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Laser Pencil Beam Based Techniques for Visualization and Analysis of Interfaces Between MediaTraditional optical methods that include interferometry, Schlieren, and shadowgraphy have been used successfully for visualization and evaluation of various media. Aerodynamics and hydrodynamics are major fields where these methods have been applied. However, these methods have such major drawbacks as a relatively low power density and suppression of the secondary order phenomena. A novel method introduced at NASA Lewis Research Center minimizes disadvantages of the "classical" methods. The method involves a narrow pencil-like beam that penetrates a medium of interest. The paper describes the laser pencil beam flow visualization methods in detail. Various system configurations are presented. The paper also discusses interfaces between media in general terms and provides examples of interfaces.
Document ID
20000032359
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Adamovsky, Grigory
(NASA Lewis Research Center Cleveland, OH United States)
Giles, Sammie, Jr.
(Toledo Univ. OH United States)
Date Acquired
August 19, 2013
Publication Date
February 22, 1998
Publication Information
Publication: NASA University Research Centers Technical Advances in Aeronautics, Space Sciences and Technology, Earth Systems Sciences, Global Hydrology, and Education
Volume: s 2 and 3
Subject Category
Lasers And Masers
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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