STEADY-STATE SALTATION IN AIR

被引：335

作者：

UNGAR, JE

HAFF, PK

机构：

[1] Division of Physics, Mathematics, and Astronomy 301–38, California Institute of Technology, Pasadena, California

来源：

SEDIMENTOLOGY | 1987年 / 34卷 / 02期

关键词：

D O I：

10.1111/j.1365-3091.1987.tb00778.x

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Coupled equations of motion for steady state saltation over an infinite plane are derived and solved for a simplified model of the grain‐surface impact process. Experimentally observed features of the wind velocity profile in saltation are qualitatively reproduced, including a diminution of the sub‐saltation layer mean wind speed, as the friction speed increases. In this model the surface impact velocity of the saltating grains remains relatively constant over a wide range of free‐stream shear stresses, and the grain mass flux increases with friction speed uf* less rapidly than uf3. Copyright © 1987, Wiley Blackwell. All rights reserved

引用

页码：289 / 299

页数：11

共 17 条

[1]

BAGNOLD RA, 1973, PHYSICS BLOWN SAND D

[2] DYNAMICS OF WIND EROSION .2. INITIATION OF SOIL MOVEMENT [J].

CHEPIL, WS .

SOIL SCIENCE, 1945, 60 (05) :397-411

[3] DYNAMICS OF WIND EROSION .3. THE TRANSPORT CAPACITY OF THE WIND [J].

CHEPIL, WS .

SOIL SCIENCE, 1945, 60 (06) :475-480

[4] WIND-TUNNEL STUDIES OF MARTIAN AEOLIAN PROCESSES [J].

GREELEY, R ;

IVERSEN, JD ;

POLLACK, JB ;

UDOVICH, N ;

WHITE, B .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1974, 341 (1626) :331-&

[5]

MITHA S, 1986, IN PRESS ACTA MECHAN

[6] SALTATION OF UNIFORM GRAINS IN AIR [J].

OWEN, PR .

JOURNAL OF FLUID MECHANICS, 1964, 20 (02) :225-242

[7] SUCCESSIVE AEOLIAN SALTATION - STUDIES OF IDEALIZED COLLISIONS [J].

RUMPEL, DA .

SEDIMENTOLOGY, 1985, 32 (02) :267-280

[8] FLUID TRANSPORT ON EARTH AND AEOLIAN TRANSPORT ON MARS [J].

SAGAN, C ;

BAGNOLD, RA .

ICARUS, 1975, 26 (02) :209-218

[9]

WERNER BT, 1985, UNPUB J APPL MECH

[10]

WERNER BT, 1986, IN PRESS JUN P ASCE

← 1 2 →