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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of computational fluids engineering
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Journal DOI :
Korea Society of Computational Fluids Engineering
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Volume & Issues
Volume 6, Issue 4 - Dec 2001
Volume 6, Issue 3 - Sep 2001
Volume 6, Issue 2 - Jun 2001
Volume 6, Issue 1 - Mar 2001
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CFD Model of the Base Flow on Axi-symmetric Nacelle Using Singularities
Baik Doo Sung ; Han Young Chool ;
Journal of computational fluids engineering, volume 6, issue 2, 2001, Pages 1~8
Despite the massive effort which has been given to the analysis of the base flows, one commonly occurring case seems to be overlooked. This is for base (rearward facing surface) which is between a subsonic flow and supersonic flow. Potential flows of the air and gas streams are computed for the flow past a separated wake. Then a viscous jet mixing is superimposed on this inviscid solution. Conservation of mass, momentum and energy is achieved by multiple iterations. Despite the iterations, the wake flow field is computed with modest computer requirements.
FLAP DEFLECTION OPTIMZATION FOR TRANSONIC CRUISE PERFORMANCE IMPROVEMENT OF SUPERSONIC TRANSPORT WING
Kim Hyoung-Jin ; Obayashi Shigeru ; Nakahashi Kazuhiro ;
Journal of computational fluids engineering, volume 6, issue 2, 2001, Pages 9~21
Numerical Analysis on Flow Phenomena of the Wake behind the Rectangular Obstacle in the Channel
Min Yeong-Ui ; Kim Yeon-Soo ; Kim You-Gon ;
Journal of computational fluids engineering, volume 6, issue 2, 2001, Pages 22~31
The two-dimensional unsteady incompressible viscous flow behind rectangular bluff bodies between two parallel plates was analyzed numerically. The steady state flow and the vortex flow behind rectangular bluff bodies in the channel were investigated for two regimes i.e., the laminar(Re = 100, 300, 500) and the turbulent flows(Re = 10⁴∼10/sup 6/). The vortex shedding was generated by a physical disturbance(6%) numerically imposed at the rear of the bluff bodies for a short time. It was observed that the perturbed flow became periodic after a transient period. And in the case of unsteady inflow, the sinusoidal pulsatile flow was applied as the inlet condition in the turbulent flow of Reynolds number of 1.0×10/sup 5/. FLUENT code was employed to solve the problems. The power-law scheme was used to get stable linearized equations and the PISO algorithm was applied to finding the solution of them.
Numerical Study on Hypersonic Characteristics of the KSR-Ⅲ Payload
Lee J. Y. ;
Journal of computational fluids engineering, volume 6, issue 2, 2001, Pages 32~39
Hypersonic analysis on the KSR-Ⅲ payload configuration has been performed using an axisymmetric Navier-Stokes code. A numerical code based on the Harten and Yee's upwind TVD scheme with simplified curve fits in the chemically reacting equilibrium air was developed. The carbuncle phenomenon on detached shock in front of the payload is controlled by using pressure gradients to tune the dissipation. Chemically reacting equilibrium computations for the reentry flight conditions of Mach No. 10.2, 8, 4.9 are presented and compared with the results of calorically perfect gas.
Numerical Study of slot injection into turbulent supersonic flow on adaptive meshes
Kim J. R. ; Kim I. T. ; Kim J. S. ;
Journal of computational fluids engineering, volume 6, issue 2, 2001, Pages 40~46
Two-dimensional steady flowfields generated by slot injection into supersonic flow are numerically simulated by the integration of Navier-stokes equation with two-equation κ-turbulence model. High-order upwind scheme is used on unstructured adaptive meshes. The numerical results are compared with experimental data in terms of surface static pressure distributions, the length of the upstream separation region, and the height of the Mach surface for steady flowfields with a Mach number of 3.71 and a unit Reynolds number of 5.83×10/sup 6//m.
Performance Analysis of a CFD Code in Several PC Cluster Systems
Cho K. W. ; Hong J. ; Lee S. ;
Journal of computational fluids engineering, volume 6, issue 2, 2001, Pages 47~55
In recent years cluster systems using off-the-shelf processors and networks components have been increasing popular. Since actual performance of a cluster system varies significantly for different architectures, representative in-house codes from major application fields were executed to evaluate the actual performance of systems with different combination of CPU, network, and network topology. As an example of practical CFD(Computational Fluid Dynamics) simulations, the flow past an Onera-M6 wing and the flow past an infinite wing were simulated on clusters of Linux and several other hardware environments.