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comparison +sbp/+implementations/d1_upwind_5.m @ 267:f7ac3cd6eeaa operator_remake

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Sparsified all implementation files, removed all matlab warnings, fixed small bugs on minimum grid points.
author Martin Almquist <martin.almquist@it.uu.se>
date Fri, 09 Sep 2016 14:53:41 +0200
parents bfa130b7abf6
children
comparison
equal deleted inserted replaced
266:bfa130b7abf6 267:f7ac3cd6eeaa
21 0.29e2/0.360e3 -0.17e2/0.32e2 -0.29e2/0.120e3 0.1309e4/0.1440e4; 21 0.29e2/0.360e3 -0.17e2/0.32e2 -0.29e2/0.120e3 0.1309e4/0.1440e4;
22 0.1e1/0.32e2 -0.11e2/0.360e3 -0.661e3/0.1440e4 -0.13e2/0.40e2; 22 0.1e1/0.32e2 -0.11e2/0.360e3 -0.661e3/0.1440e4 -0.13e2/0.40e2;
23 ]; 23 ];
24 24
25 Qp(1:4,1:4)=Q_U; 25 Qp(1:4,1:4)=Q_U;
26 Qp(m-3:m,m-3:m)=flipud( fliplr(Q_U(1:4,1:4) ) )'; %%% This is different from standard SBP 26 Qp(m-3:m,m-3:m)=rot90( Q_U(1:4,1:4) ,2 )'; %%% This is different from standard SBP
27 27
28 Qm=-Qp'; 28 Qm=-Qp';
29 29
30 e_1=zeros(m,1);e_1(1)=1; 30 e_1=sparse(m,1);e_1(1)=1;
31 e_m=zeros(m,1);e_m(m)=1; 31 e_m=sparse(m,1);e_m(m)=1;
32 32
33 Dp=HI*(Qp-1/2*e_1*e_1'+1/2*e_m*e_m') ; 33 Dp=HI*(Qp-1/2*(e_1*e_1')+1/2*(e_m*e_m')) ;
34 34
35 Dm=HI*(Qm-1/2*e_1*e_1'+1/2*e_m*e_m') ; 35 Dm=HI*(Qm-1/2*(e_1*e_1')+1/2*(e_m*e_m')) ;
36 end 36 end