Abstract
The temperature pulsations and wave characteristics in water film flow along a vertical plate with a heater are investigated. Using an infrared scanner, the temperature field on the film surface is measured for various heat flux densities on the heater. Experimental data on the variation of the temperature with time on a local segment of the liquid film surface during wave transmission are obtained. In the absence of a heat flux the data obtained are in good agreement with the results of other researchers for an isothermal liquid film. When the down-flowing liquid is heated, the thermocapillary forces lead to the formation of rivulets and a thin film between them. It is shown that in the inter-rivulet zone the relative wave amplitude increases due to the action of the thermocapillary forces.
| Original language | English |
|---|---|
| Pages (from-to) | 596-604 |
| Number of pages | 9 |
| Journal | Fluid Dynamics |
| Volume | 43 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 20 Oct 2008 |
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Keywords
- Film
- Rivulet formation
- Temperature pulsations
- Thermocapillarity
- Waves
ASJC Scopus subject areas
- Mechanical Engineering
- Physics and Astronomy(all)
- Fluid Flow and Transfer Processes
Cite this
Temperature pulsations and thermocapillary effects on the surface of a wavy heated liquid film. / Kabov, O. A.; Marchuk, I. V.; Saprikina, A. V.; Chinnov, E. A.
In: Fluid Dynamics, Vol. 43, No. 4, 20.10.2008, p. 596-604.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Temperature pulsations and thermocapillary effects on the surface of a wavy heated liquid film
AU - Kabov, O. A.
AU - Marchuk, I. V.
AU - Saprikina, A. V.
AU - Chinnov, E. A.
PY - 2008/10/20
Y1 - 2008/10/20
N2 - The temperature pulsations and wave characteristics in water film flow along a vertical plate with a heater are investigated. Using an infrared scanner, the temperature field on the film surface is measured for various heat flux densities on the heater. Experimental data on the variation of the temperature with time on a local segment of the liquid film surface during wave transmission are obtained. In the absence of a heat flux the data obtained are in good agreement with the results of other researchers for an isothermal liquid film. When the down-flowing liquid is heated, the thermocapillary forces lead to the formation of rivulets and a thin film between them. It is shown that in the inter-rivulet zone the relative wave amplitude increases due to the action of the thermocapillary forces.
AB - The temperature pulsations and wave characteristics in water film flow along a vertical plate with a heater are investigated. Using an infrared scanner, the temperature field on the film surface is measured for various heat flux densities on the heater. Experimental data on the variation of the temperature with time on a local segment of the liquid film surface during wave transmission are obtained. In the absence of a heat flux the data obtained are in good agreement with the results of other researchers for an isothermal liquid film. When the down-flowing liquid is heated, the thermocapillary forces lead to the formation of rivulets and a thin film between them. It is shown that in the inter-rivulet zone the relative wave amplitude increases due to the action of the thermocapillary forces.
KW - Film
KW - Rivulet formation
KW - Temperature pulsations
KW - Thermocapillarity
KW - Waves
UR - http://www.scopus.com/inward/record.url?scp=53849129554&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=53849129554&partnerID=8YFLogxK
U2 - 10.1134/S0015462808040121
DO - 10.1134/S0015462808040121
M3 - Article
AN - SCOPUS:53849129554
VL - 43
SP - 596
EP - 604
JO - Fluid Dynamics
JF - Fluid Dynamics
SN - 0015-4628
IS - 4
ER -