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annotate +sbp/D1Upwind.m @ 1037:2d7ba44340d0 feature/burgers1d

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Pass scheme specific parameters as cell array. This will enabale constructDiffOps to be more general. In addition, allow for schemes returning function handles as diffOps, which is currently how non-linear schemes such as Burgers1d are implemented.
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Fri, 18 Jan 2019 09:02:02 +0100
parents e1d11b6a68d8
children 111fcbcff2e9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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252
07fa0d6a05bb Renamned class files and added nonequidistant operators.
Martin Almquist <martin.almquist@it.uu.se>
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1 classdef D1Upwind < sbp.OpSet
07fa0d6a05bb Renamned class files and added nonequidistant operators.
Martin Almquist <martin.almquist@it.uu.se>
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2 properties
302
f39f98b59f61 Fixes in Upwind operators and Euler1D scheme.
Jonatan Werpers <jonatan@werpers.com>
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3 Dp, Dm % SBP operator approximating first derivative
263
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Martin Almquist <martin.almquist@it.uu.se>
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4 H % Norm matrix
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5 HI % H^-1
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Martin Almquist <martin.almquist@it.uu.se>
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6 e_l % Left boundary operator
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7 e_r % Right boundary operator
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Martin Almquist <martin.almquist@it.uu.se>
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8 m % Number of grid points.
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9 h % Step size
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10 x % grid
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11 borrowing % Struct with borrowing limits for different norm matrices
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12 end
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13
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14 methods
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15 function obj = D1Upwind(m,lim,order)
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Jonatan Werpers <jonatan@werpers.com>
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16
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17 x_l = lim{1};
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18 x_r = lim{2};
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19 L = x_r-x_l;
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20 obj.h = L/(m-1);
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21 obj.x = linspace(x_l,x_r,m)';
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22
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23 switch order
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24 case 2
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25 [obj.H, obj.HI, obj.Dp, obj.Dm, obj.e_l, obj.e_r] = ...
263
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26 sbp.implementations.d1_upwind_2(m,obj.h);
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27 case 3
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28 [obj.H, obj.HI, obj.Dp, obj.Dm, obj.e_l, obj.e_r] = ...
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29 sbp.implementations.d1_upwind_3(m,obj.h);
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30 case 4
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31 [obj.H, obj.HI, obj.Dp, obj.Dm, obj.e_l, obj.e_r] = ...
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32 sbp.implementations.d1_upwind_4(m,obj.h);
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33 case 5
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34 [obj.H, obj.HI, obj.Dp, obj.Dm, obj.e_l, obj.e_r] = ...
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35 sbp.implementations.d1_upwind_5(m,obj.h);
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36 case 6
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37 [obj.H, obj.HI, obj.Dp, obj.Dm, obj.e_l, obj.e_r] = ...
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38 sbp.implementations.d1_upwind_6(m,obj.h);
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39 case 7
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40 [obj.H, obj.HI, obj.Dp, obj.Dm, obj.e_l, obj.e_r] = ...
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41 sbp.implementations.d1_upwind_7(m,obj.h);
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42 case 8
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43 [obj.H, obj.HI, obj.Dp, obj.Dm, obj.e_l, obj.e_r] = ...
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44 sbp.implementations.d1_upwind_8(m,obj.h);
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45 case 9
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46 [obj.H, obj.HI, obj.Dp, obj.Dm, obj.e_l, obj.e_r] = ...
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47 sbp.implementations.d1_upwind_9(m,obj.h);
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48 otherwise
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49 error('Invalid operator order %d.',order);
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50 end
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51
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52 obj.m = m;
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53 obj.borrowing = [];
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54
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55 end
441
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56
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57 function str = string(obj)
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58 str = [class(obj) '_' num2str(obj.order)];
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59 end
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60 end
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