Numerical Simulation of Real-Gas Flow in a Supersonic Turbine Nozzle Ring-Reference-Cited by-同舟云学术

Numerical Simulation of Real-Gas Flow in a Supersonic Turbine Nozzle Ring

Published:2002-03-26 Issue:2 Volume:124 Page:395-403
ISSN:0742-4795
Container-title:Journal of Engineering for Gas Turbines and Power
language:en
Short-container-title:

Author:

Hoffren J.¹,Talonpoika T.²,Larjola J.²,Siikonen T.³

Affiliation:

1. Laboratory of Aerodynamics, Helsinki University of Technology, P.O. Box 4400, FIN-02105 HUT, Finland

2. Department of Energy Technology, Lappeenranta University of Technology, P.O. Box 20, FIN-53850 Lappeenranta, Finland

3. Laboratory of Applied Thermodynamics, Helsinki University of Technology, P.O. Box 4400, FIN-02105 HUT, Finland

Abstract

In small Rankine cycle power plants, it is advantageous to use organic media as the working fluid. A low-cost single-stage turbine design together with the high molecular weight of the fluid leads to high Mach numbers in the turbine. Turbine efficiency can be improved significantly by using an iterative design procedure based on an accurate CFD simulation of the flow. For this purpose, an existing Navier-Stokes solver is tailored for real gas, because the expansion of an organic fluid cannot be described with ideal gas equations. The proposed simulation method is applied for the calculation of supersonic flow in a turbine stator. The main contribution of the paper is to demonstrate how a typical ideal-gas CFD code can be adapted for real gases in a very general, fast, and robust manner.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Link

http://asmedigitalcollection.asme.org/gasturbinespower/article-pdf/124/2/395/5890533/395_1.pdf

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3. Pitka¨nen, H. P., 1997, “The CFD Analysis of the Impeller and Vaneless Diffuser of an Industrial Water-Treatment Compressor,” ASME International Mechanical Engineering Congress & Exposition, Dallas, TX, Nov. 16–21.

4. Honkatukia, J., 1996, private communication.

5. Larjola, J., and Nuutila, M., 1995, “District Heating Plant Converted to Produce Also Electric Power,” Paper 228 E, 27th Unichal Congress, Stockholm, June 12–14.

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