HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Nearing, M. A. Articles by Holtz, R. D. Search for Related Content PubMed Articles by Nearing, M. A. Articles by Holtz, R. D. Agricola Articles by Nearing, M. A. Articles by Holtz, R. D.

Measurement of Force vs. Time Relations for Waterdrop Impact¹

ABSTRACT

Force vs. time relationships of waterdrop impact are important for understanding the process of erosion caused by soil splash. Waterdrop impact forces were measured for 3.31-, 3.83-, 4.51-, and 5.25-mm diam drops falling from a height of 14.0 m onto piezoelectric transducers with rise times of 2 and 5 µs. Peak forces occurred within 13 to 21 µs of initial contact, ranged from 1.0 to 3.8 N, and decreased to 0.5 N after approximately 100 µs. Average pressures under impact were calculated from the force measurements and an approximateion of waterdrop contact area as a function of time and decreased to 100 kPa after 50 µs. The results indicated that the times and magnitudes of the force of impact were poorly predicted from currently used models and that the compressional wave generated in the water upon impact is probably an important parameter in determining the level and time distribution of forces during impact.

¹ Contribution from the USDA-ARS National Soil Erosion Research Laboratory in cooperation with the Purdue Agric. Exp. Stn. Journal no. 10609.

² Agricultural Engineer and Soil Scientist, USDA-ARS National Soil Erosion Research Laboratory; and Prof., Dep. of Civil Engineering, Purdue Univ., West Lafayette, IN 47907.

Received for publication January 27, 1986.

This article has been cited by other articles:

				W. M. Cornelis, G. Oltenfreiter, D. Gabriels, and R. Hartmann Splash-Saltation of Sand due to Wind-Driven Rain: Vertical Deposition Flux and Sediment Transport Rate Soil Sci. Soc. Am. J., January 1, 2004; 68(1): 32 - 40. [Abstract] [Full Text] [PDF]