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Added a small ODE test for fast slow heating
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Hemaditya Malla
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Oct 12, 2023
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| Original file line number | Diff line number | Diff line change |
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| import numpy as np | ||
| import matplotlib.pyplot as plt | ||
| from scipy.integrate import odeint | ||
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| data = np.loadtxt("powerDensity_power_density_pointVsTime.txt") | ||
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| def f(y, t, eta_f, eta_s, tau_vt): | ||
| E, Evt = y | ||
| jE = np.interp(t, data[:,0], data[:,1]) | ||
| return [eta_f*jE + Evt, eta_s*jE - Evt/tau_vt] | ||
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| dt = 1e-10 | ||
| tstart, tend = 0, 5e-6 | ||
| Nt = int((tend-tstart)/dt) | ||
| t = np.linspace(tstart, tend, Nt) | ||
| eta_f, eta_s, tau_vt = 0.3, 0.7, 20e-6 | ||
| E0 = 1e5/(1.4-1.0) | ||
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| solution = odeint(f, [E0, 0], t, args=(eta_f, eta_s, tau_vt)) | ||
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| plt.plot(t, solution[:,0], 'b-', label="Translation") | ||
| plt.plot(t, solution[:,1], 'g-', label="Vibration") | ||
| plt.legend() | ||
| plt.figure(2) | ||
| kb = 1.38e-23 | ||
| N = 2.4e25 | ||
| Tg = (solution[:,0]*(1.4-1))/(kb*N) | ||
| P = solution[:,0]*0.4 | ||
| plt.plot(t, Tg) | ||
| plt.show() | ||
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118 changes: 118 additions & 0 deletions
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programs/multipulse_2d/gasheating_ODE/powerDensity_power_density_pointVsTime.txt
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