Accession Number : AD0013194


Title :   DESIGN AND OPERATION OF A ROTATING CYLINDER APPARATUS FOR RAREFIED GAS DYNAMICS RESEARCH


Descriptive Note : Technical rept.


Corporate Author : CALIFORNIA UNIV BERKELEY INST OF ENGINEERING RESEARCH


Personal Author(s) : Maslach, G J ; Frisch, J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/013194.pdf


Report Date : 30 Apr 1953


Pagination or Media Count : 21


Abstract : A high-speed rotating-cylinder apparatus is described for studying gas-surface interaction phenomena. The concrete enclosure is equipped with a hand-operated overhead hoist to handle the balance and drive mechanism prior to vacuum operation. During operation, measurements of drag, pressure, and rotor velocity can be made outside the enclosure. The instrument can be used to provide a shear flow field for the development of instrumentation for nonuniform streams or boundary layers. Initial tests indicated that the apparatus was satisfactory over a wide range of flow conditions from the continuum region (M/Re1/100) to the free molecular flow region (M/rE10).


Descriptors :   *DRIVES , *RAREFIED GAS DYNAMICS , MOLECULES , VACUUM , BOUNDARY LAYER , FLOW FIELDS , NONUNIFORM , SHEAR PROPERTIES , RANGE(EXTREMES) , DRAG , GAS SURFACE INTERACTIONS , STREAMS , VELOCITY , INSTRUMENTATION


Subject Categories : Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE