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Vortex of a synchronous rotation planet

Posted: 22.11.2009, 20:26
by Helios_space
Hi, I'm doing my version of the Gliese 581 system, I am with the planet Gliese 581 c that I have represented as an ocean planet with a large vortex in the center of the face lit forever. The clouds and the ocean and I have done, but I put the big hurricane on the day side but failed. I have to tip the axis of the atmosphere or the planet, but without that follow a false pole synchronous orbit while the storm turns.
Does anyone know how to do it?
I know you can because once you get to have an addition of this same planet I downloaded from the Celestia Motherlode, but can not find either my PC or the Internet
Can you help?

Excuse my English.

Preview of planet
Image

Re: Vortex of a synchronous rotation planet

Posted: 28.11.2009, 12:08
by eburacum45
I've got a planet which has such a hurricane; I'll post the .ssc for it when I get home. The rotation is quite complex...

Re: Vortex of a synchronous rotation planet

Posted: 28.11.2009, 20:15
by Helios_space
Here is the image of an addon that got the effect I want. That the atmosphere or the planet, has two rotational axes, one perpendicular to the orbit and other pointing always to the star.
Image
Of course I made atmospheric texture but I can not hang because it is very large, about 9,8 Mb
What servers you use?

Excuse my English.

Re: Vortex of a synchronous rotation planet

Posted: 28.11.2009, 23:22
by John Van Vliet
--- edit ---

Re: Vortex of a synchronous rotation planet

Posted: 29.11.2009, 00:48
by Helios_space
I did not know until now that Gliese 581c rotation tubiera not blocked, but a similar rotation to that of Venus or Mercury. It may even be good news for the habitability of this planet, have days, even longer.
I would also succeed in creating this cyclone as atmospheric model for habitable planets with synchronous rotation.

Excuse my english.

Re: Vortex of a synchronous rotation planet

Posted: 29.11.2009, 06:53
by eburacum45
Sorry; I forgot all about posting that add-on. But the one that you posted is more or less identical to mine.

As far as the possibility of a hurricane goes, I was inspired to make mine by this National Geographic programme;
http://en.wikipedia.org/wiki/Aurelia_(planet)#Aurelia

from there
Half of Aurelia would be in perpetual darkness and would be in a permanent ice age. The other half would contain a giant, unending hurricane with permanent torrential rain at the point directly opposite the local star. In between these two zones would be a place suitable for life.

This hurricane would generate enormous waves in the ocean and the waves would migrate outwards. Oceanographers should test how high these waves would be in the postulated nearby swamps and delta area. They would be wind driven waves and would not reach from the top of an ocean to the bottom like a Tsunami. Nonetheless waves as big and as devastating as those that humans call freak waves might be regular

This assessment differs from most concepts of atmospheric circulation on tidally locked planets I have read elsewhere, but for the sake of variety I am happy to have a few such 'hurricane-locked' worlds in the Orion's Arm scenario.

This planet in OA is based on this concept;
http://www.orionsarm.com/eg-article/4922e9afcd478

other tidally-locked planets which do not have this kind of circulation also exist in OA
http://www.orionsarm.com/eg-article/47a683c98fd29
http://www.orionsarm.com/eg-article/48fa66f687117

Re: Vortex of a synchronous rotation planet

Posted: 29.11.2009, 12:06
by Helios_space
I too am inspired by the planet Aurelia to mine, although he doubted if the night would freeze or not. He envisioned a world ocean with an atmospheric pressure quite high, with much water vapor, a relatively high temperature and strong winds make the air circulate between the two hemispheres.

I would make my hurricane turn the planet like the Bullseye of Orion's Arm.
Can you see the code for this planet?


Excuse my English

Re: Vortex of a synchronous rotation planet

Posted: 29.11.2009, 17:51
by eburacum45
I think I'll made an add-on for Bullseye and place it on the OA site.
In the meantime you can find some code in this thread;
viewtopic.php?f=6&t=12198&st=0&sk=t&sd=a&hilit=tidally+locked

Hope this helps

steve

Re: Vortex of a synchronous rotation planet

Posted: 29.11.2009, 18:40
by ajtribick
Mean stellar flux received over the course of an orbit is given by [tex]f = \frac{L_\ast}{4\pi a^2} \frac{1}{\sqrt{1 - e^2}}[/tex] where L_* is solar luminosity, a is semimajor axis and e is eccentricity.

For Gliese 581 c, the values are L_* = 0.013 times solar, a = 0.07 AU and e = 0.17. This results in stellar flux 2.7 times that received by Earth. For comparison, Venus, a planet not particularly noted for its extensive oceans, receives a mere 1.9 times the amount of stellar flux that Earth does. It is thus somewhat surprising that this planet was ever promoted as a potential "habitable planet".

Also, the eccentricity of the orbit of Gliese 581 c may mean it isn't 1:1 tidally locked. :)

Re: Vortex of a synchronous rotation planet

Posted: 29.11.2009, 22:17
by eburacum45
For what it's worth, here is the code for Bullseye.

Code: Select all

"Bullseye" "HIP 117492"
{
    Color [ 0.3 0.5 1.0 ]
    Texture "blueplanet.*"
    SpecularTexture "blueplanetspec.*"

    Radius 6121
Color [ 0.85 0.85 1.0 ]
   SpecularColor [ 0.5 0.5 0.55 ]
   SpecularPower 25.0
    Atmosphere {
        Height 60
        CloudHeight 7
        CloudSpeed -65
        CloudMap "hurricane.*"
        Mie 0.001
        MieAsymmetry -0.25
        Rayleigh [ 0.001 0.0025 0.006 ]
        MieScaleHeight 12
    }

    EllipticalOrbit {   
        Period            0.5
        SemiMajorAxis     0.25
        Eccentricity      0
        Inclination       0
        AscendingNode     80
        LongOfPericenter  24
        MeanLongitude     340
    }

    FixedRotation { }
}


Modify "Bullseye" "HIP 117492"
{
    BodyFrame
    {
        TwoVector
        {
            Center "Hip 68165/Bullseye"
            Primary {
               Axis "z"
               RelativePosition { Target "Hip 68165" }
            }
            Secondary {
               Axis "x"
               RelativeVelocity { Target "Hip 68165" }
            }
        }
    }
}

Of course, without the textures, this doesn't really mean much.

Re: Vortex of a synchronous rotation planet

Posted: 30.11.2009, 17:08
by Helios_space
Thank you very much, the code has been of great use, I am still fine tuning some things but the hurricane and turns well. :)

Excuse my english.