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First Thermal and Fluids Engineering Summer Conference

ISSN: 2379-1748
ISBN: 978-1-56700-430-4

EFFECT OF THERMOCAPILLARY STRESS ON SLIP LENGTH FOR POISEUILLE FLOW OVER PARALLEL RIDGES

DOI: 10.1615/TFESC1.mnf.012930
pages 1595-1600

Marc Hodes
Department of Mechanical Engineering, Tufts University, Medford, MA, 02155; Bell Laboratories, Murray Hill, USA

Georgios Karamanis
Department of Mechanical Engineering, Tufts University, Medford, MA, 02155

Lisa Steigerwalt Lam
Department of Mechanical Engineering, Tufts University, Medford, MA, 02155

Scott MacLachlan
Tufts University, Department of Mechanical Engineering; Department of Mathematics and Statistic, Memorial University of Newfoundland, St. John’s, NL, Canada, A1C 5S7


KEY WORDS: Apparent slip, structured surfaces, thermocapillary stress

Abstract

We analytically compute the apparent hydrodynamic slip length for Poiseuille flow over parallel ridges in the presence of thermocapillary stress at menisci in a parallel-plate channel. No-slip and constant heat flux boundary conditions are imposed at the solid-liquid interfaces between the ridge tips and liquid. Menisci are considered flat and adiabatic.

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