Scaling unstable infiltration in the vadose zone

被引:15
作者
Culligan, PJ
Barry, DA
Parlange, JY
机构
[1] UNIV WESTERN AUSTRALIA, DEPT ENVIRONM ENGN, NEDLANDS, WA 6907, AUSTRALIA
[2] CORNELL UNIV, DEPT AGR & BIOL ENGN, ITHACA, NY 14853 USA
关键词
infiltration; centrifuge modeling; gravity fingering;
D O I
10.1139/cgj-34-3-466
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
This technical note examines the feasibility of physically modelling unstable water flow in the form of fingers in the vadose zone. A scaling analysis is performed based on published expressions for the width and velocity of fingers, as well as the distance between fingers. Particular reference is given to the use of a geotechnical centrifuge as an experimental apparatus far modelling this phenomenon. Initial results are presented for 1g and 10g fingers from a preliminary experimental program undertaken to explore the analysis. These results agree with the scaling analysis presented and indicate that finger scaling using centrifugal modelling techniques is possible.
引用
收藏
页码:466 / 470
页数:5
相关论文
共 20 条
[1]   LABORATORY TESTS OF A THEORY OF FINGERING DURING INFILTRATION INTO LAYERED SOILS [J].
BAKER, RS ;
HILLEL, D .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1990, 54 (01) :20-30
[2]   INFILTRATION UNDER PONDED CONDITIONS .4. AN EXPLICIT PREDICTIVE INFILTRATION FORMULA [J].
BARRY, DA ;
PARLANGE, JY ;
HAVERKAMP, R ;
ROSS, PJ .
SOIL SCIENCE, 1995, 160 (01) :8-17
[3]  
BARRY DA, 1994, 15TH WORLD CONGRESS OF SOIL SCIENCE, VOL 2A, TRANSACTIONS, P86
[4]   PHYSICAL MODELING OF A DISSOLVED CONTAMINANT IN AN UNSATURATED SAND [J].
COOKE, B ;
MITCHELL, RJ .
CANADIAN GEOTECHNICAL JOURNAL, 1991, 28 (06) :829-833
[5]  
Culligan-Hensley P.J., 1995, Geotechnical centrifuge technology, P196
[6]   STABILITY ANALYSIS OF WATER-MOVEMENT IN UNSATURATED POROUS MATERIALS .3. EXPERIMENTAL STUDIES [J].
DIMENT, GA ;
WATSON, KK .
WATER RESOURCES RESEARCH, 1985, 21 (07) :979-984
[7]   STABILITY ANALYSIS OF WATER-MOVEMENT IN UNSATURATED POROUS MATERIALS .1. THEORETICAL CONSIDERATIONS [J].
DIMENT, GA ;
WATSON, KK ;
BLENNERHASSETT, PJ .
WATER RESOURCES RESEARCH, 1982, 18 (04) :1248-1254
[8]   STABILITY ANALYSIS OF WATER-MOVEMENT IN UNSATURATED POROUS MATERIALS .2. NUMERICAL-STUDIES [J].
DIMENT, GA ;
WATSON, KK .
WATER RESOURCES RESEARCH, 1983, 19 (04) :1002-1010
[9]  
Glass R. J., 1988, Journal of Contaminant Hydrology, V3, P207, DOI 10.1016/0169-7722(88)90032-0
[10]   WETTING FRONT INSTABILITY IN UNSATURATED POROUS-MEDIA - A 3-DIMENSIONAL STUDY IN INITIALLY DRY SAND [J].
GLASS, RJ ;
CANN, S ;
KING, J ;
BAILY, N ;
PARLANGE, JY ;
STEENHUIS, TS .
TRANSPORT IN POROUS MEDIA, 1990, 5 (03) :247-268