-
Notifications
You must be signed in to change notification settings - Fork 2
/
desilination_util.lua
181 lines (137 loc) · 5.43 KB
/
desilination_util.lua
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
-- Create util namespace
util = util or {}
util.ns = util.ns or {}
function util.ns.parseParams()
local discType = util.GetParam("-type", "fv1", "Disc type", {"fv1","fv","fe","fecr","fvcr"})
local order, vorder, porder
if discType == "fe" or discType == "fv" then
order = util.GetParamNumber("-order", 2, "Order of velocity-space, pressure-order accordingly")
vorder = util.GetParamNumber("-vorder", order, "Order of velocity-space")
porder = util.GetParamNumber("-porder", vorder-1, "Order of pressure-space")
end
if discType == "fecr" or discType == "fvcr" then
order, vorder, porder = 1,1,0
end
if discType == "fv1" then
order, vorder, porder = 1,1,1
end
return discType, vorder, porder
end
function util.ns.CreateApproxSpace(dom, type, vorder, porder,corder)
-- create Approx Space w.r.t. to domain
local dim = dom:get_dim()
local approxSpace = ApproximationSpace(dom)
-- components of the velocity
local VelCmp, FctCmp
if dim == 1 then VelCmp = {"u"}; FctCmp = {"u", "p","c"}
elseif dim == 2 then VelCmp = {"u", "v"}; FctCmp = {"u", "v", "p"}
elseif dim == 3 then VelCmp = {"u", "v", "w"}; FctCmp = {"u", "v", "w", "p","c"}
else print("Choosen Dimension " .. dim .. "not supported. Exiting.") exit() end
-- distinguish types
if type == "fv1" then
approxSpace:add_fct(VelCmp , "Lagrange", 1)
approxSpace:add_fct("p" , "Lagrange", 1)
approxSpace:add_fct("c" , "Lagrange", corder)
elseif type == "fecr" or type == "fvcr" then
approxSpace:add_fct(VelCmp , "Crouzeix-Raviart",1)
approxSpace:add_fct("p" , "Piecewise-Constant")
approxSpace:add_fct("c" , "Lagrange", corder)
elseif type == "fv" or type == "fe" then
if porder==0 or corder==0 then
print("ns.createApproximationSpace: porder or corder 0 not valid for "..type); exit();
end
approxSpace:add_fct(VelCmp , "Lagrange", vorder)
approxSpace:add_fct("p" , "Lagrange", porder)
--approxSpace:add_fct("c" , "Lagrange", corder)
else
print("ns.createApproximationSpace: Disc Type '"..type.."' not supported."); exit();
end
return approxSpace, FctCmp, VelCmp
end
util.gmg = util.gmg or {}
function util.gmg.parseParams()
local numPreSmooth, numPostSmooth
if util.HasParamOption("-numSmooth") then
numPreSmooth = util.GetParamNumber("-numSmooth", 3, "Number pre/post-smoothing")
numPostSmooth = numPreSmooth
else
numPreSmooth = util.GetParamNumber("-numPreSmooth", 3, "Number pre-smoothing")
numPostSmooth = util.GetParamNumber("-numPostSmooth", 3, "Number post-smoothing")
end
local baseLev = util.GetParamNumber("-baseLev", 0, "Base level")
local cycle = util.GetParam("-cycle", "V", "gmg-cycle type", {"V","W","F"})
local bRAP = util.HasParamOption("-rap", "use rap product as level matrices")
return numPreSmooth, numPostSmooth, baseLev, cycle, bRAP
end
function util.gmg.create(approxSpace, smoother, numPreSmooth, numPostSmooth,
cycle, baseSolver, baseLev, bRAP)
local gmg = GeometricMultiGrid(approxSpace)
gmg:set_base_level(baseLev)
gmg:set_base_solver(baseSolver)
gmg:set_gathered_base_solver_if_ambiguous(true)
gmg:set_smoother(smoother)
gmg:set_cycle_type(cycle)
gmg:set_num_presmooth(numPreSmooth)
gmg:set_num_postsmooth(numPostSmooth)
gmg:set_rap(bRAP)
return gmg
end
util.smooth = util.smooth or {}
function util.smooth.parseParams()
local smooth = util.GetParam("-smooth", "cgs", "Smoother Type",
{"jac","ilu","ilut","egs","gs","sgs", "cgs"})
return smooth
end
function util.smooth.create(smooth)
local smoother = nil
if smooth == "ilu" then smoother = ILU();
elseif smooth == "ilut" then smoother = ILUT(1e-6);
elseif smooth == "egs" then smoother = ElementGaussSeidel(groupType);
elseif smooth == "cgs" then smoother = ComponentGaussSeidel(0.1, {"p"}, {0}, {1})
elseif smooth == "jac" then smoother = Jacobi(0.66);
elseif smooth == "gs" then smoother = GaussSeidel();
elseif smooth == "sgs" then smoother = SymmetricGaussSeidel();
else print("Smoother type '"..smooth.."' not found"); exit(); end
return smoother
end
util.solver = util.solver or {}
function util.solver.parseParams()
local solver = util.GetParam("-solver", "bicgstab", "Linear Solver Type",
{"ls","bicgstab","cg","lu","schur", "gmres"})
return solver
end
function util.solver.create(sol, precond)
local solver = nil
if sol == "ls" then
solver = LinearSolver();
if precond ~= nil then solver:set_preconditioner(precond) end
elseif sol == "bicgstab" then
solver = BiCGStab();
solver:set_min_orthogonality(1e-20)
--solver:set_restart(30)
if precond ~= nil then solver:set_preconditioner(precond) end
elseif sol == "gmres" then
solver = GMRES(10);
if precond ~= nil then solver:set_preconditioner(precond) end
elseif sol == "cg" then
solver = CG();
if precond ~= nil then solver:set_preconditioner(precond) end
elseif sol == "schur" then
local skeletonSolver = BiCGStab()
skeletonSolver:set_preconditioner(ILU())
--skeletonSolver:set_min_orthogonality(1e-15)
--skeletonSolver:set_restart(30)
skeletonSolver:set_convergence_check(ConvCheck(10000, 1e-12, 1e-2, true))
skeletonSolver = AgglomeratingSolver(SuperLU())
local schur = SchurComplement()
schur:set_dirichlet_solver(SuperLU())
schur:set_skeleton_solver(SchurInverseWithFullMatrix(skeletonSolver))
solver = LinearSolver()
solver:set_preconditioner(schur)
elseif sol == "lu" then
solver = LU()--SuperLU()
else
print("Solver not found."); exit();
end
return solver
end