
|
yarr_needle = np.array([0])
|
|
|
|
#ic1 wires, plane 1 at -zmax/2
|
|
ki=2*np.pi/24.
|
|
xarr_i11 = np.array([23 * np.cos(ki * i) for i in range(24)])
|
|
yarr_i11 = np.array([23 * np.sin(ki * i) for i in range(24)])
|
|
|
|
#ic1 wires, plane 1 at -zmax/2
|
|
xarr_i21 = np.array([23 * np.cos(ki * i + ki/2.0) for i in range(24)])
|
|
yarr_i21 = np.array([23 * np.sin(ki * i + ki/2.0) for i in range(24)])
|
|
|
|
#guard wires, plane 1 at -zmax/2
|
|
kg=2*np.pi/48.
|
|
offsetg = -4*kg + 2*kg - np.pi/24 #-pi/4
|
|
xarrg_1 = np.array([32*np.cos(kg*i+offsetg) for i in np.arange(0,48)])
|
|
yarrg_1 = np.array([32*np.sin(kg*i+offsetg) for i in np.arange(0,48)])
|
|
|
|
#anodes, plane 1 at -zmax/2
|
|
k=-2*np.pi/24.
|
|
offset = 6*k + 3*k #-pi/2
|
|
xarra_1 = np.array([37*np.cos(k*i+offset) for i in np.arange(0,24)])
|
|
yarra_1 = np.array([37*np.sin(k*i+offset) for i in np.arange(0,24)])
|
|
|
|
#cathodes, plane 1 at -zmax/2
|
|
kc=2*np.pi/24.
|
|
offsetc = -4*kc + 2*kc - np.pi/24 #-pi/4
|
|
xarrc_1 = np.array([42*np.cos(kc*i+offsetc) for i in np.arange(0,24)])
|
|
yarrc_1 = np.array([42*np.sin(kc*i+offsetc) for i in np.arange(0,24)])
|
|
|
|
#needle at plane 2 at zmax/2
|
|
xarr_needle_2 = np.array([0])
|
|
yarr_needle_2 = np.array([0])
|
|
|
|
# #ic1 wires, plane 2 at zmax/2
|
|
xarr_i12 = np.array([23 * np.cos(ki * i) for i in range(24)])
|
|
yarr_i12 = np.array([23 * np.sin(ki * i) for i in range(24)])
|
|
|
|
# #ic2 wires, plane 2 at zmax/2
|
|
xarr_i22 = np.array([23 * np.cos(ki * i + ki/2.0) for i in range(24)])
|
|
yarr_i22 = np.array([23 * np.sin(ki * i + ki/2.0) for i in range(24)])
|
|
|
|
#guard wires, plane 2 at +zmax/2
|
|
offsetg = offsetg-3*kg
|
|
xarrg_2 = np.array([32*np.cos(kg*i+offsetg) for i in np.arange(0,48)])
|
|
yarrg_2 = np.array([32*np.sin(kg*i+offsetg) for i in np.arange(0,48)])
|
|
|
|
#anodes, plane 2 at +zmax/2
|
|
offset = offset-3*k
|
|
xarra_2 = np.array([37*np.cos(k*i+offset) for i in np.arange(0,24)])
|
|
yarra_2 = np.array([37*np.sin(k*i+offset) for i in np.arange(0,24)])
|
|
|
|
#cathodes, plane2 at +zmax/2
|
|
offsetc = offsetc-3*kc
|
|
xarrc_2 = np.array([42*np.cos(kc*i+offsetc) for i in np.arange(0,24)])
|
|
yarrc_2 = np.array([42*np.sin(kc*i+offsetc) for i in np.arange(0,24)])
|
|
|
|
direction_needle_x = xarr_needle_2 - xarr_needle
|
|
direction_needle_y = yarr_needle_2 - yarr_needle
|
|
|
|
direction_ic1_x = xarr_i12 - xarr_i11
|
|
direction_ic1_y = yarr_i12 - yarr_i11
|
|
|
|
direction_ic2_x = xarr_i22 - xarr_i21
|
|
direction_ic2_y = yarr_i22 - yarr_i21
|
|
|
|
direction_guard_x = xarrg_2 - xarrg_1
|
|
direction_guard_y = yarrg_2 - yarrg_1
|
|
|
|
direction_anodes_x = xarra_2 - xarra_1
|
|
direction_anodes_y = yarra_2 - yarra_1
|
|
|
|
direction_cathodes_x = xarrc_2 - xarrc_1
|
|
direction_cathodes_y = yarrc_2 - yarrc_1
|
|
|
|
t = (z_loc+178.3)/(2*178.3) #z=-178.3 is 0, z=+178.3 is 1
|
|
|
|
xloc_needle = xarr_needle + t*direction_needle_x
|
|
yloc_needle = yarr_needle + t*direction_needle_y
|
|
xloc_i1 = xarr_i11 + t*direction_ic1_x
|
|
yloc_i1 = yarr_i11 + t*direction_ic1_y
|
|
xloc_i2 = xarr_i21 + t*direction_ic2_x
|
|
yloc_i2 = yarr_i21 + t*direction_ic2_y
|
|
xloc_g = xarrg_1 + t*direction_guard_x
|
|
yloc_g = yarrg_1 + t*direction_guard_y
|
|
xloc_a = xarra_1 + t*direction_anodes_x
|
|
yloc_a = yarra_1 + t*direction_anodes_y
|
|
xloc_c = xarrc_1 + t*direction_cathodes_x
|
|
yloc_c = yarrc_1 + t*direction_cathodes_y
|
|
|
|
# wire_radius_a = 0.018 #mm
|
|
# wire_radius_c = 0.0762 #mm
|
|
# wire_radius_g = 0.0762 #mm
|
|
wire_radius = 0.254 #mm
|
|
needle=[]
|
|
ic1_wires = []
|
|
ic2_wires = []
|
|
guard_wires = []
|
|
anode_wires = []
|
|
cathode_wires = []
|
|
iw1_tags = [(3,i) for i in range(24)]
|
|
iw2_tags = [(3,i+24) for i in range(24)]
|
|
gw_tags = [(3,i+48) for i in range(48)]
|
|
aw_tags = [(3,i) for i in range(24)]
|
|
cw_tags = [(3,i+24) for i in range(24)]
|
|
|
|
#for i,[xa,ya,xc,yc] in enumerate(zip(xarra_1,yarra_1,xarrc_1,yarrc_1)):
|
|
#create Hot Needle (1 total)
|
|
for i, (xn, yn) in enumerate(zip(xloc_needle, yloc_needle)):
|
|
if include_needle:
|
|
ndisk = gmsh.model.occ.addDisk(xn, yn, 0, wire_radius, wire_radius)
|
|
needle.append(ndisk)
|
|
|
|
#create Guard Wires (48 total)
|
|
for i, (xg, yg) in enumerate(zip(xloc_g, yloc_g)):
|
|
gdisk = gmsh.model.occ.addDisk(xg, yg, 0, wire_radius, wire_radius)
|
|
guard_wires.append(gdisk)
|
|
|
|
#create IC Anode and Cathode Wires (24 total each)
|
|
for i, (xa, ya, xc, yc) in enumerate(zip(xloc_a, yloc_a, xloc_c, yloc_c)):
|
|
adisk = gmsh.model.occ.addDisk(xa, ya, 0, wire_radius, wire_radius)
|
|
cdisk = gmsh.model.occ.addDisk(xc, yc, 0, wire_radius, wire_radius)
|
|
anode_wires.append(adisk)
|
|
cathode_wires.append(cdisk)
|
|
|
|
# Place IC wires only if flag is True
|
|
if include_ic_wires:
|
|
i1disk = gmsh.model.occ.addDisk(xloc_i1[i], yloc_i1[i], 0, wire_radius, wire_radius)
|
|
i2disk = gmsh.model.occ.addDisk(xloc_i2[i], yloc_i2[i], 0, wire_radius, wire_radius)
|
|
ic1_wires.append(i1disk)
|
|
ic2_wires.append(i2disk)
|
|
|
|
anasen_barrel = gmsh.model.occ.addDisk(0,0,0,500,500)
|
|
#gmsh.model.occ.synchronize()
|
|
#gmsh.model.mesh.embed(1,anode_wires+cathode_wires,2,anasen_barrel)
|
|
|
|
gmsh.option.setNumber("Geometry.Tolerance", 1e-6)
|
|
gmsh.option.setNumber("Geometry.OCCFixDegenerated", 1)
|
|
gmsh.model.occ.synchronize()
|
|
|
|
# --- Surface Extraction ---
|
|
def get_surfs(disks):
|
|
surfs = []
|
|
for d in disks:
|
|
surfs += [s[1] for s in gmsh.model.getBoundary([(2,d)], oriented=False) if s[0] == 1]
|
|
return surfs
|
|
|
|
needle_surfs = get_surfs(needle) if include_needle else []
|
|
gwire_surfs = get_surfs(guard_wires)
|
|
awire_surfs = get_surfs(anode_wires)
|
|
cwire_surfs = get_surfs(cathode_wires)
|
|
i1wire_surfs = get_surfs(ic1_wires) if include_ic_wires else []
|
|
i2wire_surfs = get_surfs(ic2_wires) if include_ic_wires else []
|
|
|
|
|
|
all_active_wire_surfs = needle_surfs + gwire_surfs + awire_surfs + cwire_surfs + i1wire_surfs + i2wire_surfs
|
|
gmsh.model.mesh.embed(1, all_active_wire_surfs, 2, anasen_barrel)
|
|
|
|
# f1 = gmsh.model.mesh.field.add("Distance")
|
|
# gmsh.model.mesh.field.setNumbers(f1, "CurvesList", all_active_wire_surfs)
|
|
|
|
# f2 = gmsh.model.mesh.field.add("Threshold")
|
|
# gmsh.model.mesh.field.setNumber(f2, "InField", f1)
|
|
# gmsh.model.mesh.field.setNumber(f2, "SizeMin", 0.1) # Fine mesh near wires
|
|
# gmsh.model.mesh.field.setNumber(f2, "SizeMax", 10.0) # Large mesh in empty space
|
|
# gmsh.model.mesh.field.setNumber(f2, "DistMin", 1.0) # Apply SizeMin within 1mm
|
|
# gmsh.model.mesh.field.setNumber(f2, "DistMax", 20.0) # Transition to SizeMax by 20mm
|
|
|
|
# gmsh.model.mesh.field.setAsBackgroundMesh(f2)
|
|
|
|
|
|
# --- Physical Groups ---
|
|
# Needle
|
|
if include_needle:
|
|
gmsh.model.addPhysicalGroup(1, needle_surfs, tag=1, name="hot_needle")
|
|
|
|
# IC Wires
|
|
if include_ic_wires:
|
|
gmsh.model.addPhysicalGroup(1, i1wire_surfs, tag=2, name="ic_wire_1")
|
|
gmsh.model.addPhysicalGroup(1, i2wire_surfs, tag=3, name="ic_wire_2")
|
|
|
|
# Proportional Counter Wires
|
|
gmsh.model.addPhysicalGroup(1, gwire_surfs, tag=10, name="guard_wires")
|
|
gmsh.model.addPhysicalGroup(1, awire_surfs, tag=20, name="anode_wires")
|
|
gmsh.model.addPhysicalGroup(1, cwire_surfs, tag=30, name="cathode_wires")
|
|
|
|
# Gas Volume (2D)
|
|
gmsh.model.addPhysicalGroup(2, [anasen_barrel], tag=13, name="gas")
|
|
|
|
gmsh.option.setNumber("Mesh.Algorithm", 6)
|
|
|
|
gmsh.model.mesh.generate(dim=2)
|
|
gmsh.model.mesh.refine()
|
|
gmsh.write("wires2d.msh")
|
|
#gmsh.fltk.run()
|
|
gmsh.finalize()
|