NUMERICAL SIMULATION OF CAVITATING TURBULENT FLOWS USING PRECONDITIONED ARTIFICIAL COMPRESSIBILITY METHOD

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NOROUZI H.; BAZZAZ ZADEH M.; SABET GHADAM F.

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Journal: JOURNAL OF COMPUTATIONAL METHODS IN ENGINEERING (ESTEGHLAL) Year:2011 | Volume:30 | Issue:1 Page(s): 15-30

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Title

NUMERICAL SIMULATION OF CAVITATING TURBULENT FLOWS USING PRECONDITIONED ARTIFICIAL COMPRESSIBILITY METHOD

Author(s)

NOROUZI H. | BAZZAZ ZADEH M. | SABET GHADAM F. | Issue Writer Certificate

Keywords

PRECONDITIONINGQ2

CAVITATIONQ1

MERKLEQ2

SPALART-ALLMARASQ2

Abstract

In this paper, numerical simulation of cavitating flow over hydrofoils is presented by the aid of Preconditioned Artificial compressibility Method for solving the multi-phase N-S equations. Dominant equations include conservation of mass, momentum and a liquid phase volume fraction transfer equation. Equation of volume fraction transfer is obtained on the basis of homogeneous equilibrium flow concept in modeling of multi-phase flows. Mass transfer between phases is simulated by the MERKLE model. To accelerate the convergence rate, the discrete equations are preconditioned. Third order Roe-based flux difference splitting and second order central differencing method respectively is utilized for convection and viscous term discretization. Effects of turbulence are simulated in terms of an eddy viscosity coefficient added to molecular coefficient of viscosity via SPALART-ALLMARAS model. To demonstrate the capabilities of the scheme, several single and two-phase test case problems are computed and the results are compared with experimental and numerical data. Computed results present the appropriate accuracy of algorithm. Results of single phase flow over NACA0012 hydrofoil at renolds number, 2.8e6 & 0, 6 angle of attack, are compared with experimental data .The capability of code for simulation of cavitating flows at various CAVITATION numbers and angle of attacks are presented via simulation of two phase flow over non-truncated & truncated modified NACA0009 hydrofoil at renolds number, 2.0 e6 & 0, 2.5 angle of attack & s = 1.0, 0.9, 0.8, 0.75, 0.6, 0.5, 0.4, 0.3. Then results are compared with experimental and numerical data. The results are in good agreement with the available data and other published computations.

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APA: Copy

NOROUZI, H., BAZZAZ ZADEH, M., & SABET GHADAM, F.. (2011). NUMERICAL SIMULATION OF CAVITATING TURBULENT FLOWS USING PRECONDITIONED ARTIFICIAL COMPRESSIBILITY METHOD. JOURNAL OF COMPUTATIONAL METHODS IN ENGINEERING (ESTEGHLAL), 30(1), 15-30. SID. https://sid.ir/paper/173614/en

Vancouver: Copy

NOROUZI H., BAZZAZ ZADEH M., SABET GHADAM F.. NUMERICAL SIMULATION OF CAVITATING TURBULENT FLOWS USING PRECONDITIONED ARTIFICIAL COMPRESSIBILITY METHOD. JOURNAL OF COMPUTATIONAL METHODS IN ENGINEERING (ESTEGHLAL)[Internet]. 2011;30(1):15-30. Available from: https://sid.ir/paper/173614/en

IEEE: Copy

H. NOROUZI, M. BAZZAZ ZADEH, and F. SABET GHADAM, “NUMERICAL SIMULATION OF CAVITATING TURBULENT FLOWS USING PRECONDITIONED ARTIFICIAL COMPRESSIBILITY METHOD,” JOURNAL OF COMPUTATIONAL METHODS IN ENGINEERING (ESTEGHLAL), vol. 30, no. 1, pp. 15–30, 2011, [Online]. Available: https://sid.ir/paper/173614/en

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