On the drag of two-dimensional flow about a normal flat plate

Chih-yung Wen, Chih Hsien Chuang, Tzu Yao Lin

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


An experimental investigation of the two dimensional(2-D) flow normal to a flat plate at low to medium Reynolds numbers (ranging from 25 to 393 based on the breadth of the plate) is described. Both horizontal and vertical soap film tunnels are used to set up a truly 2-D experiment. The flow in the soap film is very thin and is a close approximation to 2-D flow. Momentum defect measurements are used to obtain the time averaged mean drag coefficient, (Formula presented), experienced by a normal flat plate via laser Doppler velocimetry. It is found that (Formula presented) ≅ 2.1 for the current Re range. The present data agree well with available nominally 2-D experimental results from previously published papers which were obtained in traditional towing tank, wind tunnel and water tunnel experiments with high plate aspect ratios. This measurement implies that the intrinsic 3-D motions in the previously nominally 2-D experiments are not significant on (Formula presented) and the computational fluid dynamics results from previously published papers which are reviewed have overestimated (Formula presented).
Original languageEnglish
Title of host publication36th AIAA Aerospace Sciences Meeting and Exhibit
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Publication statusPublished - 1 Jan 1998
Externally publishedYes
Event36th AIAA Aerospace Sciences Meeting and Exhibit, 1998 - Reno, United States
Duration: 12 Jan 199815 Jan 1998


Conference36th AIAA Aerospace Sciences Meeting and Exhibit, 1998
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Engineering(all)
  • Space and Planetary Science

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