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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Kim, Tae Hoon Do, Kyu Hyung Oh, Dong-Wook Lee, Jungho Park, Jang-Min |
| Copyright Year | 2013 |
| Abstract | Conventional impinging jets enhance heat transfer but produce non-uniform radial distributions of the local and surface Nusselt numbers. In attempt to improve the radial uniformity of heat transfer, many researchers have introduced the concept of the swirling flow. The swirling flow can be generated by strips or swirling generators. The swirling generator is a circular rod with helical blades. The swirling generator is inserted inside a tube. This swirling generator with helical blades can generate swirling flow at the outlet of the nozzle. First of all, flow visualization of swirling jet as varying swirling angles, the length of the swirl generators, and distance between nozzle exit and a swirl generator is investigated. Based on the flow visualization, it is found that the distance between nozzle exit and a swirl generator affects the performance of swirling jet. For heat transfer analysis, an induction heating method is used to heat a steel plate up to a certain level which is almost the same as temperature of steel in iron- and steelmaking processes. For obtaining temperature distribution on impinging surface, several thermocouples are inserted below 1mm from the surface of the sample. Based on temperature distributions on the surface of a sample, 2-D temperature contours are obtained according to time. Based on the contours, effect of distance from nozzle exit to a swirling generator on uniform cooling is investigated. |
| Sponsorship | Heat Transfer Division |
| File Format | |
| ISBN | 9780791855485 |
| DOI | 10.1115/HT2013-17785 |
| Volume Number | Volume 2: Heat Transfer Enhancement for Practical Applications; Heat and Mass Transfer in Fire and Combustion; Heat Transfer in Multiphase Systems; Heat and Mass Transfer in Biotechnology |
| Conference Proceedings | ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology |
| Language | English |
| Publisher Date | 2013-07-14 |
| Publisher Place | Minneapolis, Minnesota, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Water Temperature distribution Strips Temperature Cooling Iron and steel making Blades Swirling flow Electromagnetic induction Thermocouples Generators Iron Steel Flow (dynamics) Heat Heating Flow visualization Nozzles Jets Heat transfer |
| Content Type | Text |
| Resource Type | Article |
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