Use of Holographic Interferometry in Mass Transfer          Measurement
{'Code': '07020000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CBET', 'LongName': 'Div Of Chem, Bioeng, Env, & Transp Sys'}}
{'SignBlockName': 'George P. Peterson', 'PO_EMAI': None, 'PO_PHON': None}
Measurements of convective heat transfer are often very difficult               to make.  In certain situations, it is easier to measure the rate               of mass transfer and then to convert the results to heat transfer               by using the analogy between the two processes.  One of the most                oft-used mass transfer techniques is the sublimation of                         naphthalene.  In the past, the degree of sublimation has been                   measured by using a stylus-type instrument to measure the contour               of the subliming surface.                                                                                                                                       The present proposal is directed toward the investigation of the                use of optical techniques, specifically holographic                             interferometry, to measure the surface contour.  If successful,                 greater accuracy will result and, even of greater importance,                   surface shapes will be able to be dealt with which were beyond                  the capabilities of stylus-type instruments.
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{'Code': '140600', 'Text': 'TTP-Thermal Transport Process'}
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