This post is a simple demonstration of the timeVaryingFixedUniformValue boundary condition. This boundary condition allows a Dirichlet-type boundary condition to be varied in time. To demonstrate, we will modify the oscillating cylinder case. Set-Up Instead of using the oscillating boundary condition for point displacement. We will have the cylinder do two things: Move in a … Continue reading Time-Varying Cylinder Motion in Cross-flow: timeVaryingFixedUniformValue
Tag: computational fluid dynamics
Establishing Grid Convergence
Establishing grid convergence is a necessity in any numerical study. It is essential to verify that the equations are being solved correctly and that the solution is insensitive to the grid resolution. Some great background and details can be found from NASA: https://www.grc.nasa.gov/WWW/wind/valid/tutorial/spatconv.html First, here is a summary the equations and steps discussed here (in case … Continue reading Establishing Grid Convergence