Transactions of the Korean Society of Mechanical Engineers (대한기계학회논문집)
- Volume 13 Issue 2
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- Pages.287-298
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- 1989
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- 1225-5963(pISSN)
DOI QR Code
A Numerical Study on the Open Channel Flow with Plane Wall Jet Inlet Boundary Condition
평면벽면분류의 유입경계조건을 가지는 개수로 유동에 관한 수치적 연구
- Published : 1989.03.01
Abstract
A numerical work was performed to study the flow behaviors of the open channel type flow with its geometric boundary conditions being similar to that of the Multi-Stage-Flash evaporator with and without a baffle. For the analysis, two-dimensional steady turbulent flow was assumed and the widely known k-.epsilon. turbulence model was usded. SIMPLE algorithm and the power difference scheme were used for the numerical approach. Numerical results generally agree with the previous experimental results though there are some uncertainties at far downstream and near the free surface due to the three dimensionality of the flow and surface waves. Without a baffle, the flow has basically the shape of the submerged plane wall jet with its upper boundary at downstream being sharply curved toward the free surface. For the flow with a baffle, recirculation flow patterns are observed at the upper inlet portion and at the backside of the baffle. For the case without a baffle, it was also confirmed that the ratio between the liquid level and the gate opening height is the most important parameter to determine the flow behavior.
본 수치적 해석에서는 H
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