This thesis presents the experiment study results on the local heat transfer coefficients for air jet impinging on a flat rectangle board. A transient thermochromatic liquid crystal technique is used to visualize and record isotherms on an impingement surface.
The parameter studied include Reynolds number¡]Re=108,142,170¡^,jet height from the rectangular board¡]H/D=0.086,0.172,0.259,0.345,0.431,0.52¡^, and size of outlet¡]B/D=1.45,1.86,2.41¡^. The correlation of average Nusselt number is curve-fitted with Re,H/D and B/D .
According to the present study,heat transfer is best when the Reynolds number is large,the jet height is small,and the outlet area is large .
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0814105-172334 |
| Date | 14 August 2005 |
| Creators | Liao, Cheng-hao |
| Contributors | none, none, none |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0814105-172334 |
| Rights | unrestricted, Copyright information available at source archive |
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