The Eckert number phenomenon: experimental investigations on the heat transfer from a moving wall in the case of a rotating cylinder
| aut.relation.endpage | 559 | |
| aut.relation.issue | 6-7 | |
| aut.relation.startpage | 551 | |
| aut.relation.volume | 40 | |
| aut.researcher | Gschwendtner, Michael | |
| dc.contributor.author | Gschwendtner, MA | |
| dc.date.accessioned | 2012-12-18T01:26:30Z | |
| dc.date.available | 2012-12-18T01:26:30Z | |
| dc.date.copyright | 2004 | |
| dc.date.issued | 2004 | |
| dc.description.abstract | The Eckert number phenomenon was investigated theoretically by Geropp in 1969 and describes a reversal in heat transfer from a moving wall at an Eckert number Ec ≈ 1. In this report the Eckert number phenomenon is confirmed experimentally for the first time. For that purpose the heat transfer from a heated, vertically rotating cylinder in a crossflow was investigated. In order to perform the experiments in a range where the predicted phenomenon occurs, extreme rotational speeds were necessary. A heating concept had to be developed which allowed an input of heating power independent of the speed and which therefore had to be contact-free. The results show, among other things, that the temperature difference between the wall and the surrounding fluid has a significant effect on the predicted reversal of heat transfer at the wall. Moreover, maximum heat transfer occurs at an Eckert number Ec ≈ 0.3, which is of great importance for the cooling of hot surfaces in a gas-flow. | |
| dc.identifier.citation | Heat and Mass Transfer/Waerme- und Stoffuebertragung, vol.40(6-7), pp.551 - 559 | |
| dc.identifier.doi | 10.1007/s00231-003-0437-9 | |
| dc.identifier.issn | 0947-7411 | |
| dc.identifier.uri | https://hdl.handle.net/10292/4936 | |
| dc.publisher | Springer-Verlag | |
| dc.rights | An author may self-archive an author-created version of his/her article on his/her own website and or in his/her institutional repository. He/she may also deposit this version on his/her funder’s or funder’s designated repository at the funder’s request or as a result of a legal obligation, provided it is not made publicly available until 12 months after official publication. He/ she may not use the publisher's PDF version, which is posted on www.springerlink.com, for the purpose of self-archiving or deposit. Furthermore, the author may only post his/her version provided acknowledgement is given to the original source of publication and a link is inserted to the published article on Springer's website. The link must be accompanied by the following text: "The final publication is available at www.springerlink.com”. (Please also see Publisher’s Version and Citation) | |
| dc.rights.accessrights | OpenAccess | |
| dc.subject | Eckert number | |
| dc.subject | Nusselt number | |
| dc.subject | Heat transfer | |
| dc.subject | Rotating cylinder | |
| dc.subject | Adiabatic wall temperature | |
| dc.subject | Boundary layer | |
| dc.subject | Dissipation | |
| dc.subject | Frictional heat | |
| dc.title | The Eckert number phenomenon: experimental investigations on the heat transfer from a moving wall in the case of a rotating cylinder | |
| dc.type | Journal Article | |
| pubs.elements-id | 123310 | |
| pubs.organisational-data | /AUT | |
| pubs.organisational-data | /AUT/Design & Creative Technologies | |
| pubs.organisational-data | /AUT/Design & Creative Technologies/School of Engineering |