Practical Background Our intuition will tell us that sharp or rounded objects will cause less drag when moving through fluid. Slightly less intuitive is the fact that changing the rear part will reduce drag even more than changing the front. So why is it that on cars and trucks, all drag-reducing effort is being put […]
In a random conversation I recently had, a question popped up: why do whistles whistle? I had no choice but to reach for the most complex tool available: OpenFOAM . All the Trouble It’s quite straightforward, get a model of a whistle and stick it into a solver. At least it seemed that easy at
In turbomachinery theory relative velocity is defined as w = c – u where u is circumferential velocity and c is absolute velocity at specified point. The relative velocity w is very important for evaulation of flow in or around rotating bodies. When using SRFSimpleFoam, Urel is automatically added to to resulting fields. With others (SimpleFoam with
Here’s a quick tutorial on interFoam solver from the OpenFOAM toolbox. It demonstrates how much mess one makes when sneezing close to a bowl of soup. The Case Every time I sneeze during lunchtime my imagination runs wild with images of soup splattering all over the place. It wouldn’t be very polite to try it
Here at Damogran Labs we do complicated things step by step, like this: Step one. Buy an STM development board. Step two. Write the simplest possible program that makes an LED blink. Final step. Connect the most sophisticated Bluetooth Low Energy module and study 3000 pages of documentation to compile the most complicated software that
