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Thursday, July 9, 2020 | History

3 edition of A three-dimensional Navier-Stokes stage analysis of the flow through a compact radial turbine found in the catalog.

A three-dimensional Navier-Stokes stage analysis of the flow through a compact radial turbine

James D. Heidmann

A three-dimensional Navier-Stokes stage analysis of the flow through a compact radial turbine

by James D. Heidmann

  • 27 Want to read
  • 12 Currently reading

Published by National Aeronautics and Space Administration in [Washington, D.C.?] .
Written in English

    Subjects:
  • Airplanes -- Motors.,
  • Jet transports.

  • Edition Notes

    Other titlesThree dimensional Navier Stokes stage analysis of the flow through a compact radical turbine
    StatementJames D. Heidmann.
    SeriesNASA technical memorandum -- 104420
    ContributionsUnited States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination11 p.
    Number of Pages11
    ID Numbers
    Open LibraryOL17110616M

    Briley, W. R., "An Analysis of Laminar Separation Bubble Flow Using the Navier Stokes Equations," Invited paper,Specialists Workshop on Unsteady, Three Dimensional and Separated Flow (Georgia Tech. Univ.), (Proceedings published by Purdue Univ.). The objective of this book is to present the fundamental principles of turbomachinery fluid-thermodynamic design process of turbine and compressor components, power generation and aircraft gas turbines in a unified and compact manner. The book provides senior undergraduate students, graduate students and engineers in the turbomachinery industry.

    Provides fundamental principles of Turbomachinery Flow Physics and Dynamic Performance Successful textbook in its 2nd rigorously updated and enhanced edition incl. new chapters dealing with laminar turbulent transition, turbulence and boundary layer Written by a leading expert in the field With this second revised and extended edition, the readers have a solid source of information for. Mass flow through the turbine is shown to be unidirectional albeit rippled the mass flow through the turbine averages at kg/s. Turbine power signal oscillates about MW. Retief () used scale model studies to determine the effect of increased wave height on the system. These results are compared to model results to determine modelFile Size: 7MB.

    Experimental Analysis of a NACA Airfoil Section Through Degree Angle of Attack at Low Reynolds Numbers for Use in Wind Turbine Analysis D. Holst, B. Church, G. Pechlivanoglou, E. Tüzüner, J. Saverin, C. N. Nayeri, C. O. Paschereit.   AbstractThis paper presents a performance evaluation of non-axisymmetric casing grooves combined with airflow injection in a transonic axial compressor with NASA Ro using three-dimensional Reynolds-averaged Navier-Stokes equations with the k-ε turbulence model. An axisymmetric casing groove was divided circumferentially into 36 non-axisymmetric : C. T. Dinh, K. Y. Kim.


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A three-dimensional Navier-Stokes stage analysis of the flow through a compact radial turbine by James D. Heidmann Download PDF EPUB FB2

Get this from a library. A three-dimensional Navier-Stokes stage analysis of the flow through a compact radial turbine. [James D Heidmann; United States. National Aeronautics and Space Administration.]. The preliminary design and CFD analysis of a high pressure Curtis wheel, used as a first stage in a steam turbine, are described.

Starting from a thermodynamic evaluation of the process, the steam. The meridional contouring of the flow path is designed to provide a concave upward streamline curvature through the last stage (see Fig.

To minimize the adverse pressure gradient experienced by the flow at the hub of the L-0 nozzle—and to reduce the outer wall flare angle—the L-1 stage is placed at a higher diameter relative to the L. The maximum turbine efficiency was % with rotational speed of rpm and turbine inlet temperature of K.

Kang [39] examined a two-stage radial turbine with the expansion ratio of the. Table shows a list of categorized losses in a large-scale steam turbine for thermal power stations.

Blade losses consist of entropy generations from friction, separations on surfaces of blade and end-walls, vortices, shock waves, and mixings of different flows in the flow fields of stator blades, rotor blades and inter-blade rows, inter-stage flow paths in front of the next by: 1.

The evolution of the secondary flow field in cases of axial turbine bladings is examined in the present work. Our secondary flow calculation method is successfully used, in an improved form including the complete meridional vorticity transport equation, to predict common viscous flow phenomena in axial turbines, such as high turning of the flow direction and jet-like velocity : J.

Kaldellis, P. Ktenidis. The vast majority of modern rocket turbine designs fall into these categories. In this study a parallelized unsteady three-dimensional Navier–Stokes analysis has been used to study the effects of tip clearance on the transient and time-averaged flow fields in a supersonic by: Radial force in implantable two-stage axial flow blood pump (Artificial Heart) is a major factor affecting the operation stability.

In order to investigate the transient operation characteristics of two-stage blood pumps, three-dimensional, unsteady numerical simulations were conducted by using the large eddy simulation (LES) model, PISO algorithm based on the sliding mesh technique in by: 2. This paper is focused on the design (from a 1-D to a fully 3-D level) of a novel two-stage radial-inflow turbine with a total power output less than kW starting from the experience gained with the design and analysis of a single-stage turbine.

Each stage was preliminarily designed by Author: Ambra Giovannelli, Erika Maria Archilei, Coriolano Salvini. of the Unsteady Flow Through the Fastrac Supersonic Turbine,” ASME Journal of Tiirbomachinery, Vol.No.

2, April, Venkateswaran, S., and Merkle, C. L., “Analysis of Preconditioning Methods for the Euler and Navier-Stokes Equations,” Von Karman Institute Lecture Series, MarchAmerican Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA TEMPORALLY AND SPATIALLY RESOLVED FLOW IN A TWO-STAGE AXIAL COMPRESSOR, PART 2 - COMPUTATIONAL ASSESSMENT Karen L.

Gundy-Burlet and Man Mohan Ral NASA Ames Research Center MoffettField,CA and R. Charles Stauter and Robert United Technologies Research Center East Hartford,CT Abstract Fluid dynamics of turbomachines are.

An experimental investigation of three-dimensional unsteady flow in an axial flow turbine. Analytical and experimental study of flow through an axial turbine stage with a nonuniform inlet radial temperature profile.

An analysis of propulsion options for transport of lunar materials to earth orbit. () Three-dimensional analysis of Marangoni flow and radial segregation in Ge x Si1-x melt with Czochralski configuration. Engineering with Computers() The rapid formation and dispersion of flammable zones within cylindrical vertical enclosures following the release of a fixed mass of hydrogen and other gaseous fuels Cited by:   As wind and solar power are subject to strong natural fluctuations, more and more countries are turning to pumped storage power plants to prepare for the increased use of renewable energy.

1,2 Pump-turbines, which operated both as a turbine for hydropower harvesting and, in the reversed direction, as a pump, is one of the crucial components of the pumped storage power by: Through computational fluid dynamics (CFD) and experimental verification, we investigated the flow characteristics and flow uniformity inside the conventional redox flow battery cell.

An analysis of the flow characteristics of the conventional flow frame revealed a non-uniform distribution of the flow discharged to the electrodes, owing to the.

Power generating machine I - Axial flow turbines- Stage losses and efficiency – Soderberg‟s correlation – Turbine flow characteristics Power absorbing machine I - Axial flow compressors, pumps, and fans – Three dimensional flow in axial turbo machines – theory of radial equilibrium –.

Mohammad Mehdi Rashidi is born in Hamedan, Iran in He received his Ph.D degree from Tarbiat Modares University, Tehran, Iran in He is a Professor of Mechanical Engineering (from Bu-Ali University, ), he works at Tongji University in Shanghai.

He has published two books: Advanced Engineering Mathematics with Applied Examples of MATHEMATICA Software () ( pages) (in.

NUMERICAL ANALYSIS The governing equations in the code, called AARDVARK, are the quasi-three-dimensional, unsteady, Navier-Stokes equations.

The equations have been written in the Generalized Equation Set (GES) format (a detailed description of the GES can be found in Ref. () Three-dimensional analysis of Marangoni flow and radial segregation in Ge x Si1-x melt with Czochralski configuration.

Engineering with Computers() Effects of entrance region transport processes on free convection slip flow in vertical microchannels with isothermally heated by:. A small turbine will often consist of a single-stage centrifugal compressor producing a pressure ratio as high asa single side combustor where temperatures of about 1,°F (°C) are reached, and radial-inflow turbines.Pulse detonation engines (PDEs) are new exciting propulsion technologies for future propulsion applications.

The operating cycles of PDE consist of fuel-air mixture, combustion, blowdown, and purging. The combustion process in pulse detonation engine is the most important phenomenon as it produces reliable and repeatable detonation waves.

The detonation wave initiation in detonation tube in Cited by: oil-free turbomachinery technology for regional jet, unsteady three-dimensional navier-stokes analysis of a hot streak transport through an axial high pressure turbine stage. castillon, l. / laroche, e. / sgarzi.