Experimental and Theoretical Comparison of Two Swirl Brake Designs-Reference-Cited by-同舟云学术

Experimental and Theoretical Comparison of Two Swirl Brake Designs

Published:2000-02-01 Issue:2 Volume:123 Page:353-358
ISSN:0889-504X
Container-title:Journal of Turbomachinery
language:en
Short-container-title:

Author:

Nielsen K. K.¹,Childs D. W.²,Myllerup C. M.¹

Affiliation:

1. Machinery Dynamics Group, O̸degaard & Danneskiold-Samso̸e A/S, Copenhagen, Denmark

2. Turbomachinery Laboratory, Mechanical Engineering Department, Texas A&M University, College Station, TX 77843

Abstract

Experimental and theoretical data are presented for two interchangeable swirl brakes designed in connection with the Space Shuttle Main Engine (SSME) Alternate Turbopump Development (ATD) High-Pressure Fuel Turbopump (HPFTP) program. The experimental data includes rotordynamic data for a extensive variation of test variables. Comparison of the swirl brake performance revealed that a nonaerodynamic swirl brake design proved as efficient and at times better than an aerodynamic design. For this reason a theoretical investigation using computational fluid dynamics (CFD) was recently carried out. This modeling focused on predicting the seal inlet swirl ratio which is the primary swirl brake performance parameter. The nonaerodynamic swirl brake showed superior performance for a variety of test variable conditions. Strong separation vortices within the swirl vanes are the main reason for this finding.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/turbomachinery/article-pdf/123/2/353/5602281/353_1.pdf

Reference10 articles.

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2. Nielsen, K. K., 1997, “Rotordynamic Impact of Swirl Brakes,” Diploma Course Report 1997-28, von Karman Institute for Fluid Dynamics, Rhode-St-Gene`se, Belgium.

3. Nielsen, K. K., Van den Braembussche, R. A., and Myllerup, C. M., 1998, “Optimization of Swirl Brakes by Means of a 3D Navier-Stokes Solver,” ASME Paper No. 98-GT-328.

4. Nielsen, K. K., Myllerup, C. M., and Van den Braembussche, R. A., 1999, “Parametric Study of the Flow in Swirl Brakes by Means of a 3D Navier-Stokes Solver,” C557/088/99/, Transactions of the Third European Conference on Turbomachinery, pp. 489–498.

5. Childs, D. W., and Ramsey, C., 1990, “Seal-Rotordynamic-Coefficient Test Results for a Model SSME ATD-HPFTP Turbine Interstage Seal With and Without a Swirl Brake,” ASME J. Tribol., 113, pp. 198–203.

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