University of Illinois Urbana-Champaign

Mechanics of a drop after striking a stagnant water layer

Wang, Raymond Chun-Tsung; Wenzel, Harry G., Jr.

Content Files
WangWenzel_1970.pdf

Permalink

https://hdl.handle.net/2142/90169

Description

Title
Mechanics of a drop after striking a stagnant water layer
Author(s)
  • Wang, Raymond Chun-Tsung
  • Wenzel, Harry G., Jr.
Contributor(s)
University of Illinois at Urbana-Champaign
Issue Date
1970-01
Keyword(s)
  • Water resources center
  • Water resources center--Illinois
  • Hydrology and hydraulics
  • Impact (rainfall)
  • Numerical analysis
  • Raindrops
  • Shear stress
  • Sheet flow
  • Soil erosion
  • Resistance
Date of Ingest
2016-05-25T19:27:40Z
Geographic Coverage
Illinois (state)
Abstract
This report represents a first step in the theoretical analysis of sheet flow with rainfall impinging on the free surface. This is a common occurrence in urban areas and many design procedures do not recognize the added resistance due to the rainfall. The analytical approach consists of the numerical solution of the Navier-Stokes equations, including surface tension as a boundary condition, using a Synthetic-Cell-Fluid scheme which rigorously conserves mass and momentum. The results include a maximum impact pressure model and a quantitative discussion of pressure distribution, boundary shear, the effect of surface tension, the free surface configuration, and the various forms of energy and its transformation during the impact process. Experiments were performed consisting of drop impact pressure measurements using various drop sizes, impact velocities and water layer depths. These data were used to successfully verify the theoretical work.
Publisher
University of Illinois at Urbana-Champaign. Water Resources Center
Type of Resource
text
Genre of Resource
Report (Grant or Annual)
Language
en
Permalink
http://hdl.handle.net/2142/90169
Sponsor(s)/Grant Number(s)
  • U.S. Department of the Interior
  • U.S. Geological Survey
Copyright and License Information
Copyright 1970 held by Raymond Chun-Tsung Wang, Harry G. Wenzel, Jr.

Owning Collections

Illinois Water Resources Center - Hydrology and Hydraulics PRIMARY