Isothermal Simualtions

[2. Movies | r_out=3a sim | r_out=10a sim | r_out=100a sim]

1. Introduction

This page has links to several movies from simualtions with different simulation volume: r_out=3a, 10a, and 100a, where r_out is the radius of the simulation boundary and a is the semi-major axis.

Both winds are assumed to be isothermal at T=35,000K and coast without any net external forces.The masses of individual wind particles in the following simulations are 6x10^-14M_sun and 1.2x10^-14M_sun for the primary and secondary winds, respectively. But, the mass is chosen so as to have negligible self-gravity. So, the exact values of particle masses are not important. Only the mass ratio (5:1) between the individual particles in the primary and secondary winds matters.

2. Movies

The following movies are from three simulations with different simulation boundary. I've first done an r_out=3a simulation as a test simulation (to see if my code works for colliding wind simulations). As the result seemed fine, I (we) decided to go further. I've performed an r_out=10a simulation, expanding the simulation boundary by a factor of ~3 and using the number of particles about twice as many as in the r_out=3a simulation. I've also done a simuation with r_out=100a for visualizing the structure of the colliding winds in a large volume.

In the following simulations, the binary orbit is on the x-y plane and the major axis of the orbit is along the x-axis (+x-axis is in the direction of the apastron). At t=0, the system is at the apastron. The density shown in movies is in cgs units. Times are in units of the orbital period.

r_out=3a simualtion

• The density distribution on the orbital plane (the x-y plane; the left panel) and on the plane perpendicular to the orbital plane and through the major axis (y=0; the right panel) over a full orbit.

  GIF animation (265MB); Quick Time movie (132MB)

• The density distribution on the orbital plane (the x-y plane; the left panel) and along the major axis (x=0; the right panel) over a full orbit.

  GIF animation (82MB); Quick Time movie (46MB)

 

r_out=10a simualtion

• The density distribution on the orbital plane (the x-y plane; the left panel) and on the plane perpendicular to the orbital plane and through the major axis (y=0; the right panel).

A full orbit movie from t=1 to t=2 (from the second apastron passage to the third one, including the second periastron passage).

GIF animation (122MB); Quick Time movie (56MB)

A full orbit movie starting at ~500 days befor the first periastron passage.

GIF animation (122MB); Quick Time movie (55MB)

A movie that covers the whole run (t=0-2).

GIF animation (239MB); Quick Time movie (109MB)

• The density distribution on the orbital plane (the x-y plane; the left panel) and along the major axis (x=0; the right panel).

A full orbit movie from t=1 to t=2 (from the second apastron passage to the third one, including the second periastron passage).

GIF animation (39MB); Quick Time movie (20MB)

A full orbit movie starting at ~500 days befor the first periastron passage.

GIF animation (39MB); Quick Time movie (19MB)

A movie that covers the whole run (t=0-2).

GIF animation (76MB); Quick Time movie (39MB)

 

r_out=100a simualtion

• The density distribution on the orbital plane (the x-y plane; the left panel) and on the plane perpendicular to the orbital plane and through the major axis (y=0; the right panel).

A full orbit movie from t=3 to t=4 (from the fourth apastron passage to the fifth one, including the fourth periastron passage).

GIF animation (121MB); Quick Time movie (22MB)

A movie that covers the whole run (t=0-4).

GIF animation (406MB); Quick Time movie (74MB)

• The density distribution on the orbital plane (the x-y plane; the left panel) and along the major axis (x=0; the right panel).

A full orbit movie from t=3 to t=4 (from the fourth apastron passage to the fifth one, including the fourth periastron passage).

GIF animation (40MB); Quick Time movie (10MB)

A movie that covers the whole run (t=0-4).

GIF animation (137MB); Quick Time movie (35MB)