Alpha Disc Model in Accretion Disks Hongyu Gong Xiamen University.

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Presentation transcript:

Alpha Disc Model in Accretion Disks Hongyu Gong Xiamen University

1. Background 2. Analysis 3. Numerical method 4. Conclusion

Accretion Disks An accretion disc is a structure (often a circumstellar disk) formed by diffuse material in orbital motion around a massive central body.

Accretion Disks

α-Disc Model By using the equation of hydrostatic equilibrium, combined with conservation of angular momentum and assuming that the disc is thin, the equations of disk structure may be solved in terms of the parameter.

Equations

Parameters and Boundary Conditions

Numerical Method

f1(p,Fz,T)=-3*kes*p*Fz/(4*c*a*T*T*T); f2(p,T)=alpha*(p*kb*T/(u*mp)+1/3*a*T*T*T* T)*W*g; f3(p,Fz,T)= p*u*mp/(T*kb)*(kes*Fz/c- W*W*z)+3*kes*p*p*Fz/(4*c*a*T*T*T*T);

Numerical Method

Solutions T-z

Solutions rho-z

Solutions Fz-z

Solutions

Thank you!