The Rayleigh-Taylor Instability

Problem Background

Initial Conditions

First Simulations

This simulation shows a single mode perturbation. It is run in 2D with a fixed grid of 100 x 300.

• RT Movie

For this run, all parameters are the same. The grid is now 50 x 150, and there are 3 levels of AMR which yields an effective resolution that is 4x the previous run.

• RT Movie (Higher Resolution)​

I realized that uniform gravity was not working properly in the first two simulations, so here is one in which it is working. Also, this simulation is a 50 x 150 grid with 2 levels of AMR. This set up could be the one to go into the test suite.

• RT Movie (Gravity Working)​

Tracking the Interface

Calculating the Growth Rate

Results