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Himpu Marbona

As seen in: Physical Review B
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Impact of harmonic inflow variations on the size and dynamics of the separated flow over a bump

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By Campus de Montegancedo, Boadilla del Monte, Daniel B. Rodriguez, Himpu Marbona
| Physical Review B
The separated flow over a wall-mounted bump geometry under harmonic oscillations of the inflow stream is investigated with direct numerical simulations. The bump geometry gives rise to streamwise pressure gradients similar to those encountered on the suction side of low-pressure turbine (LPT) blades. Under steady inflow conditions, the separated-flow laminar-to-turbulent transition is initiated by self-sustained vortex shedding due to Kelvin-Helmholtz (KH) instability.
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