Numerical simulation of jet impingement cooling on a smooth concave surface
Jet impingement has been widely used as a means of heat removal because of its advantages in effective removal of locally concentrated heat and easy adjustment to the location where cooling is needed. Typical applications are paper drying, cooling of electronic chips, annealing of glass and el...
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2009
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/7461/1/24p%20SUZAIRIN%20MD%20SERI.pdf http://eprints.uthm.edu.my/7461/2/SUZAIRIN%20MD%20SERI%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/7461/3/SUZAIRIN%20MD%20SERI%20WATERMARK.pdf |
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| Summary: | Jet impingement has been widely used as a means of heat removal because of
its advantages in effective removal of locally concentrated heat and easy adjustment
to the location where cooling is needed. Typical applications are paper drying,
cooling of electronic chips, annealing of glass and elimination of excessive thermal
load near the leading edge of gas turbine blade inner surface. More studies of jet
impingement cooling are reported on flat surfaces than on concave and convex
surfaces. For the flows on concave surface, the centripetal force due to the curvature
makes the flow unstable and produces Taylor-Gortler vortices. Such vortices are
known to enhance momentum and energy transfer and thereby heat transfer rate on
the surface. The present study involves a 2-dimensional simulation of homogeneous
air jet impinging normally onto a smooth concave surface from a single slot nozzle
by means of the Computational Fluid Dynamics software FLUENT. |
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