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다국어 초록 (Multilingual Abstract)

Flow pulsation in the gap connecting with two parallel channels is investigated by RANS and URANS approaches. The two parallel channels are connected by a small channel called for a gap. The parallel channels are designed to have different cross section area with its ratio of 0.5. Computations are conducted using a CFX 11.0 code. The bulk Reynolds number is 60,000. Predicted results are compared with the previous experimental data. Mean velocity profile at the center of gap region are compared with experiments for its validation. Spectral analysis on the lateral velocity in the center of the gap was performed. Auto correlation for the axial-flow velocity pattern was presented. The unsteady structure of the flow pulsation was visualized in the region of the gap in the parallel channel.

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목차 (Table of Contents)

Abstract
1. 서론
2. 수치해석
3. 결과 및 고찰
4. 결론

Abstract
1. 서론
2. 수치해석
3. 결과 및 고찰
4. 결론
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참고문헌

참고문헌 (Reference)

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3 Menter, F.R., "SAS Turbulence Modeling of Technical Flows" 687-, 2006

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5 Speziale, C.G., "Modeling of the Pressure Strain Correlation Tensor: An Invariant Dynamical Systems Approach" 227 : 245-272, 1991

6 Meyer, L., "Large-scale Turbulence Phenomena in Compound Rectangular Channels" 286-304, 1992

7 Lee, C.M., "Experimental Study on Turbulent Mixing in Two Parallel Channels" 604-609, 1998

8 Gencay, S., "Cross Flow Between Identical Subchannels Caused by a Severe Blockage" 127 : 33-45, 1991

9 "CFX-11 Solver Theory" Ansys Inc. 2007

10 Durbin, P.A., "A Reynolds Stress Model for Near-Wall Turbulence" 249 : 465-498, 1993