NUMERICAL SIMULATION OF AIR-WATER FLOW IN BOTTOM OUTLET

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SHAMSAEI A.; SOLEYMANZADEH R.

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Journal Paper

Paper Information

Journal: INTERNATIONAL JOURNAL OF CIVIL ENGINEERING Year:2006 | Volume:4 | Issue:1 Page(s): 14-33

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Title

NUMERICAL SIMULATION OF AIR-WATER FLOW IN BOTTOM OUTLET

Author(s)

SHAMSAEI A. | SOLEYMANZADEH R. | Issue Writer Certificate

Keywords

TWO PHASE FLOW

BOTTOM OUTLET

CFD

AERATION

CAVITATION

Abstract

Flow regime in dam's BOTTOM OUTLET is divided in pressurized flow and free surface flow by the gate located for discharge control. Down stream tunnel involves high velocity Multi component Air -water flow studied by mathematical model. In this research work, we used Finite volume mixture TWO PHASE FLOW model. Because of high Reynolds number, standard two equations k-ε turbulence model was used. Model was verified by backward-facing step flow and results have been compared with experiments founded by Durst and Schmitt. Air demand ratio has been determined as function of Froude number at contracted section. Flow patterns have been compared at two categories of slug & stratified flows, Air mean concentration profile has been obtained at down stream tunnel. Comparison of flow pattern at two case with and without of AERATION was investigated. Pressure drop behind of the gate and formation of vortex flow after the gate section have been discussed. Measurement of flow discharge and determination of contraction coefficient of the gate was outlined.

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APA: Copy

SHAMSAEI, A., & SOLEYMANZADEH, R.. (2006). NUMERICAL SIMULATION OF AIR-WATER FLOW IN BOTTOM OUTLET. INTERNATIONAL JOURNAL OF CIVIL ENGINEERING, 4(1), 14-33. SID. https://sid.ir/paper/271720/en

Vancouver: Copy

SHAMSAEI A., SOLEYMANZADEH R.. NUMERICAL SIMULATION OF AIR-WATER FLOW IN BOTTOM OUTLET. INTERNATIONAL JOURNAL OF CIVIL ENGINEERING[Internet]. 2006;4(1):14-33. Available from: https://sid.ir/paper/271720/en

IEEE: Copy

A. SHAMSAEI, and R. SOLEYMANZADEH, “NUMERICAL SIMULATION OF AIR-WATER FLOW IN BOTTOM OUTLET,” INTERNATIONAL JOURNAL OF CIVIL ENGINEERING, vol. 4, no. 1, pp. 14–33, 2006, [Online]. Available: https://sid.ir/paper/271720/en

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