“simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN)...
-
Upload
jose-ignacio-santos-gutierrez -
Category
Documents
-
view
218 -
download
0
Transcript of “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN)...
![Page 1: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/1.jpg)
“simulaciones numericas de flujos astrofisicos”
Raga, Velazquez, Esquivel, Rodriguez (ICN)
Canto’ (IA)
![Page 2: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/2.jpg)
Ecuaciones de evolucion quimica
Ecuaciones de la dinamica de gases (2D, 3D)
Ecuaciones de transporte radiativo
![Page 3: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/3.jpg)
Dinamica de gases: metodos de diferencias/elementos finitos
metodo de MaCormack+corrector de flujo
metodos “upstream” (de Godunov):
-“flux vector splitting”
- Riemann linear
- Riemann exacto
- segundo orden espacial con “averaging functions”
mallas adaptativas
![Page 4: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/4.jpg)
![Page 5: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/5.jpg)
![Page 6: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/6.jpg)
Quimica:
“stiff equations” (metodo de Gear y variaciones)
Ecuaciones con tasas integradas
Paso temporal logaritmico
Metodos implicitos y semi-implicitos de bajo orden
![Page 7: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/7.jpg)
Transporte radiativo:
Metodos de caracteristicas cortas y largas
Metodo de ordenadas finitas
Metodos de montecarlo hibridos
![Page 8: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/8.jpg)
Codigos de malla adaptativa:
“coral”: HD 2D+quimica+transporte radiativo (1995)
“yguazu”: HD 2D/3D+quimica+transp. rad. (2000)
“walicxe”: HD 2D (2009)
![Page 9: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/9.jpg)
![Page 10: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/10.jpg)
Walicxe (f99 + MPI), des. por A. Esquivel
![Page 11: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/11.jpg)
![Page 12: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/12.jpg)
![Page 13: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/13.jpg)
“mira la cola de Mira”
Raga, Canto, De Colle, Esquivel, Kajdic,
Rodriguez, Velazquez
![Page 14: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/14.jpg)
Martin et al. 2007, Nature 448, 780
Tambien: espectro optico de baja resolucion (Halfa, [S II], [N II], [O II])
1516 +/-
128 A
2267 +/-
365 A
![Page 15: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/15.jpg)
![Page 16: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/16.jpg)
Interaccion de un viento isotropico con un medio ambiente en movimiento relativo
Wareing et al. 2007, ApJ 670, L125
Densidad columnar, Delta_t = 50000 yr
![Page 17: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/17.jpg)
3D simulation: latitude-dep. wind + streaming environment
Wind density : (A/r^2)*20-19 [cos(theta)]^(1/2)
Wind velocity : rho*v^2 is latitude-independent
Mass loss rate : 7.7e-7 solar masses/yr
Polar wind velocity: 10 km/s
Velocity of streaming environment: 130 km/s
Domain: (1.5,1.5,3.0)e18 cm, 128x128x256, 5-level grid
Polar axis: at 70 degrees from flow direction
![Page 18: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/18.jpg)
![Page 19: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/19.jpg)
![Page 20: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/20.jpg)
![Page 21: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/21.jpg)
![Page 22: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/22.jpg)
Conclusiones:
Modelo de viento estacionario, con “dependencia latitudinal”
Naturalmente produce la estructura de bow shock doble observado en el cometa de Mira
No es necesario tener un viento variable para obtener la estructura observada
![Page 23: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/23.jpg)
Frenado de la cola de Mira
![Page 24: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/24.jpg)
Quimica de la cola de Mira: ?????
![Page 25: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/25.jpg)
![Page 26: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/26.jpg)
![Page 27: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/27.jpg)
![Page 28: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/28.jpg)
![Page 29: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/29.jpg)
![Page 30: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/30.jpg)
![Page 31: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/31.jpg)
![Page 32: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/32.jpg)
![Page 33: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/33.jpg)
![Page 34: “simulaciones numericas de flujos astrofisicos” Raga, Velazquez, Esquivel, Rodriguez (ICN) Canto’ (IA)](https://reader036.fdocuments.us/reader036/viewer/2022062322/5665b4821a28abb57c921bb3/html5/thumbnails/34.jpg)