Hydrodynamic cavitation: from theory towards a new experimental approach

• Authors: Umberto Lucia , Gianpiero Gervino
• Languages of publication: EN

Abstracts

EN

Hydrodynamic cavitation is analysed by a global thermodynamics principle following an approach based on the maximum irreversible entropy variation that has already given promising results for open systems and has been successfully applied in specific engineering problems. In this paper we present a new phenomenological method to evaluate the conditions inducing cavitation. We think this method could be useful in the design of turbo-machineries and related technologies: it represents both an original physical approach to cavitation and an economical saving in planning because the theoretical analysis could allow engineers to reduce the experimental tests and the costs of the design process.

Keywords

EN

cavitation; hydrodymanics fluids; entropy; thermodynamics

Discipline

• 47.35.-i: Hydrodynamic waves(see also 47.65.-d Magnetohydrodynamics and electrohydrodynamics; 52.35.Bj Magnetohydrodynamic waves; 52.35.Dm Sound waves in Physics of plasmas and electric discharges)
• 05.70.-a: Thermodynamics(see also section 64 Equations of state, phase equilibria, and phase transitions, and section 65 Thermal properties of condensed matter; for chemical thermodynamics, see 82.60.-s; for thermodynamics of plasmas, see 52.25.Kn; for thermodynamic properties of quantum fluids, see 67.25.bd, and 67.30.ef; for thermodynamics of nanoparticles, see 82.60.Qr, and 65.80.-g; for thermodynamic processes in astrophysics, see 95.30.Tg; for thermodynamics in volcanology, see 91.40.Pc)

• Journal: Open Physics
• Year: 2009
• Volume: 7
• Issue: 3
• Pages: 638-644

Dates

published

1 - 9 - 2009

online

25 - 6 - 2009

Contributors

author

Umberto Lucia

• I.T.I.S. ‘A. Volta’, Spalto Marengo 42, 15100, Alessandria, Italy

author

Gianpiero Gervino

• Dipartimento di Fisica Sperimentale, University of Torino, Via P. Giuria 1, 10125, Torino, Italy

References

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Identifiers

DOI

10.2478/s11534-009-0092-y