| Titre : | Measuring the thermal conductivity of flowing liquid samples using the three omega method (2012) |
| Auteurs : | Jonggan Hong, Auteur ; Dongsik Kim, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Journal of heat transfer (Vol 134 N° 9, Septembre 2012) |
| Article en page(s) : | 07 p. |
| Note générale : | heat transfer |
| Langues : | Anglais |
| Index. décimale : | 536 (Chaleur. Thermodynamique) |
| Tags : | convection ; liquid ; thermal conductivity measurement ; wave ; three omega method |
| Résumé : | The thermal conductivity of a liquid is generally measured under conditions that suppress bulk flow in the sample. However, in situ measurement of the thermal conductivity of a flowing liquid would be useful in various scientific and engineering applications. This work demonstrates that a thermal wave technique, such as the three omega method, can effectively measure the thermal conductivity of flowing liquid if the frequency range is adjusted such that the thermal boundary layer is sufficiently thinner than the momentum boundary layer. A new dimensionless number was defined to assess the convection effects, and a criterion for thermal conductivity measurements was obtained for water flowing in a circular tube. |
| DEWEY : | 536 |
| ISSN : | 0022-1481 |
| En ligne : | http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JHTRAO000134000009094502000001&idtype=cvips&gifs=Yes&ref=no |
