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- W3120449964 abstract "This work investigates the effect of the time marching on the wake structure breakdown of a hovering rotor. Several factors are tested such as 1) time step sizes, 2) background meshes3) BDF2 and BDF1 schemes, and 4) adding temporal damping to the BDF2 scheme. For this, a blended formulation of the BDF2 and BDF1 schemes is derived with a temporal damping variable. Simulations are performed for NASA Langley’s PSP hovering rotor, and results are compared such as wake structures, integrated rotor performance, and FFT analysis of the thrust coefficient. The investigation shows that adding a temporal damping to the BDF2scheme reduces unphysical wake structure breakdown by reducing secondary vortex braid instability and makes predicted thrust and torque coefficients more settled down. The blended formulation with a temporal damping can be a used as an engineering solution of the wake structure breakdown." @default.
- W3120449964 created "2021-01-18" @default.
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- W3120449964 date "2021-01-04" @default.
- W3120449964 modified "2023-09-27" @default.
- W3120449964 title "The effect of time marching on the wake structure breakdown in a hovering rotor simulation" @default.
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- W3120449964 doi "https://doi.org/10.2514/6.2021-0736" @default.
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