27 lines
816 B
Matlab
Executable file
27 lines
816 B
Matlab
Executable file
function dydt = conuv(t,y,gas,mw) %#ok<INUSL>
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% CONUV ODE system for a constant-volume, adiabatic reactor.
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%
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% Function CONUV evaluates the system of ordinary differential
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% equations for an adiabatic, constant-volume,
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% zero-dimensional reactor. It assumes that the 'gas' object
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% represents a reacting ideal gas mixture.
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% Set the state of the gas, based on the current solution vector.
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set(gas, 'T', y(1), 'Rho', density(gas), 'Y', y(2:end));
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nsp = nSpecies(gas);
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% energy equation
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wdot = netProdRates(gas);
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tdot = - temperature(gas) * gasconstant * (enthalpies_RT(gas) - ones(nsp,1))' ...
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* wdot / (density(gas)*cv_mass(gas));
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% set up column vector for dydt
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dydt = [ tdot
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zeros(53,1) ];
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% species equations
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rrho = 1.0/density(gas);
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for i = 1:nsp
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dydt(i+1) = rrho*mw(i)*wdot(i);
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end
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