Particle flow in an expansion (turb fac 10 + rotating camera)

Particle tracing in a cylinder. Same as video http://www.youtube.com/watch?v=V7pqi6od45A but now with a rotating camera. This is a project to compute the RTD (Residence Time Distribution) of chemical reactors. Just to start the stirrers and buffles are not included, so it is simply a cylindrical container with an inlet at the top and an outlet at the bottom. Massless particles are injected at the inlet and they are tracked until they exit from the domain. The particles are tracked with the mean flow, which was obtained with Fluent (k-epsilon model). Random walk is added to the mean particle in the form of a random velocity with coherence time T_L=k/eps and mean square of (u')_rms = sqrt(k). In this case we artificially enhanced the random walk of the particles by enhancing the velovity fluctuation by a factor of ten, i.e. (u')_rms = 10*sqrt(k). This factor has no physical justification, it is used just to check the change in the RTD with the turbulence level.

Category:

Science & Technology

Tags:

• cfd
• fluid
• mechanics
• particle
• flow
• chemical
• reactor
• computer