ASE 167M - Runge-Kutta

ASE 167M - Runge-Kutta - [Z = [email protected]_derivs[t t dt z0 h =...

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clear all close all clc global g W Sw CDstar CLstar CD0 = 0.02; K = 0.07; h0 = 10000; g = 32.2; t0 = 0; W = 11000; CLstar = sqrt(CD0 / K); CDstar = 2 * CD0; Sw = 232; [temp, press, dens, sos] = atmos62(h0); V0 = sqrt(2 * W / (dens * Sw * CLstar)); gamma0 = -1 * CDstar / CLstar; x0 = 0; z0 = [x0; h0; V0; gamma0]; h = h0; t = t0; time(1) = t0; i = 0; dt = 2; htol = 1e-4;
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Unformatted text preview: [Z] = RK4(@gf_derivs, [t t + dt], z0); h = Z(2); if(h < -htol) dt = 0.5 * dt; if (dt < 1e-9) break end elseif(h > htol) t = t + dt; i = i + 1; time(i) = t; z0 = Z; x(i) = Z(1); H(i) = Z(2); V(i) = Z(3); gamma(i) = Z(4); end end e figure(1) plot(time, x) figure(2) plot(time, H) figure(3) plot(time, V) figure(4) plot(time, gamma) p...
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This note was uploaded on 09/18/2011 for the course ASE 167M taught by Professor Staff during the Spring '10 term at University of Texas.

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