Streamline trajectories

I recently found myself in the situation where I wanted to get the trajectories of streamlines starting from a specific point. Lots of visualization software offer the possibility to plot streamlines. Two of these are Paraview and Tecplot. Paraview is open-source and generally good, although on dense meshes, streamlines tend to stop randomly. Tecplot is…

Quick and easy 2D flow simulations

When working with fluids, knowing what the flow field looks like is often helpful. While most experimental work is fully three dimensional, a 2D approximation will often capture the essence of the flow. In this post,  I will detail how one can use the finite element library oomph-lib to “quickly” calculate the flow in almost any geometry. This will…