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Saturday, July 25, 2020 | History

4 edition of Transonic flow problems in turbomachinery found in the catalog.

Transonic flow problems in turbomachinery

[proceedings]

  • 83 Want to read
  • 21 Currently reading

Published by Hemisphere Pub. Corp .
Written in English

    Subjects:
  • Technology: General Issues

  • The Physical Object
    FormatUnknown Binding
    Number of Pages660
    ID Numbers
    Open LibraryOL8219064M
    ISBN 100891160698
    ISBN 109780891160694

    Calculation of transonic flow field solutions in high-speed turbomachinery stages is clearly one of the most formidable challenges to present-day capabilities in computational aerodynamics. A traditional approach to solution of. this complex problem has been taken. Description of the inviscid flow field is addressed first, boundary layer and.   The proper orthogonal decomposition (POD) technique is applied in the frequency domain to obtain a reduced-order model of the unsteady flow in a transonic turbomachinery cascade of oscillating blades. The flow is described by a inviscid—viscous model, i.e. a full potential equation outer flow model and an integral equation boundary layer model.

    Unsteady transonic aerodynamics is a field with many differences from its counterpart, steady aerodynamics. The first volume of its kind, this text presents eight chapters and includes more than references and figures. Physical phenomena associated with unsteady transonic flows / D.G. Mabey --Basic equations for unsteady transonic flow / David Nixon --Practical problems: airplanes / Atlee M. Cunningham Jr. --Basic numerical methods / Joseph L. Steger and William R. Van Dalsem --Computational methods for unsteady transonic flows / John W. Edwards and James L.

      A general eigenvalue theory on flow stability in turbomachinery is proposed with the emphasis on flow-instability onset. Based on this theory, a stall-inception model including the effects of complex solid geometry is developed for a multistage fan/compressors system. The present conference on air-breathing aircraft engine technology considers topics in inlet design, radial-flow turbomachinery, fuel injection and combustion systems, axial flow compressor design and performance, ramjet configurations, turbine flow phenomena, engine control and service life, fluid flow-related problems, engine diagnostic methods, propfan design, combustor performance and.


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Transonic flow problems in turbomachinery Download PDF EPUB FB2

Get this from a library. Transonic flow problems in turbomachinery: [proceedings]. [Thomas Charles Adamson; M F Platzer; Project Squid.; United States.

Air Force. Office of Scientific Research.; United States. Naval Air Systems Command.;]. Doi, Hirofumi, and Alonso, Juan J. "Fluid/Structure Coupled Aeroelastic Computations for Transonic Flows in Turbomachinery." Proceedings of the ASME Turbo Expo Power for Land, Sea, and Air.

Volume 4: Turbo ExpoParts A and by: This report contains the proceedings of the Workshop on Transonic Flow Problems in Turbomachinery held on Februaryat the Naval Postgraduate School, Monterey, California.

This workshop was co-sponsored by Project SQUID, Naval Air Systems Command and the Air Force Office of Scientific Research. This report contains the proceedings of the Transonic flow problems in turbomachinery book on Transonic Flow Problems in Turbomachinery held on Februaryat the Naval Postgraduate School, Monterey, California.

This workshop was co-sponsored by Project SQUID, Naval Air Systems Command and the Air Force Office of Scientific Research. The workshop participants included representatives from universities, Cited by: 1. reduced-order models of unsteady transonic viscous flows in turbomachinery Journal of Fluids and Structures, Vol.

14, No. 8 A fast higher-order integral equation method for solution of the full potential equation around airfoilsCited by: The present approach consists in a numerical 2nd order approximation of the real transonic flow problem (hyperbolic or elliptic) by an initial values problem of hyperbolic and parabolic nature respectively.

Blades, Computation, Design, Transonic flow, Turbomachinery, Flow (Dynamics), Approximation, Entropy, Pressure, Shock Computation. This paper presents a procedure to extend a recently developed fully three-dimensional inverse method for highly-loaded turbomachine blades into the transonic-flow regime.

In this inverse method, the required three-dimensional blade profile to produce a prescribed swirl schedule is determined iteratively using the blade boundary conditions.

Here is the list of books which will help you to learn turbomachinary from basics to advance. Turbomachinary performance analysis by R I Lewis. Fluod thermodynamics of Turbomachinary by S L Dixon. Principles of Turbomachinary by Seppo. Topics: Turbomachinery, Viscous flow, Blades, Flow (Dynamics), Compressors, Machinery, Turbines, Approximation, Boundary-value problems, Computational methods The Use of 3D Viscous Flow Calculations in the Design and Analysis of Industrial Centrifugal Compressors.

User Tools. Cart. Sign In. TURBOdesign1. TURBOdesign1 is an inviscid aero/hydrodynamic design software for turbomachinery blades based on a 3D inverse design method.

The code is applicable to all types of turbomachinery such as fans, pumps, compressors, turbines and torque converters in axial, mixed-flow. A single stage transonic axial compressor was equipped with a casing treatment consisting of axial slots per rotor pitch in order to investigate its influence on stall margin characteristics, as well as on the rotor near tip flow field, both numerically and experimentally.

Fluid Mechanics and Thermodynamics of Turbomachinery is the leading turbomachinery book due to its balanced coverage of theory and application. Starting with background principles in fluid mechanics and thermodynamics, the authors go on to discuss axial flow turbines and compressors, centrifugal pumps, fans, and compressors, and radial flow gas.

This paper presents a focusing schlieren system designed for the investigation of transonic turbine tip-leakage flows. In the first part, the functional principle and the design of the system are presented. Major design considerations and necessary trade-offs are discussed.

The key optical properties, e.g., depth of focus, are verified by means of a simple bench test. Straka P. () Higher Order Chimera Grid Interface for Transonic Turbomachinery Applications. In: Fořt J., Fürst J., Halama J., Herbin R., Hubert F.

(eds) Finite Volumes for Complex Applications VI Problems & Perspectives. Springer Proceedings in Mathematics, vol 4. Springer, Berlin, Heidelberg. First Online 09 July Very early in the history of turbomachinery development, rotor blades were found off-design conditions despite being inside the surge line.

unstalled flutter stalled flutter as unstalled supersonic flutter, subsonic/transonic stalled flutter, supersonic stalled % Surge Supersonic stalled flutter 50% Corrected mass flow 75% Operating line.

This is a transonic flow case for which experimental results are available in the literature to compare [7].At inflow Mach number of and angle of attack of degrees, the adapted meshes and Mach number contours for levels 2 and 3 are shown in Figure 3, along with the initial mesh increased sharpness of the shock regions is evident from the results.

Moore and Moore2solve the problem in a succession of steps of increasing complexity: inviscid flow with uniform inlet velocity, inviscid irrotational flow and finally viscous irrotational flow.

These methods developed by Spalding and other workers have not been widely used in turbomachinery flow problems to date. Axial flow turbine: kb: Turbomachinery Aerodynamics: LecPPT: Axial flow turbine - Degree of Reaction, Losses and Efficiency: kb: Turbomachinery Aerodynamics: LecPPT: Axial flow turbine - Performance characteristics,Axial turbine blades, Exit flow matching with nozzle: kb: Turbomachinery Aerodynamics: LecPPT.

Book Description. This festschrift in honor of Professor Budugur Lakshminarayana's 60th birthday-based on the proceedings of a symposium on Turbomachinery Fluid Dynamics and Heat Transfer held recently at The Pennsylvania State University, University Park-provides authoritative and conclusive research results as well as new insights into complex flow features found in the turbomachinery used.

Tip-leakage flows are known to be influenced by local flow details, leading to highly three-dimensional and rather complex flow structures. In compressible flows, e.g., transonic flows, the tip region is expected to be dominated by effects associated with supersonic flow, such as shock waves and expansion fans [4,8].Traditionally, schlieren photography has been used in turbomachinery.

Computational fluid dynamics (CFD) plays an essential role to analyze fluid flows and heat transfer situations by using numerical methods.

Turbomachines involve internal and external fluid flow problems in compressors and turbines. CFD at present is one of the most important tools to design and analyze all types of turbomachinery. The main purpose of this paper is to review the state of the.

Transonic Rotor/Stator Interaction Using a 3-D Linearised Unsteady Viscous Flow Model International Journal of Computational Fluid Dynamics, Vol. 16, No. 3 Improved Prediction of Turbomachinery Flows Using Near-Wall Reynolds-Stress Model.