An interactive grid generation procedure for axial and radial flow turbomachinery

Cover of: An interactive grid generation procedure for axial and radial flow turbomachinery |

Published by National Aeronautics and Space Administration, For sale by the National Technical Information Service in [Washington, DC?], [Springfield, Va .

Written in English

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Subjects:

  • Turbomachines -- Aerodynamics -- Mathematical models.,
  • Numerical grid generation (Numerical analysis)

Edition Notes

Book details

StatementTimothy A. Beach.
SeriesNASA contractor report -- 185167., NASA contractor report -- NASA CR-185167.
ContributionsUnited States. National Aeronautics and Space Administration.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL15276222M

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An Interactive Grid Generation Procedure for Axial and Radial Flow Turbomachinery ' Timothy A. Beach Sverdrup Technology, Inc. NASA Lewis Research Center Group Cleveland, Ohio Ab t rac t A combination algebraic/elliptic technique is presented for the generation of three dimensional grids about turbomachinery blade rows for both axial and radial.

Get this from a library. An interactive grid generation procedure for axial and radial flow turbomachinery. [Timothy A Beach; United States. National Aeronautics and. Abstract. There are two basic types of turbine suitable and used at present in turbochargers, the radial flow and the axial flow.

The radial flow turbine is mainly used for small automotive or truck turbochargers; the axial type is commonly used for the large turbochargers applied to medium-speed stationary and railway traction engines and large marine : N.

Watson, M. Janota. Timothy A. Beach has written: 'An interactive grid generation procedure for axial and radial flow turbomachinery' -- subject(s): Aerodynamics, Numerical grid generation (Numerical analysis.

Beach, T. A.,“An Interactive Grid Generation Procedure for Axial and Radial Flow Turbomachinery,” AIAA Paper No. Bindon, J. P., a, “Visualization of Axial Turbine Tip Clearance Flow Using a Linear Cascade,” CUED/A-Turbo TREngineering Department, Cambridge University, United by: simulate flow in a turbine cascade on the grid generated by the program.

Introduction An interactive grid generation program called TURBO is being developed to generate well-structured grids for flow field simulations in turbomachinery. This program, which uses the control point form of algebraic grid generation [l], providesCited by: 2. Axial Flow and Radial Flow Gas Turbines INTRODUCTION TO AXIAL FLOW TURBINES The axial flow gas turbine is used in almost all applications of gas turbine power plant.

Development of the axial flow gas turbine was hindered by the need to obtain both a high-enough flow rate and compression ratio from a compressor to.

Beach, T. A.,“An Interactive Grid Generation Procedure for Axial and Radial Flow Turbomachinery,” AIAA Paper No. Fan, S.,“Computation and Turbulence Modeling of Unsteady Flows Due to Rotor/Stator Interaction in Turbomachines,” Ph.D.

Thesis, Department of Aerospace Engineering, The Pennsylvania State by:   Axial gas turbine technology is the dominant and appropriate configuration for large gas turbines.

Major power plants and industrial plants deploy axial gas turbines to provide power and heat for district heating, process, facilities and electricity to the grid. Less discussed, though, are the lower power ranges where both axial and radial gas turbines are available.

It is. Full text of "BladeCAD: An Interactive Geometric Design Tool for Turbomachinery Blades" See other formats NASA Technical Memorandum BladeCAD: An Interactive Geometric Design Tool for Turbomachinery Blades Perry L. Miller IV and James H.

Oliver Iowa State University Ames, Iowa David P. Miller and Daniel L. Tweedt Lewis Research Center. This is the first completely new book for more than a decade specifically devoted to axial and radial turbine design and technology.

It starts with the fundamental principles of turbine design, but also includes the latest developments and understanding, including the essential role that computer-based analysis plays by: 7. The video is part of Grid Generation for CFD Analysis of Turbomachinery blog.

It describes the mesh generation for the periodic sector and is copy rotated to. This text covers the basic principles of turbomachinery in a clear, practical presentation that ties theory logically and rigorously with the design and application part of turbomachines such as centrifugal compressors, centrifugal pumps, axial flow compressors, steam and gas turbines, and hydraulic contents of the book have been designed to meet the requirements of 4/5(3).

The radial-inflow turbine is a rugged turbine, designed to run under severe gas conditions and applied in internal combustion engines, natural gas, diesel, and gasoline power units. Since the radial-inflow turbine has a higher tip speed than an axial turbine, the amount of work produced by a.

This book provides a thorough description of actual, working aerodynamic design and analysis systems, for both axial-flow and radial-flow turbines. It describes the basic fluid dynamic and thermodynamic principles, empirical models and numerical methods used for the full range of procedures and analytical tools that an engineer needs for Cited by: Grid clustering near the plates does a better job of capturing the unsteady flow field than cases using uniform grids as long as the CFL number is less than one for a sufficient portion of the grid.

Finally, a solution based on an optimization of grid, CFL number and boundary conditions shows good agreement with linear by: 4. The paper also highlights the typical problems faced by a numerical analyst from grid generation point of view and briefly describes a procedure for handling the problems.

Application of a Lower-Upper Implicit Scheme and an Interactive Grid Generation for Turbomachinery Flow Field Simulations. Axial-Flow and Radial-Flow Turbine Design. A new reduced order through-flow analysis system for the preliminary design of axial turbomachines is presented.

It has flexible models for losses, deviation, blockage, etc., uses real gas/liquid thermodynamics and handles flow and geometry at three spanwise locations.

It is applicable to both compressors and. The axial-flow turbine geometry was chosen because it allows operation at low pressure ratios, as required for efficient extraction of power directly from a gas flow.

In contrast, previous work on micro-turbines has focused mainly on radial-flow designs [2,3]. Axial-flow devices are more difficult to realise by microfabrication because the. An interactive grid generation procedure for axial and radial flow turbomachinery turbo-machinery blade rows for both axial and radial flow machinery.

necessary to. The Two-Element In Series (TEIS) and Two-Zone models have been used successfully for over twenty years to model test data for radial flow compressors and pumps. The models can also be used to predict the performance of new machines provided that the model inputs can be accurately specified.

Unfortunately, use of the TEIS and Two-Zone models as a predictive tool Cited by: 2. more interactive method of determining the effects of balance weight placement is desirable. An interactive balancing procedure is outlined and implemented in an Excel spreadsheet. The usefulness of this interactive approach is highlighted in balancing case studies of a GE LM gas turbine and an industrial fan.

of the most widely-used turbomachinery geometry codes, CCAD® and AXCAD®, as well as COMIG® and TAXIG™. Pow-erful features are available for axial, mixed-flow and radial geometries and these can be combined to design almost any single or multistage turbomachine that can be conceived.

Blading features, from the simplest to theFile Size: 1MB. AXIAL AND RADIAL TURBINES HOW DO THEY COMPARE IN THE 1-TO-3 MW POWER RANGE. 32 Turbomachinery International • November/December An all radial 2 MW range gas turbine: The OP16 Axial and Radial Turbines CAREB qxd 11/16/ AM Page File Size: 56KB.

Axial-flow Turbines: 2-D theory 01 03 01 03 Actual work output tt Ideal work output when operating to same back pressure ss hh hh η − == − Turbine stage total to total efficiency: 01 03 1 3 01 03 1 3 tt ssss hh hh hh hh η −− == −− For a normal stage, no changes in are made in velocities from inlet to Size: KB.

Fluid Mechanics and Thermodynamics of Turbomachinery is the leading turbomachinery book due to its balanced coverage of theory and application.

An axial turbine is a turbine in which the flow of the working fluid is parallel to the shaft, as opposed to radial turbines, where the fluid runs around a shaft, as in a axial turbine has similar construction as an axial compressor, but it operates in the reverse, converting flow of the fluid into rotating mechanical energy.

A set of static guide vanes or nozzle vanes. The results have been extensively validated for a wide range of turbomachinery applications [9].

9th International Conference on Hydrodynamics OctoberShanghai, China Fig.8a Automatic grid generation Fig.8b CFD solution post-processing Finite element analysis Mechanical analysis is an integral part of turbomachinery by: 4.

the understanding of radial equilibrium theory (2D design) and its application in order to obtain a good radial design of the turbine in study; and the un-derstanding of the process of airfoil choosing (3D ge-ometry).

In fact, contained in the items previously presented, is also the study of historical trends andFile Size: KB. Leng, Yujun, "Preliminary design tools in turbomachinery: Non-uniformly spaced blade rows, multistage interaction, unsteady radial waves, and propeller horizontal-axis turbine optimization" ().

Open Access Dissertations. Cited by: 3. Renewable energy topics were added to the fourth edition of this book by way of the Wells turbine and a new chapter on hydraulic turbines. Some of the derivatives of the Wells turbine have now been added to the chapters on axial flow and radial flow tur-bines.

It is likely that some of these new developments will flourish and become a major. Computational fluid dynamics simulation and turbomachinery code validation of a high pressure ratio radial-inflow turbine Odabaee, Mostafa, Sauret, Emilie, & Hooman, Kamel () Computational fluid dynamics simulation and turbomachinery code validation of a high pressure ratio radial-inflow by: 2.

Axial-flow turbines are used in most applications involving compressible fluids. 1 They power most gas turbines except the smaller ones. Their efficiency is higher than radialinflow turbines in most operating ranges. Axial-flow turbines are also used in steam turbine applications.

Design and Analysis of Stator, Rotor and Blades of Axial flow Compressor | ISSN: Axial-flow compressors are used in medium to large thrust For generation of geometry SOLID WORKS software is used. The blade profile coordinates are exported the software. A software tool for parametric design of turbomachinery blades.

which will be compatible with grid generation and analysis software on the one hand and CAD or software, based on a 3D inverse design method.

The software is applicable to all types of turbomachinery, such as radial, mixed-flow and axial-flow machines, rotating and Cited by: Extensive Flow Investigation of a Single-Stage Axial Flow Turbine design system.

A method for very fast and accurate flow calculation and performance prediction of multistage axial flow turbines at design and off-design conditions was developed by the author.

The through-flow code is based on a stream function model and a finite element solutionAuthor: Milan Petrovi. The focus of this dissertation is on turbomachinery blade vibration measurements and unsteady fluid-structure interactions.

Vibration of turbomachinery blades are critical to jet engine durability and performance. The combined high natural frequency of the vibrations and long service life of modern jet engines can result in high cycle : Paul Louis Mikrut.

igns, this is a simple matter of altering impeller geometry and rotational speed to achieve the desired pressure rise and flow rate. However, this particular pump was limited by housing geometry and the magnetic bearings that support the impeller. Without much freedom in the overall impeller size, the only parameters open to the designers were the blade profiles and.

Radial Flow Gas Turbines 64 Radial outflow turbine. 65 Radial Inflow turbines These turbines provide greater amount of work per stage, ease of manufacture, and Ruggedness. Efficiency is equal to the best of those of axial turbines.

Main disadvantage is requirement of advanced techniques for rotor cooling and shock resistance Commonly used in File Size: 2MB. This flow distribution results in a constant axial velocity component and also in a uniform radial distribution of the specific energy and, consequently, in highly twisted blades.

Table 2 shows the main cascade design data for radial stations (Fig. 3); the absolute velocity and the relative flow angles obtained through the velocity triangles. Gradient-based optimization methods have been used in turbomachinery applications to optimize axial compressor and turbine configurations, ranging from isolated blade rows [7,8,9,10] including hub endwall contouring [11,12] to multi-row and multi-stage architectures [13,14,15,16].In most cases, the geometry is parameterized by Hicks–Henne shape functions [], free-form Cited by: 7.

In the previous article, the author talked about how Parsons used new machining tools and techniques to make gears, and the application of the steam turbine in electric generators. Here, he discusses the first axial flow compressor. Parsons thought correctly after he had invented the reaction steam turbine that the expansion process could be reversed and a .Computational Investigation and Design Study of Adaptive Axial-Flow Turbomachinery Rotor Blade Muthuvel Murugan, Anindya Ghoshal, Luis Bravo, Fei Xu, Ming-Chen Hsu, Yuri Bazilevs, Kevin Kerner May 8, Your Path: Home > Computational Investigation and Design Study of Adaptive Axial-Flow Turbomachinery Rotor BladeAuthor: Muthuvel Murugan, Anindya Ghoshal, Luis Bravo, Fei Xu, Ming-Chen Hsu, Yuri Bazilevs, Kevin Kerner.

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