U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Dynamic Spreading of Drops Impacting Onto a Solid Surface.

Public Domain


Details

  • Personal Author:
    Cheng L
  • Description:
    A theoretical and experimental study of the behavior of drops impacting onto a dry solid surface was conducted. For drop sizes and velocities typically encountered with high-pressure sprays, the impacting drop flattens or spreads and then undergoes dampened vibratory motion until it becomes quiescent. Assuming that the impacting drop forms a flat disk, a theoretical maximum dynamic spread factor is derived in terms of the weber number of the spray and a correction factor c denoting deviation from the simple model. The optimum dynamic spread factor, and the value of c, depends upon the drop size and velocity and the nature of the drop and target surface. For water sprays impacting a dry, lightly dust-laden surface of bituminous coal, the dynamic coverage is about 10 times the static coverage because of the drop flattening upon impact, that is, adequate dynamic coverage can be achieved without saturating the surface. In a lightly dust-laden surface, the impacting drops essentially completely scavenge the particles in the swept area. [Description provided by NIOSH]
  • Subjects:
  • Series:
    Mining Publications
  • Document Type:
    Text
  • Genre:
    Journal Article
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Division:
    PRC - Pittsburgh Research Center
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    192-197
  • Volume:
    16
  • NIOSHTIC Number:
    nn:10000160
  • Citation:
    I&ec Process Design and Development 1977 Apr; 16:192-197
  • Federal Fiscal Year:
    1977
  • Peer Reviewed:
    False
  • Source Full Name:
    I&ec Process Design and Development, V. 16, April 1977, PP. 192-197
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
  • Download URL:
  • File Type:
    Filetype[PDF - 168.02 KB ]
PREVIOUS
ON THIS PAGE
Details
CDC STACKS serves as an archival repository of CDC-published products including scientific findings, journal articles, guidelines, recommendations, or other public health information authored or co-authored by CDC or funded partners.

As a repository, CDC STACKS retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP