REDUCTION OF SECTION DRAG BY BLOWIING THROUGH ROWS OF HOLES IN AREAS OF LAIMINAR SEPARATION BUBBLES

Authors

  • K. Horstmann
  • A. Quast
  • F. Hermanspann

Keywords:

Aerodynamics, Structures, Design

Abstract

Below Reynolds (Re) numbers of about 5 x 106, there may be laminar separation bubbles on wing sections and fuselages. The pressure distributions on the lower surface of a section is shown which involves laminar separation and reattachment. Also shown is a preliminary schematic of the flow conditions within a laminar separation bubble. Additionally, shown is a flow visualization sketch in the area of a separation bubble. Laminar separation bubbles are undesirable because they increase section drag through some not fully understood mechaniims.

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Issue

Vol. 7 No. 1 (1981)

Section

Articles

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