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annotate +multiblock/DiffOp.m @ 533:06d1606d6977 feature/boundaryGroup

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Factor out function for handling a single boundary condition
author Jonatan Werpers <jonatan@werpers.com>
date Thu, 03 Aug 2017 17:45:06 +0200
parents b29f04ab5d99
children 55a7777dfcd0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
186
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1 classdef DiffOp < scheme.Scheme
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2 properties
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3 grid
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4 order
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5 diffOps
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6 D
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7 H
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8
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9 blockmatrixDiv
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10 end
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11
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12 methods
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13 function obj = DiffOp(doHand, grid, order, doParam)
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14 % doHand -- may either be a function handle or a cell array of
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15 % function handles for each grid. The function handle(s)
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16 % should be on the form do = doHand(grid, order, ...)
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17 % Additional parameters for each doHand may be provided in
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18 % the doParam input.
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19 % grid -- a multiblock grid
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20 % order -- integer specifying the order of accuracy
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21 % doParam -- may either be a cell array or a cell array of cell arrays
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22 % for each block. If it is a cell array with length equal
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23 % to the number of blocks then each element is sent to the
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24 % corresponding function handle as extra parameters:
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25 % doHand(..., doParam{i}{:}) Otherwise doParam is sent as
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26 % extra parameters to all doHand: doHand(..., doParam{:})
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27 default_arg('doParam', [])
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28
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29 [getHand, getParam] = parseInput(doHand, grid, doParam);
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30
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31 nBlocks = grid.nBlocks();
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32
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33 obj.order = order;
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34
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35 % Create the diffOps for each block
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36 obj.diffOps = cell(1, nBlocks);
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37 for i = 1:nBlocks
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38 h = getHand(i);
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39 p = getParam(i);
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40 if ~iscell(p)
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41 p = {p};
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42 end
201
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43 obj.diffOps{i} = h(grid.grids{i}, order, p{:});
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44 end
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45
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47 % Build the norm matrix
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48 H = cell(nBlocks, nBlocks);
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49 for i = 1:nBlocks
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50 H{i,i} = obj.diffOps{i}.H;
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51 end
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52 obj.H = blockmatrix.toMatrix(H);
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53
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54
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55 % Build the differentiation matrix
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56 obj.blockmatrixDiv = {grid.Ns, grid.Ns};
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57 D = blockmatrix.zero(obj.blockmatrixDiv);
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58 for i = 1:nBlocks
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59 D{i,i} = obj.diffOps{i}.D;
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60 end
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61
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62 for i = 1:nBlocks
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63 for j = 1:nBlocks
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64 intf = grid.connections{i,j};
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65 if isempty(intf)
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66 continue
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67 end
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68
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69
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70 [ii, ij] = obj.diffOps{i}.interface(intf{1}, obj.diffOps{j}, intf{2});
186
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71 D{i,i} = D{i,i} + ii;
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72 D{i,j} = D{i,j} + ij;
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73
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74 [jj, ji] = obj.diffOps{j}.interface(intf{2}, obj.diffOps{i}, intf{1});
186
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75 D{j,j} = D{j,j} + jj;
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76 D{j,i} = D{j,i} + ji;
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77 end
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78 end
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79 obj.D = blockmatrix.toMatrix(D);
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81
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82 function [getHand, getParam] = parseInput(doHand, grid, doParam)
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83 if ~isa(grid, 'multiblock.Grid')
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84 error('multiblock:DiffOp:DiffOp:InvalidGrid', 'Requires a multiblock grid.');
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85 end
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86
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87 if iscell(doHand) && length(doHand) == grid.nBlocks()
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88 getHand = @(i)doHand{i};
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89 elseif isa(doHand, 'function_handle')
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90 getHand = @(i)doHand;
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91 else
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92 error('multiblock:DiffOp:DiffOp:InvalidGridDoHand', 'doHand must be a function handle or a cell array of length grid.nBlocks');
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93 end
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94
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95 if isempty(doParam)
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96 getParam = @(i){};
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97 return
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98 end
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99
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100 if ~iscell(doParam)
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101 getParam = @(i)doParam;
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102 return
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103 end
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104
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105 % doParam is a non-empty cell-array
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106
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107 if length(doParam) == grid.nBlocks() && all(cellfun(@iscell, doParam))
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108 % doParam is a cell-array of cell-arrays
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109 getParam = @(i)doParam{i};
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110 return
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111 end
392
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112
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113 getParam = @(i)doParam;
186
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114 end
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115 end
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116
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117 function ops = splitOp(obj, op)
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118 % Splits a matrix operator into a cell-matrix of matrix operators for
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119 % each grid.
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120 ops = sparse2cell(op, obj.NNN);
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121 end
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122
532
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123 % Get a boundary operator specified by opName for the given boundary/BoundaryGroup
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124 function op = getBoundaryOperator(obj, opName, boundary)
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125 switch class(boundary)
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126 case 'cell'
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127 localOpName = [opName '_' boundary{2}];
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128 blockId = boundary{1};
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129 localOp = obj.diffOps{blockId}.(localOpName);
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130
529
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131 div = {obj.blockmatrixDiv{1}, size(localOp,2)};
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132 blockOp = blockmatrix.zero(div);
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133 blockOp{blockId,1} = localOp;
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134 op = blockmatrix.toMatrix(blockOp);
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135 return
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136 case 'multiblock.BoundaryGroup'
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137 op = [];
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138 for i = 1:length(boundary)
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139 op = [op, obj.getBoundaryOperator(opName, boundary{i})];
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140 end
529
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141 otherwise
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142 error('Unknown boundary indentifier')
344
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143 end
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144 end
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145
335
2d48db7151cf Bug fix in boundary condition.
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146 % Creates the closure and penalty matrix for a given boundary condition,
346
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147 % boundary -- the name of the boundary on the form {id,name} where
202
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148 % id is the number of a block and name is the name of a
529
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149 % boundary of that block example: {1,'s'} or {3,'w'}. It
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150 % can also be a boundary group
335
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151 function [closure, penalty] = boundary_condition(obj, boundary, type)
529
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152 switch class(boundary)
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153 case 'cell'
533
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154 [closure, penalty] = singleBoundaryCondition(obj, boundary, type);
529
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155 case 'multiblock.BoundaryGroup'
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156 error('not implemented')
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157 otherwise
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158 error('Unknown boundary indentifier')
346
33b2ef863519 Allowed muliple closure BCs in multiblock.DiffOp.
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159 end
210
39b7dcb2c724 multiblock: Implemented boundary conditions.
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160
186
1fc2eeb4f4e6 Moved multiblock grid to the multiblock package. Continued implementation. Added multiblock diffOp and removed some functions no longer needed.
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161 end
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162
533
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163 function [closure, penalty] = singleBoundaryCondition(obj, boundary, type)
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164 I = boundary{1};
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165 name = boundary{2};
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166
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167 % Get the closure and penaly matrices
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168 [blockClosure, blockPenalty] = obj.diffOps{I}.boundary_condition(name, type);
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169
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170 % Expand to matrix for full domain.
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171 div = obj.blockmatrixDiv;
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172 if ~iscell(blockClosure)
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173 temp = blockmatrix.zero(div);
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174 temp{I,I} = blockClosure;
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175 closure = blockmatrix.toMatrix(temp);
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176 else
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177 for i = 1:length(blockClosure)
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178 temp = blockmatrix.zero(div);
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179 temp{I,I} = blockClosure{i};
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180 closure{i} = blockmatrix.toMatrix(temp);
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181 end
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182 end
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183
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184 if ~iscell(blockPenalty)
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185 div{2} = size(blockPenalty, 2); % Penalty is a column vector
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186 p = blockmatrix.zero(div);
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187 p{I} = blockPenalty;
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188 penalty = blockmatrix.toMatrix(p);
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189 else
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190 for i = 1:length(blockPenalty)
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191 div{2} = size(blockPenalty{i}, 2); % Penalty is a column vector
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192 p = blockmatrix.zero(div);
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193 p{I} = blockPenalty{i};
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194 penalty{i} = blockmatrix.toMatrix(p);
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195 end
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diff changeset
196 end
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diff changeset
197 end
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diff changeset
198
202
e2fefb6f0746 multiblock.DiffOp: Fleshed out boundary_condition() a bit more
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diff changeset
199 function [closure, penalty] = interface(obj,boundary,neighbour_scheme,neighbour_boundary)
522
68178e013868 Add not-implemented-error for interface method in multiblock.DiffOp
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diff changeset
200 error('not implemented')
186
1fc2eeb4f4e6 Moved multiblock grid to the multiblock package. Continued implementation. Added multiblock diffOp and removed some functions no longer needed.
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201 end
1fc2eeb4f4e6 Moved multiblock grid to the multiblock package. Continued implementation. Added multiblock diffOp and removed some functions no longer needed.
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202
201
38f203f00f3a Exeendend tests of multiblock.DiffOp.
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diff changeset
203 % Size returns the number of degrees of freedom
186
1fc2eeb4f4e6 Moved multiblock grid to the multiblock package. Continued implementation. Added multiblock diffOp and removed some functions no longer needed.
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204 function N = size(obj)
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205 N = 0;
201
38f203f00f3a Exeendend tests of multiblock.DiffOp.
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206 for i = 1:length(obj.diffOps)
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diff changeset
207 N = N + obj.diffOps{i}.size();
186
1fc2eeb4f4e6 Moved multiblock grid to the multiblock package. Continued implementation. Added multiblock diffOp and removed some functions no longer needed.
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208 end
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209 end
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210 end
1fc2eeb4f4e6 Moved multiblock grid to the multiblock package. Continued implementation. Added multiblock diffOp and removed some functions no longer needed.
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211 end