Simulating solar systems

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Simulating solar systems

Postby gonzo » Fri Sep 02, 2011 5:34 pm

Does anyone know about free/open software for space simulation? (preferably linux/unix)
I'm right now looking into accrete
From the accrete webpage:
Accrete is a physical simulation of solar system planet formation. This simulation works by modelling a dust cloud around a Sun-like star, injecting a series of masses which collect dust, and form planets by accretion.

Accrete is from the 70's and I've only found one later program, stargen:

While accrete gives you a text output of formed planets/planetoids and star, Stargen gives you a grafic printout where
planets from our solar system is borrowed to represent the simulated system.
Basically I'm looking for more modern versions for simulating planet/solar system formation.


Anyway,
this is what an accrete session will look like:
--------------------------------------------------

Code: Select all
~ $ cd accrete
~ $ ./accrete
.. Injecting protoplanet.
.. Injecting protoplanet.
.. Injecting protoplanet.
Collision between two planetesimals!
.. Injecting protoplanet.
.. Injecting protoplanet.
.. Injecting protoplanet.
Collision between two planetesimals!
.. Injecting protoplanet.

...

This gives you a textfile, New.System, which will look something like this:

SYSTEM CHARACTERISTICS
Mass of central star: 1.142 solar masses
Luminosity of central star: 1.899 (relative to the sun)
Total main sequence lifetime: 6013 million years
Current age of stellar system: 5109 million years
Radius of habitable ecosphere: 1.378 AU

Planet #1:
Distance from primary star (in A.U.): 0.344
Eccentricity of orbit: 0.001
Mass (in Earth masses): 0.049
Equatorial radius (in Km): 2365.1
Density (in g/cc): 5.271
Escape Velocity (in km/sec): 4.06
Smallest molecular weight retained: 48.17 (SO2)
Surface acceleration (in cm/sec2): 348.38
Surface Gravity (in Earth gees): 0.36
Surface temperature (Celcius): 243.00
Axial tilt (in degrees): 18
Planetary albedo: 0.268
Length of year (in years): 0.19
Length of day (in hours): 25.68

Planet #2:
Distance from primary star (in A.U.): 0.453
Eccentricity of orbit: 0.036
Mass (in Earth masses): 0.009
Equatorial radius (in Km): 1362.7
Density (in g/cc): 5.254
Escape Velocity (in km/sec): 2.34
Smallest molecular weight retained: 145.57
Surface acceleration (in cm/sec2): 200.10
Surface Gravity (in Earth gees): 0.20
Surface temperature (Celcius): 160.80
Axial tilt (in degrees): 19
Planetary albedo: 0.366
Length of year (in years): 0.29
Length of day (in hours): 33.88

Planet #3:
Distance from primary star (in A.U.): 0.565
Eccentricity of orbit: 0.162
Mass (in Earth masses): 0.874
Equatorial radius (in Km): 6129.4
Density (in g/cc): 5.417
Escape Velocity (in km/sec): 10.67
Smallest molecular weight retained: 6.98 (CH4)
Surface acceleration (in cm/sec2): 927.93
Surface Gravity (in Earth gees): 0.95
Boiling point of water (celcius): 267.9
Surface Pressure (in atmospheres): 66.870 RUNAWAY GREENHOUSE EFFECT
Surface temperature (Celcius): 474.91
Cloud cover percentage: 100.00
Axial tilt (in degrees): 20
Planetary albedo: 0.648
Length of year (in years): 0.40
Length of day (in hours): 15.73

...

And, er... No, I couldn't possibly tell, straight out, what use this could be for the Vega Strike project but I just had me a little detour from my original
task to render me some planets. :)
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Re: Simulating solar systems

Postby charlieg » Fri Sep 02, 2011 5:44 pm

You could try Celestia:
http://www.shatters.net/celestia/
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Re: Simulating solar systems

Postby gonzo » Fri Sep 02, 2011 6:13 pm

Thanks!
I actually have it installed but I haven't given it time yet. I just watched the introduction and it's quite a show their giving.
I'm more into simulating the "creation" of star systems rather than exploring cosmos though.
Incidentally I just watched this video and it's another take on it. Big Bang style. (01:15 and onward)
... Can you let two galaxies collide like that on you're laptop or do you need a supercomputer for the job?
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Re: Simulating solar systems

Postby gonzo » Fri Sep 02, 2011 6:38 pm

Oki. I'm getting closer. Just found Gadget and Starburst and
it looks like they could keep me busy for a while...
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Re: Simulating solar systems

Postby gonzo » Sat Sep 03, 2011 11:47 am

Well. That was compiling "fun" for some four hours to no use...
Here's an easier program to work with: gravit
Both the 0.42 from the page above and the 0.51 from github compiles and works fine.
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Re: Simulating solar systems

Postby JamieWade » Sun Dec 01, 2013 4:33 am

gonzo wrote:Does anyone know about free/open software for space simulation? (preferably linux/unix)
I'm right now looking into accrete
From the accrete webpage:
Accrete is a physical simulation of solar system planet formation. This simulation works by modelling a dust cloud around a Sun-like star, injecting a series of masses which collect dust, and form planets by accretion.

Accrete is from the 70's and I've only found one later program, stargen:

While accrete gives you a text output of formed planets/planetoids and star, Stargen gives you a grafic printout where
planets from our solar system is borrowed to represent the simulated system.
Basically I'm looking for more modern versions for simulating planet/solar system formation.


Anyway,
this is what an accrete session will look like:
--------------------------------------------------

Code: Select all
~ $ cd accrete
~ $ ./accrete
.. Injecting protoplanet.
.. Injecting protoplanet.
.. Injecting protoplanet.
Collision between two planetesimals!
.. Injecting protoplanet.
.. Injecting protoplanet.
.. Injecting protoplanet.
Collision between two planetesimals!
.. Injecting protoplanet.

...

This gives you a textfile, New.System, which will look something like this:

SYSTEM CHARACTERISTICS
Mass of central star: 1.142 solar masses
Luminosity of central star: 1.899 (relative to the sun)
Total main sequence lifetime: 6013 million years
Current age of stellar system: 5109 million years
Radius of habitable ecosphere: 1.378 AU

Planet #1:
Distance from primary star (in A.U.): 0.344
Eccentricity of orbit: 0.001
Mass (in Earth masses): 0.049
Equatorial radius (in Km): 2365.1
Density (in g/cc): 5.271
Escape Velocity (in km/sec): 4.06
Smallest molecular weight retained: 48.17 (SO2)
Surface acceleration (in cm/sec2): 348.38
Surface Gravity (in Earth gees): 0.36
Surface temperature (Celcius): 243.00
Axial tilt (in degrees): 18
Planetary albedo: 0.268
Length of year (in years): 0.19
Length of day (in hours): 25.68

Planet #2:
Distance from primary star (in A.U.): 0.453
Eccentricity of orbit: 0.036
Mass (in Earth masses): 0.009
Equatorial radius (in Km): 1362.7
Density (in g/cc): 5.254
Escape Velocity (in km/sec): 2.34
Smallest molecular weight retained: 145.57
Surface acceleration (in cm/sec2): 200.10
Surface Gravity (in Earth gees): 0.20
Surface temperature (Celcius): 160.80
Axial tilt (in degrees): 19
Planetary albedo: 0.366
Length of year (in years): 0.29
Length of day (in hours): 33.88

Planet #3:
Distance from primary star (in A.U.): 0.565
Eccentricity of orbit: 0.162
Mass (in Earth masses): 0.874
Equatorial radius (in Km): 6129.4
Density (in g/cc): 5.417
Escape Velocity (in km/sec): 10.67
Smallest molecular weight retained: 6.98 (CH4)
Surface acceleration (in cm/sec2): 927.93
Surface Gravity (in Earth gees): 0.95
Boiling point of water (celcius): 267.9
Surface Pressure (in atmospheres): 66.870 RUNAWAY GREENHOUSE EFFECT
Surface temperature (Celcius): 474.91
Cloud cover percentage: 100.00
Axial tilt (in degrees): 20
Planetary albedo: 0.648
Length of year (in years): 0.40
Length of day (in hours): 15.73

...

And, er... No, I couldn't possibly tell, straight out, what use this could be for the Vega Strike project but I just had me a little detour from my original
task to render me some planets. :)

Hello friend were you able to simulate the solar system? I am working on similar project so can you help me out with some information? I hope you will reply..
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Re: Simulating solar systems

Postby gonzo » Sun Dec 01, 2013 3:24 pm

The only program I managed to run was accrete and some other software that was a version of accrete. It will just give you a list of characteristics as shown in this thread and I don't know what much use it is other than show that ifyou start up with a bunch of matter in orbit around a star they will interact(collide) to form something similar to our solar system.

I am working on similar project so can you help me out with some information?

What do you need the simulation to do?
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Re: Simulating solar systems

Postby warpnoob » Sat Feb 01, 2014 1:53 pm

At first I thought you wanted something along the line of an actual space travel simulator, in which case I'd have given you Orbiter.
But in this case, uhm, how about Universe Sandbox?
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Re: Simulating solar systems

Postby gonzo » Sat Feb 01, 2014 4:47 pm

http://universesandbox.com/screenshots/
Thanks, that looks brilliant. I'm on linux though so it'll take a while to reach my computer.
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