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Alpha Disc Model in Accretion Disks

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. .

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Alpha Disc Model in Accretion Disks

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  1. Alpha Disc Model in Accretion Disks Hongyu Gong Xiamen University

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

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

  4. Accretion Disks

  5. 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.

  6. Equations

  7. Parameters and Boundary Conditions

  8. Numerical Method

  9. 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);

  10. Numerical Method

  11. Solutions • T-z

  12. Solutions • rho-z

  13. Solutions • Fz-z

  14. Solutions

  15. Thank you!

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