fe.. 



UNCLASSIFIED 



SECUftlTY CLASSIFICATION OF THIS PAGE (When Data Entered) 



REPORT DOCUMENTATION PAGE 



1. REPORT NUMBER 



DTNSRDC-82/022 



2. GOVT ACCESSION NO. 



4. T[TLE (and Subtitle) 



STERN BOUNDARY-LAYER FLOW ON A 



THREE-DIMENSIONAL BODY OF 3:1 



ELLIPTIC CROSS SECTION 



^^•' ^^^I4j28i. 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



3. RECIPIENT'S CATALOG NUMBER 



5. TYPE OF REPORT 4 PERIOD COVERED 



Final 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORCsJ 



Nancy C. Groves 

 Garnell S. Belt 



Thomas T. Huang 



B. CONTRACT OR GRANT NUMSERfsJ 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



David W. Taylor Naval Ship Research 

 and Development Center 

 Bethesda, Maryland 20084 



Program Element 61152N 

 Project ZR 000 01 

 Work Unit 1542-103 



II. CONTROLLING OFFICE NAME AND ADDRESS 



12. REPORT DATE 



May 1982 



13. NUMBER OF PAGES 

 116 



U. MONITORING AGENCY NAME & ADDRESSfif di//Bron( Irom Controlling Olllce) 



15. SECURITY CLASS, (ol thia report; 



UNCLASSIFIED 



16. DISTRIBUTION ST ATEMEN T fo/ (h/s Reporf) 



APPROVED FOR PUBLIC RELEASE: DISTRIBUTION UNLIMITED 



17. DISTRIBUTION STATEMENT (of the abatract entered In Block 20, H different from Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Continue on n 



Three-Dimensional 

 Turbulent Boundary Layer 

 Thick Stern Boundary Layer 

 3:1 Elliptic Cross Section 



aide It neceaaary and Identify by block i 



20. ABSTRACT (Continue on reverae aide II neceaaary and Identify by block number) 



A comprehensive set of experimental pressure, velocity, and turbulence 

 data are presented across the stern of a three-dimensional model having 3:1 

 elliptic transverse cross sections. The axisymmetric displacement body con- 

 cept is extended to three-dimensions and the pressure and velocity data are 

 compared with the predictions of existing three-dimensional theoretical 

 methods. The surface pressures for the displacement body are found to model, 



(Continued on reverse side) 



DD I jan'73 1473 EDITION OF 1 NOV 65 IS OBSOLETE 



S/N 0102-LF-014-6601 



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SECURITY CLASSIFICATION OF THIS PAGE (When Data Bnlared) 



