The effect of jet diameter on the local heat transfer from an impingement jet cooling on a concave surface simulating the leading edge of a turbine blade internal cooling surface was analyzed numerically. The study examined the flow pattern and local heat transfer distribution along the concave surface at the leading edge with jet diameter, D, of 10, 5,2.5,1.2 ,0.6 and 0.4 (mm) at a fixed Reynolds number of 8,450. The results show that as the jet diameter decreases, the internal flow pattern changes from a large single swirl vortex to multiple vortices and Nusselt number decreases as jet diameter decreases.
|School:||Southern Illinois University at Edwardsville|
|Department:||Mechanical and Industrial Engineering|
|School Location:||United States -- Illinois|
|Source:||MAI 55/03M(E), Masters Abstracts International|
|Subjects:||Mechanical engineering, Materials science|
|Keywords:||Gas turbine, Impingement jet cooling, Nusselt number, Reynolds number, Turbine blades|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be