The flow of a thin liquid film on a stationary and rotating disk. I - Experimental analysis and flow visualizationThe mean thickness of a thin liquid film of deionized water with a free surface on a stationary and rotating horizontal disk has been measured with a nonobtrusive capacitance technique. The measurements were taken when the rotational speed was 0-300 RPM and the flow rate was 7.0-15.0 LPM. A flow visualization study of the thin film was also performed to determine the characteristics of the waves on the free surface. When the disk was stationary, a circular hydraulic jump was present on the disk. Surface waves were found in the supercritical and subcritical regions at all flow rates studied. When the rotational speed of the disk is low, a standing wave at the edge of the disk was present. As the rotational speed increased, the surface waves changed from the wavy-laminar region to a region in which the waves ran nearly radially across the disk on top of a thin substrate of fluid.
Document ID
19910054173
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Thomas, S. (Wright State Univ. Dayton, OH, United States)
Faghri, A. (Wright State Univ. Dayton, OH, United States)
Hankey, W. (Wright State University Dayton, OH, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1990
Subject Category
Fluid Mechanics And Heat Transfer
Meeting Information
Meeting: AIAA/ASME Thermophysics and Heat Transfer Conference