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Numerical simulation of interior flow field in 90°curved duct based on SMAC method |
Key Laboratory for River Dynamics and Hydraulic Engineering, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China)
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Abstract Based on the SMAC method and staggered-mesh technology, a numerical algorithm used for simulating incompressible flow was developed in the body-fitted curvilinear coordinate. The Navier-Stokes equation was solved with contravariant velocities and pressure as unknown variables for the interior incom- pressible flow of the three dimensional 90°curved duct of square cross-section with radius Rr = 2.3. The results indicate that the SMAC method has strong forecasting ability to the flow of duct with strong curvature, and can accurately simulate the mainstream and secondary flow. So the validity and reliability of the present algorithm are proved.
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