Tibeuleu/KozaiLidov
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play with IC

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This commit is contained in:
Thibault Barnouin
2021-11-05 18:35:51 +01:00
parent fff1832e61
commit 24e544c43a
5 changed files with 7 additions and 7 deletions
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12
main.py
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@@ -13,8 +13,8 @@ globals()['au'] = 1.5e11 #Astronomical unit in m
def main():
#initialisation
m = np.array([1, 1, 0.1])*Ms # Masses in Solar mass
mu = m[0]*m[1]/(m[0]+m[1])
a = np.array([1., 1., 5.])*au # Semi-major axis in astronomical units
e = np.array([0., 0., 1./4.]) # Eccentricity
psi = np.array([0., 0., 80.])*np.pi/180. # Inclination of the orbital plane in degrees
x1 = np.array([-1., 0., 0.])*a[0]
@@ -22,19 +22,19 @@ def main():
x3 = np.array([np.cos(psi[2]), 0., np.sin(psi[2])])*a[2]
q = np.array([x1, x2, x3])
v1 = np.array([0., -np.sqrt(G*mu/np.sqrt(np.sum(x1**2))), 0])
v2 = np.array([0., np.sqrt(G*mu/np.sqrt(np.sum(x2**2))), 0.])
v1 = np.array([0., -1./3*np.sqrt(G*(m[0]+m[1])*a[0]*(1-e[0]**2)*(1+e[0])**2/np.sum(q[0]**2)), 0.])
v2 = np.array([0., 1./3*np.sqrt(G*(m[0]+m[1])*a[1]*(1-e[1]**2)*(1+e[1])**2/np.sum(q[1]**2)), 0.])
v3 = np.array([0., np.sqrt(G*(m[0]+m[1])*(2./np.sqrt(np.sum(x3**2))-1./a[2])), 0.])
v = np.array([v1, v2, v3])
bodylist = []
for i in range(m.shape[0]):
for i in range(3):
bodylist.append(Body(m[i], q[i], v[i]))
dyn_syst = System(bodylist)
dyn_syst.COMShift()
duration, step = 0.5*3e7, 1e1
E, L = frogleap(duration, step, dyn_syst, recover_param=True)#, display=True)
duration, step = 10*3e7, 5e5
E, L = frogleap(duration, step, dyn_syst, recover_param=True, display=True)
fig1 = plt.figure(figsize=(30,15))
ax1 = fig1.add_subplot(111)