TY - JOUR ID - 73081 TI - High Reynolds Viscous Flow Simulation Past the Elliptical Airfoil by Random Vortex Blob JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - Zafarmand, B. AU - Ghadirzad, N. AD - Department of Mechanical Engineering, Institute of Energy & Hydro Technology (IEHT), Mashhad, Iran AD - Department of Mechanical Engineering, Islamic Azad University of Mashhad, Mashhad, Iran Y1 - 2017 PY - 2017 VL - 30 IS - 12 SP - 1903 EP - 1910 KW - Turbulent viscous flow KW - Elliptical airfoil KW - Cylinder KW - Random Vortex Blob DO - N2 - In this paper, numerical simulation for a two-dimensional viscous and incompressible flow past the elliptical airfoil is presented by Random Vortex Blob (RVB). RVB is a numerical technique to solve the incompressible, two-dimensional and unsteady Navier-Stocks equations by converting them to rotational non-primitive formulations. In this method, the velocity vector at a certain point can be calculated without considering any grid around it, so the RVB method can be treated as a meshless method. Accordingly, the turbulent flow past a cylinder as well as an elliptical airfoil is investigated. In both cases, the obtained mean time velocities are compared with available numerical and experimental results where an acceptable agreement is observed. Having known the velocity field, by employing momentum balance, the drag and lift coefficients caused by flow past the elliptical airfoil with different diameter ratios and Re=105 are calculated and compared with experimental data where a good consistency is achieved. UR - https://www.ije.ir/article_73081.html L1 - https://www.ije.ir/article_73081_f12737fbefac88fb6e5464c46ac2dd36.pdf ER -