A study on boundary transition of a terrain model for wind field characteristics measurement

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (8) : 178-185.

JING Hongmiao1,LIAO Haili1,2,MA Cunming1,2,LI Zhiguo1,2

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Abstract:Aiming at boundary transition of a terrain model for wind field characteristics measurement, referring to the design theory of an aerospace vehicle, the continuity principle applying for the boundary transition of the terrain model was proposed, namely coordinate continuity, first-order continuity, and second-order continuity.Depending on this principle, a kind of transitional curve based on the hyperbolic tangent function was also proposed and compared with slope transition and first-order transition (vidosinsky curve) using the CFD (computational fluid dynamics) numerical simulation method.Meanwhile, the proposed boundary transition with different lengths was studied, and the results indicate that with the increase of transitional length, the air flows over the boundary transition more fluently.The continuity principle and second-order curve proposed in this paper are of great significance for the design of boundary transition of a terrain model.

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wind field characteristics / terrain model / boundary transition / curve pattern / second-order continuity

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JING Hongmiao1,LIAO Haili1,2,MA Cunming1,2,LI Zhiguo1,2. A study on boundary transition of a terrain model for wind field characteristics measurement[J]. Journal of Vibration and Shock, 2020, 39(8): 178-185

References

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