How does underlying surface affect turbulent structures?
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The underlying surface has a significant impact on turbulent structures. Surface undulations, such as sinusoidal waves or roughness, can affect turbulence generation, transport, and the resulting drag increase . In the case of non-flat surfaces, the surface topology plays an important role in transitional roughness regimes, where the cumulative effect of surface undulations on turbulence quantities is hard to characterize . The increase in wave slope enhances near-surface turbulent mixing, resulting in increased total drag and modulation of the buffer layer . The primary turbulence generation occurs in specific regions of the surface, such as the leeward and windward sides of the waves . The interaction of coherent structures of different sizes and frequencies can lead to the appearance of non-coherent turbulence . Overall, the underlying surface shape and characteristics play a crucial role in determining the dynamics and characteristics of turbulent flow .
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8 Citations | The paper discusses the influence of surface topology on turbulent structures, specifically focusing on the impact of surface undulations on the turbulence structure and resulting drag increase. |
19 Nov 2015 1 Citations | The underlying surface affects turbulent structures by generating different types of vortices. A homogeneous heated surface leads to the formation of large toroidal vortices, while an inhomogeneous heated surface results in the emergence of strongly swirling spiral vortices. |
3 Citations | The underlying surface affects turbulent structures by influencing turbulence generation and transport, leading to changes in drag, turbulence mixing, and the modulation of the buffer layer. |
Open access•Posted Content 14 Nov 2019 1 Citations | The underlying surface affects turbulent structures by influencing turbulence generation mechanisms, Reynolds stress transport, and the resulting drag increase. |
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