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Test Investigation of Velocity Distribution Considering Snow Particles Participating

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Abstract:

This paper presents the fitting expressions of mean velocity profile and turbulence intensity for wind-snow coupling conditions. Different materials were adopted to simulate the roughness of saltation snow particles to get the distribution of wind velocity in the simple wind tunnel. Test results indicate that velocity profile obeys the logarithmic distribution; the turbulence intensity obeys power law distribution. The influence height of saltation snow particles to the velocity profile limited to 10 cm above from the bed surface.

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Info:

Periodical:

Key Engineering Materials (Volumes 439-440)

Pages:

1343-1348

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.439-440.1343

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Online since:

June 2010

Authors:

Ke Qin Yan, Xuan Yi Zhou, Ming Gu

Keywords:

Logarithmic Distribution, Means Velocity Profile, Simple Wind Tunnel, Turbulence Intencity Profile, Wind Snow Coupling Effect

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] 7m.

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[2] 6m.

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[3] 3m.

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5m 0. 5m fans 170C 260R 330C Suction outlet 260L 260C Fig. 4 measurement points distribution.

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[3] 2 Analysis of the test result.

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[1] The velocity profiles of one point with different roughness are given in figure 5.

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[2] Uniformity analysis of the tunnel Compare the velocity distribution among 170C, 260C and 330C to make sure if the velocity field is uniform around the test model. a) b).

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