Discharge Coefficients of a Preswirl System in Secondary Air Systems-Reference-Cited by-同舟云学术

Discharge Coefficients of a Preswirl System in Secondary Air Systems

Published:2001-02-01 Issue:1 Volume:124 Page:119-124
ISSN:0889-504X
Container-title:Journal of Turbomachinery
language:en
Short-container-title:

Author:

Dittmann M.¹,Geis T.¹,Schramm V.¹,Kim S.¹,Wittig S.¹

Affiliation:

1. Lehrstuhl und Institut fu¨r Thermische Stro¨mungsmaschinen, University of Karlsruhe, 76128 Karlsruhe, Germany

Abstract

The discharge behavior of a “direct-transfer” preswirl system has been investigated experimentally. The influences of the pressure ratio and the swirl ratio as well as the influence of the receiver and stator geometry were investigated. The discharge coefficients of the preswirl nozzles are given in the absolute frame of reference. The definition of the discharge coefficient of the receiver holes is applied to the rotating system in order to consider the work done by the rotor. Numerical calculations carried out for a free expansion through the stationary preswirl nozzles show very good agreement with experimental data.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/turbomachinery/article-pdf/124/1/119/5755662/119_1.pdf

Reference11 articles.

1. Scricca, J. A., and Moore, K. D., 1997, “Effects of ‘Cooled’ Cooling Air on Pre-Swirl Nozzle Design,” Tech. Rep. NASA/CP-98-208527, Pratt & Whitney, Oct.

2. Meierhofer, B., and Franklin, C. J., 1981, “An Investigation of a Preswirled Cooling Airflow to a Turbine Disc by Measuring the Air Temperature in the Rotating Channels,” ASME Paper No. 81-GT-132.

3. Samoilovich, G. S., and Morozov, B. I., 1957, “Coefficients of Flow Through Pressure Equalizing Holes in Turbine Discs,” Teploenergetica, 8, pp. 16–23.

4. Meyfarth, P. F., and Shine, A. J., 1965, “Experimental Study of Flow Through Moving Orifices,” ASME J. Basic Eng., 87, pp. 1082–1083.

5. McGreehan, W. F., and Schotsch, M. J., 1988, “Flow Characteristics of Long Orifices With Rotation and Corner Radiusing,” ASME J. Turbomach., 110, pp. 213–217.

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