Mostra i principali dati dell'item
Experimental analysis of heat transfer between a heated wire and a rarefied gas in an annular gap with high diameter ratio
dc.creator | Chalabi, H. | en |
dc.creator | Buchina, O. | en |
dc.creator | Saraceno, L. | en |
dc.creator | Lorenzini, M. | en |
dc.creator | Valougeorgis, D. | en |
dc.creator | Morini, G. L. | en |
dc.date.accessioned | 2015-11-23T10:24:25Z | |
dc.date.available | 2015-11-23T10:24:25Z | |
dc.date.issued | 2012 | |
dc.identifier | 10.1088/1742-6596/362/1/012028 | |
dc.identifier.issn | 17426588 | |
dc.identifier.uri | http://hdl.handle.net/11615/26548 | |
dc.description.abstract | In this paper a first experimental attempt is performed to measure heat conduction through rarefied air at rest contained between two concentric cylinders. The heat transfer between a heated platinum wire having a diameter (d) of 0.15 mm, disposed along the axis of a cylindrical shell in stainless steel having an inner diameter (D) of 100 mm, and a surrounded rarefied gas has been studied experimentally and numerically. The ratio between the outer and inner diameter of the annular region filled by the gas is large (D/d=667). In the annular region filled with air the pressure was varied by using a vacuum pump from atmospheric value down to 10-3 mbar. Temperature differences between the wire and the external stainless steel wall in the range 50-125 K were imposed and the heat power transferred from the wire to the surround was measured as a function of the gas pressure starting from air at atmospheric conditions down to 10-3 mbar. The experimental results obtained in these tests were compared with the numerical results obtained by using the linear and nonlinear Shakhov kinetic models. © Published under licence by IOP Publishing Ltd. | en |
dc.source.uri | http://www.scopus.com/inward/record.url?eid=2-s2.0-84872177759&partnerID=40&md5=0043bcbb606f0b846fc2e7f783e8cf20 | |
dc.subject | Annular gap | en |
dc.subject | Atmospheric conditions | en |
dc.subject | Concentric cylinders | en |
dc.subject | Cylindrical shell | en |
dc.subject | Diameter ratio | en |
dc.subject | Experimental analysis | en |
dc.subject | Gas pressures | en |
dc.subject | Heat power | en |
dc.subject | Inner diameters | en |
dc.subject | Kinetic models | en |
dc.subject | Numerical results | en |
dc.subject | Platinum wire | en |
dc.subject | Rarefied gas | en |
dc.subject | Stainless steel walls | en |
dc.subject | Temperature differences | en |
dc.subject | Cylinders (shapes) | en |
dc.subject | Gases | en |
dc.subject | Heat transfer | en |
dc.subject | Platinum | en |
dc.subject | Wire | en |
dc.title | Experimental analysis of heat transfer between a heated wire and a rarefied gas in an annular gap with high diameter ratio | en |
dc.type | journalArticle | en |
Files in questo item
Files | Dimensione | Formato | Mostra |
---|---|---|---|
Nessun files in questo item. |