Fluids

This application illustrates the 2D transport of the temperature in a duct with a cylinder placed in its middle. The fluid flow has been computed at a first time. Then the transport of the temperature has been computed (a different value of the temperature has been imposed at the inlet and on the walls). The diffusion of the temperature in the cylinder has also been computed with equality of the values at the interfaces.

This example illustrates a simple incompressible inviscid flow around a car (fluid can go above and under the car), modelled with a simplified geometry. A mesh made of only tetrahedrons has been used. Streamlines of the flow are represented on the following figure.

This application illustrates the use of the Boussinesq approximation. A cavity is heated at the bottom. The elevation of the temperature then decreases the density. As the gravity is taken into account, the fluid at the top of the cavity, that is then heavier, goes down while the fluid at the bottom, lighter, goes up. A vortex is then created inside the cavity (arrows are added on the figure just to represent the direction of the flow).