Experimental results are summarized, concerned with the statics of liquid columns in capillary tubes under non-standard conditions. Three configurations are considered: 1. inclined capillary tubes; 2. capillary effect in the horizontal branch of an L-shaped tube; 3. capillary columns in a vertical tube. The effect of inclination on capillary rise (1.) had already been explored in [1] using water in glass-tubes, and it was found that the vertical rise progressively reduces for increasing the tube inclination. This behavior is now confirmed for n-Hexadecane (C16H34). For L-shaped capillaries (2.), the length of the horizontal branch of the tube occupied by the liquid is detected, as a function of the elevation of the branch itself over the feeding pool. The statics of suspended liquid columns (3.) is investigated for two configurations, namely: i. freely suspended columns, and, ii. edge-ending columns. In the latter case, the evaporation transient is also tracked. Even if the experimental basis is limited, the results are sufficient to highlight some of the peculiar features of the statics of capillary columns under the above conditions. In particular, it is shown that the contact angle hysteresis plays a fundamental role in all the cases considered.

Notes and experiments on the statics of capillary columns / Barozzi, Giovanni Sebastiano; Corticelli, Mauro Alessandro; Angeli, Diego; Salerno, Elisabetta. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 796:1(2017), pp. 1-12. (Intervento presentato al convegno 34th UIT Heat Transfer Conference 2016 tenutosi a Scientific and Technological Center of The University of Ferrara, ita nel 2016) [10.1088/1742-6596/796/1/012001].

Notes and experiments on the statics of capillary columns

BAROZZI, Giovanni Sebastiano;CORTICELLI, Mauro Alessandro;ANGELI, Diego;SALERNO, ELISABETTA
2017

Abstract

Experimental results are summarized, concerned with the statics of liquid columns in capillary tubes under non-standard conditions. Three configurations are considered: 1. inclined capillary tubes; 2. capillary effect in the horizontal branch of an L-shaped tube; 3. capillary columns in a vertical tube. The effect of inclination on capillary rise (1.) had already been explored in [1] using water in glass-tubes, and it was found that the vertical rise progressively reduces for increasing the tube inclination. This behavior is now confirmed for n-Hexadecane (C16H34). For L-shaped capillaries (2.), the length of the horizontal branch of the tube occupied by the liquid is detected, as a function of the elevation of the branch itself over the feeding pool. The statics of suspended liquid columns (3.) is investigated for two configurations, namely: i. freely suspended columns, and, ii. edge-ending columns. In the latter case, the evaporation transient is also tracked. Even if the experimental basis is limited, the results are sufficient to highlight some of the peculiar features of the statics of capillary columns under the above conditions. In particular, it is shown that the contact angle hysteresis plays a fundamental role in all the cases considered.
2017
34th UIT Heat Transfer Conference 2016
Scientific and Technological Center of The University of Ferrara, ita
2016
796
1
12
Barozzi, Giovanni Sebastiano; Corticelli, Mauro Alessandro; Angeli, Diego; Salerno, Elisabetta
Notes and experiments on the statics of capillary columns / Barozzi, Giovanni Sebastiano; Corticelli, Mauro Alessandro; Angeli, Diego; Salerno, Elisabetta. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 796:1(2017), pp. 1-12. (Intervento presentato al convegno 34th UIT Heat Transfer Conference 2016 tenutosi a Scientific and Technological Center of The University of Ferrara, ita nel 2016) [10.1088/1742-6596/796/1/012001].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1135515
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