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annotate +scheme/bcSetup.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 b45a6dcb61ac
children 386ef449df51
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1 % Takes a diffOp and a cell array of boundary condition definitions.
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2 % Each bc is a struct with the fields
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3 % * type -- Type of boundary condition
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4 % * boundary -- Boundary identifier
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5 % * data -- A function_handle for a function which provides boundary data.(see below)
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6 % Also takes S_sign which modifies the sign of the penalty function, [-1,1]
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7 % Returns a closure matrix and a forcing function S.
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8 %
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9 % The boundary data function can either be a function of time or a function of time and space coordinates.
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10 % In the case where it only depends on time it should return the data as grid function for the boundary.
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11 % In the case where it also takes space coordinates the number of space coordinates should match the number of dimensions of the problem domain.
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12 % For example in the 2D case: f(t,x,y).
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13 function [closure, S] = bcSetup(diffOp, bcs, S_sign)
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14 default_arg('S_sign', 1);
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15 assertType(bcs, 'cell');
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16 assert(S_sign == 1 || S_sign == -1, 'S_sign must be either 1 or -1');
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18 [closure, penalties] = scheme.bc.closureSetup(diffOp, bcs);
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19 S = scheme.bc.forcingSetup(diffOp, penalties, bcs, S_sign);
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