THEORETICAL INVESTIGATION AND CONTROL BY MEASURING TESTS ON THE BEHAVIOR OF THE THREE-DIMENSIONAL TURBULENT BOUNDARY LAYER ON AN ANNULAR WING AT VARIOUS INCIDENCES.
Abstract
A method is given which permits the determination of the essential parameters of turbulent boundary layers in three-dimensional flow over essentially convex surfaces. This allows the construction of the entire field of wall streamlines over the turbulent parts of a given surface and, in particular, the determination of separation and reattachment lines. The inner organization of separated areas included by these lines can be experimentally obtained with the help of three complementary methods: visualization by ointment tests, visualization with kerosene vapors, and interpretation of constant pressure ratio results. Once these data are know, it is relatively easy to calculate the wall friction by means of the integrated momentum and energy equations in longitudinal and transversal direction and thus obtain a knowledge of flow characteristics in three dimensions otherwise impossible to be correctly measured. Systematic tests on the distribution of the form parameter and on the inner organization of separated areas are necessary for practical applications of the results. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 15, 1963
- Accession Number
- AD0428671
Entities
People
- Ernest A. Eichelbrenner
- Rolf S. Hellerstrom
- Serge Angioletti
- Yves M. Grellier