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outflow.m@ 9684

Last change on this file since 9684 was 9684, checked in by seroussi, 14 years ago
added initialization class
File size: 399 bytes

Line
1	function flag=outflow(md);
2	%OUTFLOW - flag nodes on outflux boundary
3	%
4	% Usage:
5	% flag=outflow(md);
6
7	A=md.segments(:,1);
8	B=md.segments(:,2);
9	Nx=-(md.y(A)-md.y(B));
10	Ny= md.x(A)-md.x(B);
11	Vx=(md.initialization.vx(A)+md.initialization.vx(B))/2;
12	Vy=(md.initialization.vy(A)+md.initialization.vy(B))/2;
13
14	%dot product
15	VdotN=Vx.Nx+Vy.Ny;
16
17	flag=zeros(md.numberofnodes,1);
18	flag(A(find(VdotN>0)))=1;

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