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Friday, July 17, 2020 | History

2 edition of Finite element analysis of transonic flows in cascades found in the catalog.

Finite element analysis of transonic flows in cascades

Akin Ecer

Finite element analysis of transonic flows in cascades

importance of computational grids in improving accuracy and convergence

by Akin Ecer

  • 256 Want to read
  • 14 Currently reading

Published by National Aeronautics and Space Administration, Scientific and Technical Information Branch, For sale by the National Technical Information Service] in Washington, D.C, [Springfield, Va .
Written in English

    Subjects:
  • Aerodynamics, Transonic,
  • Cascades (Fluid dynamics),
  • Finite element method

  • Edition Notes

    StatementAkin Ecer and Hasan U. Akay ; prepared for Lewis Research Center under grant NSG-3294
    SeriesNASA contractor report -- 3446
    ContributionsAkay, Hasan U, Lewis Research Center, United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch, Indiana University-Purdue University at Indianapolis
    The Physical Object
    Paginationiv, 107 p. :
    Number of Pages107
    ID Numbers
    Open LibraryOL16807031M

    Finite element analysis of transonic flows in cascades: importance of computational grids in improving accuracy and convergence / (Washington, D.C.: National Aeronautics and Space Administration, Scientific and Technical Information Branch ; [Springfield, Va. Try the new Google Books. Get print book. No eBook available. ; Barnes& Prentice-Hall, - Finite element method - pages. 0 Reviews. From inside the book. What people are saying - Write a review. We haven't found any reviews in the usual places. Contents. COMPRESSIBLE FLOW. 3. WISCOUS FLOWS.

    Abstract The prediction of the behaviour and the ultimate load for compressively stiffened aircraft shell structures is a very important non-linear analysis problem for engineers. Herein, finite element analysis and experimental tests are carried out for the buckling of aircraft stiffened fuselage panels.   DOI link for Finite Element Analysis. Finite Element Analysis book. Finite Element Analysis. DOI link for Finite Element Analysis. Finite Element Analysis book. By M Moatamedi, Hassan A. Khawaja. Edition 1st Edition. First Published eBook Published 20 July Pub. location Boca Raton.

    Transonic Flow Calculations Using Triangular Finite Elements Richard B. Pelz* and Antony Jamesonf Princeton University, Princeton, New Jersey This paper describes a technique for finding the numerical solution of the full potential equation for steady transonic flow about airfoils. 3. Transonic flow inside the VKI-1 turbine cascade. The flow inside the cascade was simulated on an unstructured triangular grid with 10' elements using Roe's upwind scheme. The pictures show a view of two grids joined at the periodic boundaries, as well as Mach contours overlaid by streamlines. Click to enlarge. 4. Subsonic flow past multi.


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Finite element analysis of transonic flows in cascades by Akin Ecer Download PDF EPUB FB2

Finite element analysis of transonic flows in cascades: Importance of computational grids in improving accuracy and convergence Article (PDF Available) August with 15.

Finite element analysis of transonic flows in cascades. Washington, D.C.: National Aeronautics and Space Administration, Scientific and Technical Information Branch ; [Springfield, Va.: For sale by the National Technical Information Service], Books.

AIAA Education Series; Library of Flight; Progress in Astronautics and Aeronautics; The Aerospace Press; Browse All Books; Meeting Papers; Standards; About; For Authors ; Vol Issue 9. No Access. Investigation of Transonic Flow in a Cascade Using the Finite Element by: Analysis of transonic flow through a cascade of airfoils is investigated using the finite element method.

Development of a computational grid suitable for complex flow structures and different types of boundary conditions is presented. An efficient pseudo-time integration scheme is developed for the solution of by:   American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA Cited by: The transonic cascade flow is calculated with an efficient and flexible Galerkin Finite Element method applied to the full potential equation in Artificial Compressibility form.

Some of the typical advantages of finite element techniques are demonstrated such as the use of higher order discretization with biquadratic elements besides the. The finite element method is applied for the solution of transonic potential flows through a cascade of airfoils.

Convergence characteristics of the solution scheme are discussed. Unsteady flow and flutter phenomena of turbomachinery cascades operating in the transonic regime are explored by a new numerical approach. The two dimensional unsteady Euler equations are used to model the transonic cascade flows, and the cascade blades are modeled as thin plates.

To minimize the discretization incompatibility, both the fluid and the solid domains are discretized using finite.

In this paper, the stall and choke flutter analyses of NACA unstaggered cascades in transonic viscous flows are presented by using a time domain approach. For the present time domain approach, a solution-adaptive finite volume method with rigid-deformable dynamic mesh treatment is adopted to solve the two-dimensional unsteady Navier-Stokes.

Experimental results in the cascade and in the cascade element yield a relative reduction of the total loss of 14 – 15% and an improvement of the isentropic efficiency of about 2%. In the numerical simulation of stationary viscous flow the total loss reduces by more than 5% and the isentropic efficiency increases by.

“A Linearized Unsteady Aerodynamic Analysis for Transonic Cascades”, Journal for Fluid Mechanics, Vol, pp– Google Scholar. Whitehead, D.S. (), “A Finite Element Solution of Unsteady Flow in Cascades”, International Journal for Fluid Mechanics, Vol, pp eBook Packages Springer Book Archive; Buy this book on.

This paper presents a new computational technique for transonic flow problem analysis. This method, named Modified FLIC Method, is based on a time-marching technique of FLIC (fluid in cell) method and employs triangular elements conventionally used in finite element method.

Analysis of three-dimensional, transonic, potential flow through a compressor rotor is investigated using the finite element method.

The formulation of the equations and the generation of the corresponding finite element grid are presented. A constant-coefficient solution scheme is applied for the efficient solution of these equations.

The finite element method (FEM), or finite element analysis (FEA), is a computational technique used to obtain approximate solutions of boundary value problems in engineering. Boundary value problems are also called field problems. The field is the domain of interest.

The work deals with numerical simulation of transonic flow in turbine cascade including heat transfer between fluid and blades.

The blades are considered either solid, with heat conduction, or with a cavity held at constant temperature above the total temperature of the fluid. The surface of blades is hydraulically smooth or rough. The mathematical model is based on Favre averaged Navier. An analysis and design method is developed for subsonic and transonic propellers.

Finite element techniques are used to discretize the full potential equation on a three-dimensional domain and the Newton-Raphson iteration method is used to solve the nonlinear equations. About this book. In recent years there have been significant developments in the development of stable and accurate finite element procedures for the numerical approximation of a wide range of fluid mechanics problems.

this valuable reference resource details the fundamentals of stabilised finite element methods for the analysis of steady. In this work is presented a finite volume full 3-D Navier-Stokes solver suitable for turbulent turbomachinery computations.

The code is applied to the analysis of the secondary flow patterns in a transonic turbine cascade at three different isentropic outlet Mach numbers; namely, Finite Element Analysis P.

Seshu ˘ ˇ No part of this book may be reproduced in any form, by mimeograph or any other means, without permission in writing from the publisher. ISBN The export rights of this book are vested solely with the publisher. Tenth Printing January, This technique can be applied to transonic flows with any complicated boundary shapes.

Three problems were solved in this paper, the first was a supersonic flow around a circular cylinder, the second was a transonic flow between tubrine blade cascades and the last was an unsteady flow in.

Very often books published on Computational Fluid Dynamics using the Finite Element Method give very little or no significance to thermal or heat transfer problems. From the research point of view, it is important to explain the handling of various types of heat transfer problems with different types of complex boundary conditions.Finite element analysis of transonic flows in cascades: importance of computational grids in improving accuracy and convergence / By Akin.

Ecer, Hasan U. Akay, IUPUI (Campus), United States.Finite element method is employed in the solution of full-potential equation for analyzing steady, transonic flows through a series of highly staggered cascades. Convergence characteristics and efficiency of the developed numerical procedure are discussed.

Accuracy of the mathematical model is investigated in terms of the employed computational.