Journal article

Flow generated by oscillatory uniform heating of a rarefied gas in a channel

Jason Nassios, Ying Wan Yap, John E Sader

Journal of Fluid Mechanics | CAMBRIDGE UNIV PRESS | Published : 2016

Abstract

Kinetic theory provides a rigorous foundation to explore the unsteady (oscillatory) flow of a dilute gas, which is often generated by nanomechanical devices. Recently, formal asymptotic analyses of unsteady (oscillatory) flows at small Knudsen numbers have been derived from the linearised Boltzmann-Bhatnagar-Gross-Krook (Boltzmann-BGK) equation, in both the low- and high-frequency limits (Nassios & Sader, J. Fluid Mech., vol. 708, 2012, pp. 197-249 and vol. 729, 2013, pp. 1-46; Takata & Hattori, J. Stat. Phys., vol. 147, 2012, pp. 1182-1215). These asymptotic theories predict that unsteadiness can couple strongly with heat transport to dramatically modify the overall gas flow. Here, we study..

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University of Melbourne Researchers