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http://dx.doi.org/10.3795/KSME-B.2010.34.12.1061

Compressibility Effect in the Axisymmetric Internal Flow Past a Microgap  

Kim, Seong-Soo (Keyyang Precision Co.)
Chang, Se-Myong (School of Mechanical and Automotive Engineering, Kunsan Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.34, no.12, 2010 , pp. 1061-1069 More about this Journal
Abstract
In this study, a simplified axisymmetric model is proposed for the problem of compressible internal flow past a microgap. Using numerical and experimental methods, the phenomena of choked flows are observed; these flows are induced by the acceleration of subsonic flows past the narrow cross-section of an annular shape made by a microgap. The relation between mass flow rate and differential pressure is obtained, and by comparing the result with experimental results, the reliability of the numerical results is discussed. The generation of a supersonic jet flow and its diffraction are visualized by performing the numerical analysis of axisymmetric compressible Navier-Stokes equations. This investigation greatly extends the physical understanding of the axisymmetric compressible flow, which has a wide range of engineering applications, e.g., in the case of valves in automotive power systems.
Keywords
Compressible Flow; Micro Gap; Internal Flow;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 0
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