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Thursday, May 7, 2020 | History

2 edition of Test cases for numerical methods in two-dimensional transonic flows. found in the catalog.

Test cases for numerical methods in two-dimensional transonic flows.

R. C. Lock

Test cases for numerical methods in two-dimensional transonic flows.

by R. C. Lock

  • 36 Want to read
  • 27 Currently reading

Published by Agard in Neuilly sur Seine .
Written in English


Edition Notes

Prepared at the request of the Fluid Dynamics Panel of AGARD.

SeriesAgardreport -- 575
ContributionsAdvisory Group for Aerospace Research and Development. Fluid Dynamics Panel.
ID Numbers
Open LibraryOL20307487M

  The interaction of a normal shock wave with a turbulent boundary layer developing over a flat plate at free-stream Mach number M ∞ = and Reynolds number Re θ ≈ (based on the momentum thickness of the upstream boundary layer) is analysed by means of direct numerical simulation of the compressible Navier–Stokes equations. The computational methodology is based on Cited by: ICAS CONGRESS NUMERICAL INVESTIGATION OF THREE-DIMENSIONAL TRANSONIC FLOW WITH LARGE SEPARATION M.A. Leschziner1 and H. Loyau2 1 Queen Mary and Westfield College, University of London, UK 2 Aircelle, Harfleur, France .

Computational fluid dynamics (CFD) is a branch of fluid mechanics that uses numerical analysis and data structures to analyze and solve problems that involve fluid ers are used to perform the calculations required to simulate the free-stream flow of the fluid, and the interaction of the fluid (liquids and gases) with surfaces defined by boundary conditions. Numerical simulation has been widely employed to investigate the compressible flows since it is difficult to carry out the experimental measurements, especially in the reactive flows. The shock-wave capturing scheme will be necessary for resolving the compressible flows, and moreover the careful treatments of chemical reaction should be considered for proceeding numerical simulation stable and Cited by: 1.

Four test cases examine the effectiveness of this architecture that combines SUAVE with a gen- erative Bayesian Network. First, a simple beam design illustrates how multiple valid solutions may be found. Next, are two cases, that design with differing levels of complexity to compare against an existing medium-range airliner. Computational fluid dynamics (CFD) is a branch of fluid mechanics that uses numerical analysis and data structures to solve and analyze problems that involve fluid flows. Computers are used to perform the calculations required to simulate the interaction of liquids and gases with surfaces defined by boundary conditions. With high-speed supercomputers, better solutions can be achieved.


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Test cases for numerical methods in two-dimensional transonic flows by R. C. Lock Download PDF EPUB FB2

Carlson L.A. () Test Problems for Inviscid Transonic Flow. In: Rizzi A., Viviand H. (eds) Numerical Methods for the Computation of Inviscid Transonic Flows with Shock Waves.

Notes on Numerical Fluid Mechanics, vol by: 1. Bailey F.R. () On the ‘computation of two- and three-dimensional steady transonic flows by relaxation methods. In: Wirz H.J. (eds) Progress in Numerical Fluid Dynamics. Lecture Notes in Cited by: of two-dimensional, inviscid, compressible, transonic flows.

Em­ phasis is put on the treatment of shocks. I will support my argu­ ments with some numerical experiments on two-dimensional flows in ducts.

Whatever the range of Mach numbers, indeed, such flows pro­. efficient than iterative solution. Test cases include duct, cascade, and isolated airfoil flows, and demonstrate the speed and robustness of the method.

The accuracy of the solutions is verified by comparison against values obtained analytically, experimentally and by other numerical methods. High order finite volume schemes for numerical solution of 2D and 3D transonic flows Article (PDF Available) in Kybernetika -Praha- 45(4) January with Reads How we measure 'reads'.

Numerical Computation of Transonic Flows with Shock Waves. a von Neumann test based on the local values of the T est cases for numerical methods in two dimensional transonic flow, A : Antony Jameson. Transonic flow computations using nonlinear potential methods Terry L.

Holst *'1 most successful numerical methods of solution for trans-onic flow applications, at least for potential formulations, cal two-dimensional transonic, inviscid flow field compuled us-ing a full potential algorithm.

The numerical results show that the transonic shock formed within the sonic circle C 1 carries its strength all the way to the vertical wall of the wedge. We denote ρ w to be the density inside the transonic shock at the vertical wall so that across the transonic shock at the wall, the density has a jump [ρ] = ρ w-ρ calculate ρ w by finding the intersection of the extrapolations from Author: Eun Heui Kim, Chung-min Lee.

Most numerical methods for the solution of transonic potential flow use fi- nite differences, upwinding in the density and line relaxation, and often apply Received by the editor Octo and, in revised form, Ma Numerical experiments have confirmed that A.

Jameson, W. Schmidt, Recent developments in numerical methods for transonic flows they do assist convergence. The terms added to the mass and momentum equations are ap(H - Hoc), apu(H H, while that added to the energy equation is ap(H - H^).Cited by: @article{osti_, title = {Efficient iterative methods applied to the solution of transonic flows}, author = {Wissink, A M and Lyrintzis, A S and Chronopoulos, A T}, abstractNote = {We investigate the use of an inexact Newton`s method to solve the potential equations in the transonic regime.

As a test case, we solve the two-dimensional steady transonic small disturbance equation. () Numerical solutions of transonic two-dimensional flows at a ninety-degree wedge.

Communications in Nonlinear Science and Numerical Simulation() The two-dimensional Riemann problem for Chaplygin gas dynamics with three constant by: () Numerical solutions to the self-similar transonic two-dimensional nonlinear wave system. Mathematical Methods in the Applied SciencesCited by: The computation of complex turbulent flows by statistical modelling has already a long history.

The most popular two-equation models today were introduced in the early sev­ enties. However these models have been generally tested in rather academic cases. The develope­ ment of computers has led to. Numerical Computation of Transonic Flows Some recent developments in numerical methods for calcuting solutions to the transonic poten-tial flow equation are reviewed, including (1) the construction of stable coordinate independent Consider a two dimensional flow past a profile, Let u, v and q be the velocity components and.

Includes material on 2-D inviscid, potentialand Euler flows, 2-D viscous flows, Navier-Stokes flows to enable the reader to develop basic CFD simulations. Accompanied by downloadable computer code for the numerical solution of 1-D convection and convection — diffusion problems, plus test cases.

Some Recent Developments in Numerical Methods for Transonic Flows, Comp. Meth. in Applied Mech. and Eng. 51 () – CrossRef zbMATH ADS MathSciNet Google Scholar Bradshaw, P. et al Engineering Calculation Methods for Turbulent Flow, Academic Author: Wolfgang Schmidt.

Get this from a library. Computation and Comparison of Efficient Turbulence Models for Aeronautics - European Research Project ETMA. [Alain Dervieux; Marianna Braza; Jean-Paul Dussauge] -- The computation of complex turbulent flows by statistical modelling has already a long history.

The most popular two-equation models today were introduced in the early sev enties. The second test case is a highly loaded gas turbine cascade operating in transonic flow at design and off-design conditions.

This case is characterized by a normal shock appearing on the rear part of the blades’s suction surface, and is very sensitive to small changes in flow by: [1] We provide a numerical procedure for the simulation of two-phase immiscible and incompressible flow in two- and three-dimensional discrete-fractured media.

The concept of cross-flow equilibrium is used to reduce the fracture dimension from n to (n-1) in the calculation of flow in the fractures. This concept, which is often referred to as the.

flow using a conformal mapping technique. For transonic flows, the two principal approaches are potential methods and hodograph methods. The potential methods, such as the GRUMFOIL code of Volpe and Melnik,4 solve the nonlinear, isentropic, full-potential equations in the physical plane.

The hodograph methods, of which the method by Bauer et al.Bo¨lcs, A.,“A Test Facility for the Investigation of Steady and Unsteady Transonic Flows in Annular Cascades,” ASME Paper No. GT 9. Carstens, V., Bo¨lcs, A., and Ko¨rba¨cher, H.,“Comparison of Experimental and Theoretical Results for Unsteady Transonic Cascade Flow at Design and Off-Design Conditions,” ASME Cited by: Numerical Computation of Internal and External Flows Volume 2: Computational Methods for Inviscid and Viscous Flows C.

Hirsch, Vrije Universiteit Brussel, Brussels, Belgium This second volume deals with the applications of computational methods to the problems of fluid dynamics.