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http://dx.doi.org/10.3795/KSME-B.2002.26.7.997

Passive Control of the Condensation Shock Wave Using Bleed Slots  

Baek, Seung-Cheol (경북대학교 대학원 기계공학과)
Kwon, Soon-Bum (경북대학교 기계공학부)
Kim, Heuy-Dong (안동대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.26, no.7, 2002 , pp. 997-1004 More about this Journal
Abstract
The current study describes experimental and computational works on the passive control of the steady and unsteady condensation shock waves, which are generated in a transonic nozzle. The bleed slots are installed on the contoured wall of the transonic nozzle in order 10 control the magnitude of the condensation shock wave and its oscillations. For computations, a droplet growth equation is copuled with two-dimensional Navier-Stokes equation systems. Computations are carried out using a third-order MUSCL type TVD finite-difference scheme with a second-order fractional time step. Baldwin-Lomax turbulence model is employed to close the governing equations. An experiment using an indrafi transonic wind tunnel is made to validate the computational results. The current computations represented well the experimental flows. From both the experimental and computational results it is found that the magnitude of the condensation shock wave in the bleed slotted nozzle is signi ficantly reduced, compared with no passive control of solid wall. The oscillations of the condensation shock wave are successfully suppressed by a bleed slot system.
Keywords
Compressible Flow; Condensation Shock Wave; Passive Control; Transonic Nozzle; Non-equilibrium Condensation;
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