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Gravity Tree

Gravity Tree
  • #: 147719
  • Price: free ($0.00) In Apple Store
  • Category: Education
  • Updated: 2009-12-10
  • Current Version: 1.1
  • 1.1
  • Size: 0.10 MB
  • Language: English
  • Seller: Hanno Rein
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 3.1.2 or later
  • © 2009 Hanno Rein
  •  Add to Favorite apps

 

Description

This program visualizes a tree based gravity solver. Several hundred particles in a box with periodic boundary conditions are simulated and displayed in real time on your iPhone. Exactly the same simulation also runs on supercomputing facilities. It can be used to model the formation of planetesimals. Planetesimals are the building blocks of planets in the early solar system. Because of self-gravity planetesimals clump and eventually form planets. However, to model the physical processes realistically, one has to use many more particles than the iPhone can handle (hundreds of thousands).

The original idea of a tree code is based on a nature paper by J. Barnes and P. Hut (Nature, 324(4):446-449, December 1986). A recent scientific publication describing some details of this particular code is available for free at http://arxiv.org/abs/1001.0109

What's New in Version 1.1

* Massive performance increase (5x).
* Corrected bug in collision model which might lead to close encounters and gravitational scattering.

iPhone Screenshots

Gravity Tree iPhone Screenshot 1
Gravity Tree iPhone Screenshot 2
Gravity Tree iPhone Screenshot 3

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The information may be outdated (2017-03-08 01:48:50). For actual information go to iTunes

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