Modeling Non-Continuum and Non-Local-Equilibrium Gas Flows Using New Hydrodynamic Approaches
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Modeling Non-Continuum and Non-Local-Equilibrium Gas Flows Using New Hydrodynamic Approaches
Wed, 12/06/2013 - 15:00 to 16:00
Location:
Speaker:
Dr Kokou Dadzie
Affiliation:
Heriot-Watt University
Synopsis:
Non-continuum gas flows are found in micro-devices and have various applications ranging from shale gas diffusion modeling to predicting compressibility effects in the high speed flow regimes. The standard Navier-Stokes-Fourier set of equations, which drives most engineering flow simulations, fails to account properly for local non-equilibrium effects on mass, momentum and heat transfer. The various extended hydrodynamic attempts to improve the capability of the standard model frequently fail to meet basic thermo-mechanical principles such as Galilean invariance and the second law. During this seminar, I will discuss these problems and present a new route to modeling these effects. Sound wave propagation, shock wave structures, and mass flow rates in micro channels are among benchmark data to be presented.
Biography:
Kokou Dadzie completed his PhD in 2005 at Aix-Marseille University (France) in mechanical engineering. This follows a Masters in Mathematics from Togo and an MSc in Fluid Mechanics from Pierre & Marie-Curie University in Paris. Between 2006 and 2011 he was a research fellow at the University of Strathclyde in Glasgow. He is currently a member of Heriot-Watt University energy research group, based in the Institute of Mechanical, Process and Energy Engineering (IMPEE). Prior to this, he was a Senior Lecturer in Aeronautical Engineering at Glyndwr University (Wrexham, UK).
The work presented at this seminar is the result of five years collaboration with H Brenner at MIT (Massachusetts, USA)