Air entrained flow characteristics in partially filled closed conduits

Orhon, Mine


Optimization of aeroelastic flapping motion of thin airfoils in a biplane configuration for maximum thrust
Kaya, Mustafa; Tuncer, İsmail Hakkı; Jones, Kevin D.; Platzer, Max F. (2007-01-01)
An aeroelastic flapping motion of thin airfoils in a biplane configuration is optimized for maximum thrust. Airfoils are attached to swing arms by an elastic joint, which is model led by a torsional spring. A spring-mass system is employed for the aeroelastic coupling. The stiffness coefficient and the mass moment of inertia of the airfoil are optimized for maximum thrust. A gradient based optimization method is employed in a parallel computing environment. Unsteady, low speed flows are computed in parallel...
Implementation of ball-center spring analogy mesh deformation technique with CFD design optimization
Yang, Yosheph; Özgen, Serkan (2015-01-01)
© 2015, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.Mesh deformation technique plays an important role in several numerical simulations and applications including design optimization. This paper aims to implement the developed unstructured mesh deformation technique for CFD Design Optimization around 2-D Airfoils. During the optimization procedure, the newly deformed mesh is generated by using the updated Ball-Center Spring analogy mesh deformation technique. The compar...
Incompressible flow simulations using least squares spectral element method on adaptively refined triangular grids
Akdağ, Osman; Sert, Cüneyt; Department of Mechanical Engineering (2012)
The main purpose of this study is to develop a flow solver that employs triangular grids to solve two-dimensional, viscous, laminar, steady, incompressible flows. The flow solver is based on Least Squares Spectral Element Method (LSSEM). It has p-type adaptive mesh refinement/coarsening capability and supports p-type nonconforming element interfaces. To validate the developed flow solver several benchmark problems are studied and successful results are obtained. The performances of two different triangular ...
Air-entrainment in high speed free surface flows.
Kökpınar, Mehmet Ali; Göğüş, Mustafa; Department of Civil Engineering (1996)
Numerical analyses of flow characteristics in the vicinity of spillway aerators
Kurt, Can; Tokyay Sinha, Talia Ekin; Department of Civil Engineering (2016)
Spillway aerators are used in the spillways that are designed to carry medium to high discharges during their operation. Aerators are aimed to reduce the risk of cavitation in these high velocity flows. Most of the time, design of these aerators are based on physical models and experimental results. However, with the advancement in computational resources, it became possible to analyze the effect of aerators using computational fluid dynamics (CFD). To this end, three-dimensional numerical simulations of su...
Citation Formats
M. Orhon, “Air entrained flow characteristics in partially filled closed conduits,” Ph.D. - Doctoral Program, Middle East Technical University, 1989.