Measurements of a rectangular jet.
Chan, Yen Shun.
Date of Issue2009
School of Mechanical and Aerospace Engineering
In this project, the flow characteristics of an unconfined rectangular jet, aspect ratio 20 running at velocity of 25m/s is being investigated. The results obtained shows that the flow was able to achieve self similar in the mixing layer at x/D= 4 for both Umean and Urms profile for the single wire experiments. Self preservation occurred at x/D=6 for the Umean profile in the interaction region while the Urms profile was unable to show any self preservation. For the cross wire, both U and V velocity vectors are being measured. Self similarity for Umean, Urms and Vrms were achieved at x/D=4 within the mixing layer. Self preservation was only observed for Umean profile at x/D= 4 in the mixing layer. The decay rate and spread rate were tabulated and compared with the past results and a relationship of a bigger aspect ratio will result in a higher decay and spread rate was able to be seen.
DRNTU::Engineering::Mechanical engineering::Fluid mechanics
Final Year Project (FYP)
Nanyang Technological University