Work

Thermally driven flows between a Leidenfrost solid and a ratchet surface

Year: 2013

Type: article

Abstract: The significance of thermally driven flows for the propulsion of Leidenfrost solids on a ratchet surface is studied based on a numerical solution of the Boltzmann equation. The resulting flow patterns are dominated by vortices developing at the edges of the ratchet teeth. In a previous analysis it had been claimed that thermally driven flows could cause the propulsion of Leidenfrost objects. In contrast to that analysis, it is found that such flows make an insignificant contribution to the thrust of Leidenfrost solids on ratchet surfaces, which is dominated by the pressure-driven flow due to the sublimating solid.

Source: Physical Review E

DOI: 10.1103/physreve.87.063015

Authors: Steffen Hardt, Sudarshan Tiwari, Tobias Baier

Institutions: Technische Universität Darmstadt, University of Kaiserslautern

Language: English

Topic: Gas Dynamics and Kinetic Theory

Subfield: Applied Mathematics

Field: Mathematics

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W1995755760

FWCI: 5.991

Cites: 18

Cited by: 30

Related to: 10