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Greenleaf uploaded a video 3 weeks agoSun ripped apart by near black hole, simulated in Universe Sandbox ² - Duration: 109 seconds.
When an soft object like a star is near a dense object like a black hole, or a more compact star, the gravity on the surface of the soft object can be stronger towards the dense object than towards... -
Greenleaf uploaded a video 3 weeks ago
Black hole effect in Universe Sandbox ² - Duration: 14 seconds.
Nothing new. Just a demonstration of the graphics effect of light being bent by gravity in Universe Sandbox ² -
Greenleaf uploaded a video 3 weeks ago
More gradual Roche limit fragmentation in Universe Sandbox ² - Duration: 52 seconds.
This is a very brief preview of the new Roche limit fragmentation as running in Universe Sandbox ². It is still very much a work in progress, but it is seen how Earth is tearing apart the moon when... -
Greenleaf uploaded a video 1 month ago
Universe Sandbox ² rings - random mayhem - Duration: 90 seconds.
This is an older video I recorded shortly after a performance rewrite. It has been private for almost a year. I don't really know why I did that, but here it is anyway. A bit outdated, but since it... -
Greenleaf uploaded a video 1 month ago
Rings in universe Sandbox ² - Duration: 2 minutes, 40 seconds.
This is an older video I recorded shortly after a performance rewrite. It has been private for almost a year. I don't really know why I did that, but here it is anyway. A bit outdated, but since it... -
Greenleaf uploaded a video 1 month ago
Roche limit fragmentation in Universe Sandbox ² - Duration: 75 seconds.
A very brief and simple demonstration of the work in progress fragmentation of a moon which crosses the Roche limit.
Currently the breakup is instant upon crossing, which is not realistic. Work is ... -
Greenleaf uploaded a video 5 months ago
Fluid Dynamics long (basic) interface demo - Duration: 13 minutes.
Ok, so I took a quick break from work and made a new video of the latest (26. aug. 2015) build of the SPH app, which shows some of the initial basic interactions and visualization options. Sorry ab... -
Greenleaf uploaded a video 5 months ago
Fluid Dynamics demonstration with touch based gravity - Duration: 3 minutes, 53 seconds.
Another video showing the work-in-progress standalone SPH app I have been working on.
This is another video I made a month ago and forgot all about. It shows the same default spinning collapse as t... -
Greenleaf uploaded a video 5 months ago
SPH Selfgravitating collapsing disk - Duration: 66 seconds.
I found an "old" video of the "new" SPH application, which shows some interesting things.
All particles attract all particles, so localized clumping will be seen. When blobs collide, shock ripples ... -
Greenleaf uploaded a video 8 months ago
Collapsing particles form planet with core - Duration: 3 minutes, 15 seconds.
I started playing around with some SPH (smoothed Particle Hydrodynamics) code again and this is the preliminary results.
5000 particles are placed randomly in a circle and collapses under gravity ... -
Greenleaf uploaded and posted 9 months ago
Sneak preview of Universe Sandbox² Alpha 15
Universe Sandbox ² Alpha 15, sneak preview - Duration: 2 minutes, 33 seconds.
http://universesandbox.com An interactive gravity, climate, collisions and space simulator and much more.
We have promises to keep and miles to go before we can sleep,
but Universe Sandbox ² alpha... -
Greenleaf uploaded and posted 1 year ago
Been rewriting physics from the ground up to improve performance. A lot of C# sugar coating was removed and now even CPU outperforms the previous GPU OpenCL implementation.
Universe Sandbox ² physics optimization - Duration: 116 seconds.
Universe Sandbox ² http://universesandbox.com
Is an astronomical simulator with heavy emphasis on gravitational interaction.
Note that the slight stuttering, primarily at the beginning, is caused ... -
Greenleaf uploaded a video 1 year ago
Unstable orbital ring tested for Universe Sandbox ² - Duration: 51 seconds.
This is a test view of a constraint based orbital ring for Universe Sandbox ² http://universesandbox.com
Universe Sandbox ² is a gravitational, climate, collision, stellar evolution etc., sandbox/... -
Greenleaf uploaded a video 1 year ago
Universe Sandbox² collision rewrite, work in progress - Duration: 3 minutes, 52 seconds.
Universe Sandbox² http://universesandbox.com
is a gravitational, climate, collision, stellar evolution etc., sandbox/simulator, which lets you play with the world on an astronomical scale.
This vi... -
Greenleaf uploaded a video 1 year ago
Numerical integrators in Universe Sandbox ² - Duration: 6 minutes, 26 seconds.
http://www.universesandbox.com
Universe Sandbox ² is a gravity simulator, among other things, and to integrate the equations of motion, a number of integrators have been implemented. This video is ... -
Greenleaf uploaded a video 1 year ago
Collision shock waves in Universe Sandbox ² - Duration: 3 minutes, 1 second.
Universe Sandbox ² is an interactive space simulator which lets you play with gravitational motion, planetary collisions, climate, star development and much more. http://www.universesandbox.com
Th... -
Greenleaf uploaded a video 1 year ago
Grazing and off center impacts in Universe Sandbox² - Duration: 108 seconds.
http://www.UniverseSandbox.com is an interactive, easy to use physics based space simulator for Windows, Mac and Linux.
This is a brief demonstration of grazing and general off center impacts, and... -
Greenleaf uploaded a video 1 year ago
GreenleafDevelopment add video - Duration: 70 seconds.
This is an "add" video I made a while back but kept private until now, since I generally feel a little odd trying to "advertise", but here it is anyway.
Yes, it was meant to be humorous with the m... -
Greenleaf uploaded a video 1 year ago
Planet impacted by many moons - Duration: 3 minutes, 30 seconds.
Universe Sandbox ² Alpha 10.1
http://www.universesandbox.com
(there were, again, some slight issues with jittering in the recording)
Primarily a demonstration of the current, in development, look... -
Greenleaf uploaded a video 1 year ago
Multiple planet moon collisions and a star at the end - Duration: 15 minutes.
(there is some jittering which was caused by the screen recording and the simulation fighting for resources and later worsened by uploading to YouTube. I will consider rerecording this, but now its... -
Greenleaf uploaded a video 1 year ago
Gravitational collapse of SPH system and the effect of viscosity - Duration: 89 seconds.
A basic SPH system collapsing under its own gravity to emulate simple planetary formation (think gas collapsing and condensing and forming a ball)
Coloring is a basic "hot" colormap based on densi... -
Greenleaf uploaded a video 1 year ago
Gravitational collapse of SPH system - Duration: 114 seconds.
Different SPH systems are collapsed under their own gravity and collided with each other to emulate simple planetary formations and collisions (think gas collapsing and condensing to form planets a... -
Greenleaf uploaded a video 1 year ago
Venus colliding with Earth in UniverseSandbox² Alpha 7 - Duration: 45 seconds.
Venus, surface visible with no atmosphere, free falls into Earth and the resulting body is molten before accelerated cooling solidifies it again. -
Greenleaf uploaded a video 1 year ago
Planetary close encounters and collisions modelled with SPH - Duration: 2 minutes, 24 seconds.
A short montage of some development videos showing SPH as it is being added to UniverseSandbox² http://www.universesandbox.com/2
Main theme is two planets having a very close encounter where they ... -
Greenleaf uploaded a video 1 year ago
Extended collisions with Universe Sandbox ² Alpha 7 - Duration: 6 minutes, 8 seconds.
A longer collision test which shows the (current) gradual collision mode. Here grazing collisions are supported, where only part of the momentum and mass is being transferred.
It is shown how orbi... -
Greenleaf uploaded a video 1 year ago
Very basic SPH simulation of a body approaching a "black hole" - Duration: 22 seconds.
Let me repeat the title: "a basic simulation"...
As the body approaches the "black hole" the gravity gradient increases and stretches the body before "eating" it.
This was part of an old project
h... -
Greenleaf uploaded a video 1 year ago
Planet collision aka failed moon - Duration: 21 seconds.
Planet collision modeled using SPH.
It was a failed attempt at creating a planet with a moon, using a basic equation of state.
This was part of an old project
http://www.greenleaf.dk/projects/sp... -
Greenleaf uploaded a video 1 year ago
Accretion disk in 2D modelled using SPH - Duration: 58 seconds.
Accretion disk in 2D modeled using SPH.
An artificially high viscosity is used to force quick planet formation.
Particles are colored according to density.
This was part of an old project
http://... -
Greenleaf uploaded a video 1 year ago
Accretion disk with SPH showing tree used for gravity calculations - Duration: 65 seconds.
Accretion disk in 2D is modeled using SPH.
An artificially high viscosity is used to force quick planet formation.
The tree used for gravity calculation is shown for debugging purposes with gray c... -
Greenleaf uploaded a video 1 year ago
Moon ripped apart by gravitational forces - Duration: 88 seconds.
A SPH model of a moon orbiting its planet far inside the Roche limit where tidal forces breaks it apart. Viscosity (artificially high for this test) in the disk transfers momentum from the inner pa... -
Greenleaf uploaded a video 1 year ago
Simple tether test for later inclusion in Universe Sandbox ² - Duration: 68 seconds.
Early in development testing of tethers for Universe Sandbox ²
Initially a planet rotates with a connected tether. The tethers own mass acts as counter weight and pulls the tether taut.
The materia... -
Greenleaf uploaded a video 1 year ago
Early SPH debug visualization with Universe Sandbox ² - Duration: 2 minutes, 33 seconds.
www.UniverseSandbox.com/2
SPH is being added to Universe Sandbox ², but is still at an early state of development.
This video shows some basic test cases.
Ambient sound track is not in-game audio -
Greenleaf uploaded a video 1 year ago
Various collisions Universe Sandbox 2 Alpha 7 - Duration: 3 minutes, 27 seconds.
www.universesandbox.com/2
A quick and dirty video of some of the new collisions in universe sandbox 2 alpha 7. It shows both the instantaneous and gradual collision modes as well as the material d... -
Greenleaf uploaded a video 1 year ago
Moon colliding with Earth - Universe Sandbox 2 Alpha 7 - Duration: 5 minutes, 4 seconds.
http://www.universesandbox.com/2/
Two versions of the same impact are shown. Initially fast forward and then in realistic time.
The Moon comes directly towards Earth at 12.000 m/s. Though the init...
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