project3_omw issueshttps://gitlab.kwant-project.org/wouterkesselsap/project3_omw/-/issues2019-05-22T07:14:43Zhttps://gitlab.kwant-project.org/wouterkesselsap/project3_omw/-/issues/3Planning the project2019-05-22T07:14:43ZMichael WimmerPlanning the projectThe actual planning from you was done in #1 (I'm opening this issue with a specific title that helps us find it automatically
Just to make sure: you are the group I talked to in class, right? We concluded that bodies with opposite rotat...The actual planning from you was done in #1 (I'm opening this issue with a specific title that helps us find it automatically
Just to make sure: you are the group I talked to in class, right? We concluded that bodies with opposite rotation in the solar system might not be too interesting. So you were now planning to do more objects (asteroid belt), and use the Barnes-Hut, is this right? For this, also note the materials [here](https://gitlab.kwant-project.org/computational_physics_19/course_notes/tree/master/project%203/ComputationalAstrophysics)2019-05-22https://gitlab.kwant-project.org/wouterkesselsap/project3_omw/-/issues/2review week 32019-05-07T21:10:00ZAnton Akhmerovreview week 3*Hi! We've opened a review issue for you. Your task is to reply to this issue before the Wednesday deadline and answer the following questions.*
1. What have you achieved in the last week?
2. What goal are you trying to reach right now?...*Hi! We've opened a review issue for you. Your task is to reply to this issue before the Wednesday deadline and answer the following questions.*
1. What have you achieved in the last week?
2. What goal are you trying to reach right now?
3. How are you checking whether you correctly reach the goal?
**illustrate this with data, possibly also refer to the relevant bits of code**
4. If you are facing a problem, what is its likely source?
5. What steps do you plan to undertake to solve the problem?ArnoArno2019-05-07https://gitlab.kwant-project.org/wouterkesselsap/project3_omw/-/issues/1Research Topic Project 3 (proposal)2019-05-22T07:37:08ZMax CapelleResearch Topic Project 3 (proposal)Hi, for project 3 we want to investigate what happens when celestial bodies move in opposite direction (in 2D). In solar systems and galaxies we see that all celestial bodies go around the gravitational center the same way around. But wh...Hi, for project 3 we want to investigate what happens when celestial bodies move in opposite direction (in 2D). In solar systems and galaxies we see that all celestial bodies go around the gravitational center the same way around. But what if one or more bodies move in the opposite direction? What influence will that have on the entire system. What parameters are key for disrupting the system?
We would like to hear what you think of this idea and whether this topic is allowed.
**Research question**
What happens when celestial bodies move in opposite direction (in 2D)?
**Sub questions**
- when varying the properties of the bodies (mass, initial velocity and eccentricity, initial position and distance tot sun)
- with and without the Sun fixed in the center
**Validation**
- First we want to validate a simple version of our model by comparing to the Kepler laws.
![400px-OrbitalEccentricityDemo](/uploads/6fb2a5148ea301b85c9fb5ade9d99e71/400px-OrbitalEccentricityDemo.png)(source: https://en.wikipedia.org/wiki/File:OrbitalEccentricityDemo.svg)
- Subsequently we want to simulate our own solar system.
- After we this we can investigate our research question.
**Other remarks**
We will simulate a 2D situation and use cartesian coordinates.
**Selection of sources we will start with**
- [Thomson, W.T. Introduction to Space Dynamics](https://soaneemrana.org/onewebmedia/INTRODUCTION%20TO%20SPACE%20DYNAMICS1.pdf)
- [Kepler orbit, Wikipedia](https://en.wikipedia.org/wiki/Kepler_orbit) and [Kepler, Hyperphysics](http://hyperphysics.phy-astr.gsu.edu/hbase/kepler.html#c6)
- [Orbitals, Hyperphysics](http://hyperphysics.phy-astr.gsu.edu/hbase/orbv.html#bo)