Download or read book A Numerical Study of the Turbulent Flow Around Airfoils written by Vincent DeHenau and published by . This book was released on 1987 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Numerical Study of Separated Turbulent Flow Over Airfoils written by Ananthanarayanan Sugavanam and published by . This book was released on 1979 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Numerical Simulation of Turbulent Flow Over an Airfoil Via Additive Turbulent Decomposition written by Yunpeng Yang and published by . This book was released on 1996 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Calculation of Boundary Layers Near the Stagnation Point of an Oscillating Airfoil written by Tuncer Cebeci and published by . This book was released on 1983 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of an investigation of boundary layers close to the stagnation point of an oscillating airfoil are reported. Two procedures for generating initial conditions - the characteristics-box scheme and a quasi-static approach - were investigated, and the quasi-static approach was shown to be appropriate provided the initial region was far from any flow separation. With initial conditions generated in this way, the unsteady boundary-layer equations were solved for the flow in the leading-edge region of a NACA 0012 airfoil oscillating from 0 degrees to 5 degrees. Results were obtained for both laminar and turbulent flow, and, in the latter case, the effect of transition was assessed by specifying its occurrence at different locations. The results demonstrate the validity of the numerical scheme and suggest that the procedures should be applied to calculation of the entire flow around oscillating airfoils. (Author).

Download or read book A Numerical Study of Viscous Flows Around Airfoils written by J. C. Wu and published by . This book was released on 1977 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of an integro-differential approach in the numerical study of unsteady viscous flows about airfoils is described. Two different procedures are presented. A procedure based on a stream function-vorticity formulation and on a transformation technique is used in a study of a flow about an impulsively started 9% thick Joukowski airfoil at an angle of attack of 15 deg and a Reynolds number of 1000. Numerical results are presented and compared with available finite-difference results. A second procedure based on a velocity-vorticity formulation and on a hybrid finite difference-finite element technique is used in a study of a flow about an oscillating 12% thick Joukowski airfoil at a Reynolds number of 1000. With either procedure, the unique ability of the integro-differential approach to confine the solution field to the vortical region of the flow is utilized. It is shown that this ability offers great computational advantages. (Author).

Download or read book A Numerical Study of the Flow Past an Isolated Airfoil with Separation written by Chae-Myung Rhie and published by . This book was released on 1981 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fluent Simulation of Airflow Around Airfoils written by Chunlin Liu and published by . This book was released on 2008 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical simulation of flow past airfoils is important in the aerodynamics design of aircraft. The complex commercial computational fluid dynamics software FLUENT provide a convenient way to model fluid flow dynamics problem. To test accuracy of CFD in predicting Lift and Drag coefficient under a wide range of flow conditions. In this thesis, numerical simulation of steady flow around NACA 0012 was conducted using control volume approach in Gambit and Fluent at three different Reynolds Number(Re), 1.0x10[superscript]6, 3.0x10[superscript]6 and 5x10[superscript]6. Lift and drag coefficient were measured for an attack angle between 0[degree] and 16[degree] in 2[degree] intervals. The purpose of this study was to establish a verified solution method in the subsonic and transonic flow regimes around airfoil. The results from FLUENT model were found closely to the published experimental data except for the stall point of the airfoil. The flow field is determined by solving two-dimensional incompressible Navier-Stokers equations while the effects of turbulence are accounted for by the Spalart-Allmaras model. Boundary layer developed at the surfaces of the airfoil is investigated together with relevant pressure and velocity contours for different Attack angle and Reynolds Number. This study shows that CFD can provide accurate predictions under the flow conditional scheduling.

Download or read book Numerical Simulation of Transonic Flow Around Airfoils at High Reynolds Numbers Using Algebraic Turbulence Models written by Jaakko Hoffren and published by . This book was released on 1990 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Numerical Study of Transonic Flow Over Oscillating Airfoils Using the Full Potential Equation written by Koji Isogai and published by . This book was released on 1978 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of Low speed Turbulent Separated Flow Around Airfoils written by and published by . This book was released on 1987 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Elements of Vorticity Aerodynamics written by James C. Wu and published by Springer. This book was released on 2017-12-27 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book opens with a discussion of the vorticity-dynamic formulation of the low Mach number viscous flow problem. It examines the physical aspects of the velocity and the vorticity fields, their instantaneous relationship, and the transport of vorticity in viscous fluids for steady and unsteady flows. Subsequently, using classical analyses it explores the mathematical aspects of vorticity dynamics and issues of initial and boundary conditions for the viscous flow problem. It also includes the evolution of the vorticity field which surrounds and trails behind airfoils and wings, generalizations of Helmholtz’ vortex theorems and the Biot-Savart Law. The book introduces a theorem that relates the aerodynamic force to the vorticity moment and reviews the applications of the theorem. Further, it presents interpretations of the Kutta-Joukowski theorem and Prandtl’s lifting line theory for vorticity dynamics and discusses wake integral methods. The virtual-mass effect is shown to be the seminal event in unsteady aerodynamics and a simple approach for evaluating virtual-mass forces on the basis of vorticity dynamics is presented. The book presents a modern viewpoint on vorticity dynamics as the framework for understanding and establishing the fundamental principles of viscous and unsteady aerodynamics. It is intended for graduate-level students of classical aerodynamics and researchers exploring the frontiers of fully unsteady and non-streamlined aerodynamics.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Numerical Study of the Turbulent Flow Over a Backward Facing Step Using a Two Equation Turbulence Model written by Larry Peter Hackman and published by . This book was released on 1982 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Numerical Study of Incompressible Viscous Flow Around Airfoils written by Sarangan Sampath and published by . This book was released on 1977 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Numerical Study of General Viscous Flows Around Multi element Airfoils written by C. M. Wang and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Numerical Study of Separated Turbulent Flows written by David C. Wilcox and published by . This book was released on 1974 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Turbulent Flows about Oscillating Airfoils written by J. C. Wu and published by . This book was released on 1978 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: A two-equation differential model of turbulence has been studied in detail and used in conjunction with a integro-differential approach for the numerical solution of separated flow problems. A number of turbulent flow problems have been solved numerically and the results obtained have been compared with available experimental data. The most significant result of this research is that a versatile and highly efficient approach has been made available for numerically solving complex turbulent flow problems. The cornerstone of this research project is the integro-differential approach developed by the principal investigator and his co-workers. (Author).