Document Details

Document Type : Thesis 
Document Title :
EXPERIMENTAL STUDY OF WAKE VORTEX FLOW AT HIGH ANGLES OF ATTACK
دراسة تجريبية لسريان المخر الدوامي عند زوايا الهجوم العالية
 
Subject : Faculty of Engineering - Department of Aeronautical Engineering 
Document Language : Arabic 
Abstract : Flow over slender axisymmetric bodies at high angles of attack exhibits the development of an asymmetric mode of wake vortex flow. The current thesis aims to perform detailed measurements and analysis of temporal and spatial scales inherent in the steady and unsteady wake vortex flow. Preliminary experimental work is directed to enhance the performance of wind tunnel employed measurements. These include measuring tunnel streamwise wall pressure distribution, mean flow velocity profiles in addition to turbulence intensity and its spectra. Detailed instantaneous three dimensional velocity fields are carried out using Tomo-PIV measurement technique at 40º angle of attack and different Reynolds number ranges from 1.0 x 104 to 4.5 x 104. Results show that the presence of two main asymmetric counter rotating vortices at all Reynolds number investigated. The Reynolds numbers affect the configuration of the two main vortices where vortex flipping observed at the lowest Reynolds number investigated. Time averaged quantities such as velocity vectors plots, vorticity contours and streamlines are calculated and presented. Averaged quantities are suffered from the expected smoothing of details that have short duration. Instantaneous flow field data such as streamlines shows possible interaction between the main vortices and model attached vortices. Also, the core of the two main vortices can be seen affected by the appearance of multiple vortex filaments. 
Supervisor : Dr. Salah Hafez 
Thesis Type : Master Thesis 
Publishing Year : 1434 AH
2013 AD 
Co-Supervisor : Dr. Khalid Juhany 
Added Date : Monday, March 11, 2013 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
سراج عمر الزهرانيALZHRANI, SERAJ OMARResearcherMaster 

Files

File NameTypeDescription
 35190.pdf pdf 

Back To Researches Page