Vortex Flow Visualization Using Colored and Fluorescent Dyes on Flat Plate Delta Wing with Leading Edge Extension
Abstract
A water tunnel study was conducted in the Wright Laboratory 2ft x 2ft water tunnel to examine the vortex flowfield about a 60 deg flat plate diamond delta wing with an 80 deg leading edge extension (LEX). Flood light illuminated colored dye and laser light sheet illuminated fluorescent dye were used to visualize light sheet illuminated fluorescent dye were used to visualize the wing and LEX vortex core trajectories and vortex breakdown locations. The fluorescent dye flow visualization technique proved to be an excellent tool for examining the structure of vortex breakdown in detail. Angle of attack was varied between 10 deg and 45 deg for sideslip angles of 0 deg, 5 deg, and 10 deg, and the freestream Reynolds number was approximately 31,000 based upon model length. At angles of attack above 10 deg and zero sideslip, interaction was observed between the LEX and wing vortices. At 30 deg angle of attack, asymmetric breakdown of the LEX vortices occurred. At sideslip angles of 5 deg and 10 deg, large asymmetries in the vortex flowfield were present.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1992
- Accession Number
- ADA251139
Entities
People
- Scott P. Lemay
Organizations
- Wright Laboratory