An overview of analytical models of saltation

doi:10.7522/j.issn.1000-694X.2024.00006

Journal of Desert Research ›› 2024, Vol. 44 ›› Issue (4): 14-23.DOI: 10.7522/j.issn.1000-694X.2024.00006

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An overview of analytical models of saltation

Fanmin Mei¹(), Qianwen Yang¹, Wang Li¹, Jin Su²

^1.School of Environmental and Chemical Engineering /, Xi'an Polytechnic University，Xi'an 710048，China
^2.School of Science, Xi'an Polytechnic University，Xi'an 710048，China

Received:2023-12-08 Revised:2024-01-06 Online:2024-07-20 Published:2024-08-29

Abstract

Abstract:

Several saltation models including Bagnold model， S?rensen model， and P?htz-Kok-Herrmann （PKH） model have been summarized by analyzing the development trend， model ideas， and problems. In contrast with Bagnold model， the Owen Type of saltation models just like S?rensen model and PKH model involve the parameterized solutions of wind profile equations over aeolian saltation layer and the parameterized motions of saltating particles. The S?rensen model is based on the parametric solution of the leapfrog trajectory equations reflecting the gas-solid coupling process as the main modeling strategy. More specifically and deeply， PKH model parameterizes the force and work rate balances； and the solution of wind profile equations； accordingly， providing new insights into apparent roughness， grain shear stress profile and impact threshold. The analytical saltation models can be improved by more accurate observations， reevaluation of saltation flux peaks， and parameterization of the effect of multi-scale wind on saltation flux.

Key words: saltation flux, aeolian saltating particle, model ideas, apparent roughness, airborne stress profile

CLC Number:

P931.3

Fanmin Mei, Qianwen Yang, Wang Li, Jin Su. An overview of analytical models of saltation[J]. Journal of Desert Research, 2024, 44(4): 14-23.

Figures/Tables 1

References 53

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An overview of analytical models of saltation

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References 53

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