Results are presented from an experiment on capillary rise of water in inclined small-bore (Φ = 1.92 mm) cylindrical tubes. A series of thick-walled tubes with different lengths and taken from the same glass rod was used, and the angle of inclination towards the vertical, α, was varied from 0° to 88°. Results indicate that the capillary rise progressively reduces for increasing α, contrary to Jurin’s law predictions. It is observed further that the meniscus seems not to change in shape while varying the tube orientation. Possible consequences of the above observations on the statics of capillary tubes are commented. In the frame of the discussion, an alternative and more general approach for the derivation of the Jurin’s law is proposed.

A note on capillary rise in tubes / Barozzi, Giovanni Sebastiano; Angeli, Diego. - In: ENERGY PROCEDIA. - ISSN 1876-6102. - ELETTRONICO. - 45:(2014), pp. 548-557. (Intervento presentato al convegno 68th Conference of the Italian Thermal Machines Engineering Association, ATI 2013 tenutosi a Bologna, ita nel 2013) [10.1016/j.egypro.2014.01.059].

A note on capillary rise in tubes

BAROZZI, Giovanni Sebastiano;ANGELI, Diego
2014

Abstract

Results are presented from an experiment on capillary rise of water in inclined small-bore (Φ = 1.92 mm) cylindrical tubes. A series of thick-walled tubes with different lengths and taken from the same glass rod was used, and the angle of inclination towards the vertical, α, was varied from 0° to 88°. Results indicate that the capillary rise progressively reduces for increasing α, contrary to Jurin’s law predictions. It is observed further that the meniscus seems not to change in shape while varying the tube orientation. Possible consequences of the above observations on the statics of capillary tubes are commented. In the frame of the discussion, an alternative and more general approach for the derivation of the Jurin’s law is proposed.
2014
68th Conference of the Italian Thermal Machines Engineering Association, ATI 2013
Bologna, ita
2013
45
548
557
Barozzi, Giovanni Sebastiano; Angeli, Diego
A note on capillary rise in tubes / Barozzi, Giovanni Sebastiano; Angeli, Diego. - In: ENERGY PROCEDIA. - ISSN 1876-6102. - ELETTRONICO. - 45:(2014), pp. 548-557. (Intervento presentato al convegno 68th Conference of the Italian Thermal Machines Engineering Association, ATI 2013 tenutosi a Bologna, ita nel 2013) [10.1016/j.egypro.2014.01.059].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/997716
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