| Title |
A Study on the Corner Flow Characteristics in the Entrance Region of a Square Duct |
| Abstract |
Flow form makes a boundary layer under the influence of viscosity in corner of air conditioning duct, and efficiency is reduced of air conditioning system by developing a vorticity.For verifying the accuracy of vorticity flow form through comparing with vorticity equation and the data, we made a experimental duct to measure flow form according to the size of x/D.The rusult is as follows;Its is distinguished portential flow domain and boundary flow domanin by viscosity force which cause the developement of boundary layer on surface of duct when uniformity flow proceeds from the approach to the end of duct.There is not absolute uniformity flow for alteration velocity element. However, in the fully developed flow region, velocity profiles show parabolic destribution at laminar flow and show velocity distribution of a seventh of principle at turbulent flow. |