/usr/share/octave/packages/secs2d-0.0.8/ThDDGOX/ThDDGOXupdatelattice_temp.m is in octave-secs2d 0.0.8-5.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | function Tl = ThDDGOXupdatelattice_temp(mesh,Dnodes,Tl,Tn,Tp,n,p,...
kappa,Egap,tn,tp,...
twn0,twp0,twn1,twp1,n0,p0)
%%
%% Tl = ThDDGOXupdatelattice_temp(mesh,Dnodes,Tl,Tn,Tp,n,p,...
%% kappa,Egap,tn,tp,...
%% twn0,twp0,twn1,twp1,n0,p0)
%% This file is part of
%%
%% SECS2D - A 2-D Drift--Diffusion Semiconductor Device Simulator
%% -------------------------------------------------------------------
%% Copyright (C) 2004-2006 Carlo de Falco
%%
%%
%%
%% SECS2D is free software; you can redistribute it and/or modify
%% it under the terms of the GNU General Public License as published by
%% the Free Software Foundation; either version 2 of the License, or
%% (at your option) any later version.
%%
%% SECS2D is distributed in the hope that it will be useful,
%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
%% GNU General Public License for more details.
%%
%% You should have received a copy of the GNU General Public License
%% along with SECS2D; If not, see <http://www.gnu.org/licenses/>.
Nnodes = columns(mesh.p);
Nelements = columns(mesh.t);
Varnodes = setdiff(1:Nnodes,Dnodes);
alpha = kappa*ones(Nelements,1);
gamma = Tl.^(-4/3);
eta = ones (Nnodes,1);
L = Uscharfettergummel3(mesh,alpha,gamma,eta,0);
MASS_LHSn = Ucompmass2(mesh,1.5*n./twn1,1./twn0);
MASS_LHSp = Ucompmass2(mesh,1.5*p./twp1,1./twp0);
LHS = L+MASS_LHSn+MASS_LHSp;
denom = (tp*(n+sqrt(n0.*p0))+tn*(p+sqrt(n0.*p0)));
U = (p.*n-p0.*n0)./denom;
RHS1 = Ucompconst(mesh,(Egap+1.5*(Tn + Tp)).*U,ones(Nelements,1));
RHS2n = Ucompconst(mesh,1.5*n.*Tn./twn1,1./twn0);
RHS2p = Ucompconst(mesh,1.5*p.*Tp./twp1,1./twp0);
RHS = RHS1 + RHS2n + RHS2p;
Tl(Varnodes) = LHS(Varnodes,Varnodes) \...
(RHS(Varnodes) - LHS(Varnodes,Dnodes)*Tl(Dnodes));
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