A draining oxidizer tank with a low gravity coast,
propellant settling, and engine restart. It is
similar to a 2nd stage launch vehicle tank.
Read more in our Aerospace Tech Papers
The presence of a free or moving boundary introduces serious complications for any type of flow analysis. For all but the simplest of problems, it is necessary to resort to numerical solutions. Even then, however, free surfaces require the introduction of special methods to define their location, their movement and their influence on a flow.
In the following discussion we briefly review the types of numerical approaches that have been used to model free surfaces, indicating the advantages and disadvantages of each method. Read more in CFD-101 >