Large-Eddy Simulations of Flow over a Backward-Facing Ramp with a Wall-Mounted Cube

What is it about?

Flow separation, a phenomena where flow detaches from the surface is common in many engineering applications, including aerospace and automotive industry, and can cause serious performance issues like, stall of aircraft, high drag and low fuel efficiency. Thus flow control of turbulent boundary layer is an important area of research and needs further insight into the complex flow behavior. In present times, compute power allows us to simulate such complex flow with high-fidelity. In this article, we use high-fidelity simulations to modulate a separating flow by submerging a cube-shaped obstacle in the flow, and monitor the flow behavior including structure of turbulence. This data can be used to tune and optimize models for simulating such flows and can also provide guidance to design better control strategies.

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