Abstract
Convective heat transfer from a heater with the height of 6.5 mm to a falling film of 25% mixture of ethyl alcohol in water is investigated experimentally. The Reynolds number varied in the experiments from 0.68 to 88.6. The heat flux density reached the value of 41 W/cm. As a result of the Marangoni effect, the modes of the steady formation of standing waves on the surface of the heater at Reynolds number varying from 0.68 to 9 were determined. The values of the heat transfer coefficient, from the heater to the liquid film obtained for two different regions of the heat flux density upon formation of large-scale structures. The results were generalized by empirical relations. The densities of the critical heat fluxes corresponding to the breakdown of the highly subcooled falling liquid film at Reynolds number from 0.68 to 9 are obtained.
| Original language | English |
|---|---|
| Pages (from-to) | 96-102 |
| Number of pages | 7 |
| Journal | Heat Transfer Research |
| Volume | 30 |
| Issue number | 1 |
| Publication status | Published - 1999 |
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ASJC Scopus subject areas
- Fluid Flow and Transfer Processes
Cite this
Heat transfer from a small-size heater to a falling liquid film. / Kabov, O. A.; Dyatlov, A. V.; Marchuk, I. V.
In: Heat Transfer Research, Vol. 30, No. 1, 1999, p. 96-102.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Heat transfer from a small-size heater to a falling liquid film
AU - Kabov, O. A.
AU - Dyatlov, A. V.
AU - Marchuk, I. V.
PY - 1999
Y1 - 1999
N2 - Convective heat transfer from a heater with the height of 6.5 mm to a falling film of 25% mixture of ethyl alcohol in water is investigated experimentally. The Reynolds number varied in the experiments from 0.68 to 88.6. The heat flux density reached the value of 41 W/cm. As a result of the Marangoni effect, the modes of the steady formation of standing waves on the surface of the heater at Reynolds number varying from 0.68 to 9 were determined. The values of the heat transfer coefficient, from the heater to the liquid film obtained for two different regions of the heat flux density upon formation of large-scale structures. The results were generalized by empirical relations. The densities of the critical heat fluxes corresponding to the breakdown of the highly subcooled falling liquid film at Reynolds number from 0.68 to 9 are obtained.
AB - Convective heat transfer from a heater with the height of 6.5 mm to a falling film of 25% mixture of ethyl alcohol in water is investigated experimentally. The Reynolds number varied in the experiments from 0.68 to 88.6. The heat flux density reached the value of 41 W/cm. As a result of the Marangoni effect, the modes of the steady formation of standing waves on the surface of the heater at Reynolds number varying from 0.68 to 9 were determined. The values of the heat transfer coefficient, from the heater to the liquid film obtained for two different regions of the heat flux density upon formation of large-scale structures. The results were generalized by empirical relations. The densities of the critical heat fluxes corresponding to the breakdown of the highly subcooled falling liquid film at Reynolds number from 0.68 to 9 are obtained.
UR - http://www.scopus.com/inward/record.url?scp=0033292402&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033292402&partnerID=8YFLogxK
M3 - Article
VL - 30
SP - 96
EP - 102
JO - Heat Transfer Research
JF - Heat Transfer Research
SN - 1064-2285
IS - 1
ER -