Statistical Inferences of Lift-Off Velocity Distribution Function Form for Saltating Particles

Abstract:

Article Preview

The lift-off velocity distribution of saltating particles, which have been proposed to characterize the dislodgement state of saltating particles, is one of the key issues in the theoretical study of windblown sand transportation. But there were various statistical relations in the early researches. In this paper, the Kolmogorov-Smirnov test for goodness-of-fit is adopted to make an inference of the most probable form of lift-off velocity distribution functions for saltating particles on the basis of the experimental data. The statistical results show that the distribution function of vertical lift-off velocities conforms better to Weibull distribution function than to the normal, log-normal, gamma and exponential ones; while, the distribution function of the absolute values of horizontal lift-off velocities is best described by log-normal distribution in forward direction and Weibull distribution in backward direction, respectively. Finally, two more examples prove to support the above conclusions.

Info:

Periodical:

Advanced Materials Research (Volumes 108-111)

Edited by:

Yanwen Wu

Pages:

783-788

DOI:

10.4028/www.scientific.net/AMR.108-111.783

Citation:

J. J. Wu and L. H. He, "Statistical Inferences of Lift-Off Velocity Distribution Function Form for Saltating Particles", Advanced Materials Research, Vols. 108-111, pp. 783-788, 2010

Online since:

May 2010

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.