On the scaling and unsteadiness of shock induced separation

Shock wave boundary layer interactions (SWBLI) are a common phenomenon in transonic and supersonic flows. The presence of shock waves, induced by specific geometrical configurations, causes a rapid increase of the pressure, which can lead to flow separation. Examples of such interactions are found in amongst others rocket engine nozzles and on...

Particle Tracking in a Shallow Mixing Layer: A Fluid Dynamics Laboratory in the Field

At locations where two natural streams of different velocity come together, a mixing layer develops. In this free shear flow, the velocity difference between the two streams is gradually reduced through the exchange of lateral momentum. This involves different forms of turbulent phenomena. If the width of the flow domain is large compared to the...

LES and URANS Unsteady Boundary Layer Strategies for Pulsating and Oscillating Turbulent Channel Flows Applications

The use of wall functions has been investigated for LES and URANS numerical simulation in pulsating and oscillating channel flow applications. The results show that the wall function approach is accurate in the so-called quasi-steady regime but there are discrepancies with the experimental results in the intermediate frequency range. A special...