IFCPAR AR (ENGLISH) for CD - CEFIPRA
IFCPAR AR (ENGLISH) for CD - CEFIPRA
IFCPAR AR (ENGLISH) for CD - CEFIPRA
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<strong>CEFIPRA</strong><br />
Centre Franco-Indien pour la Promotion de la Recherche Avancée<br />
Duration: Three years (December, 2010 to November, 2013)<br />
Objectives<br />
Taylor bubble flows have been extensively studied in the past.<br />
Most of these studies are under (i) adiabatic conditions, (ii) not<br />
in the mini/micro geometries (iii) under steady flow conditions.<br />
Thus, the fundamental understanding of such flows is highly<br />
lacking in mini/micro channel geometries, under phasechange<br />
processes and oscillating flow conditions. All these<br />
conditions are vital <strong>for</strong> emerging applications of mini/micro<br />
phase-change thermal-fluid systems. Such systems routinely<br />
have oscillations, either intentionally generated or occurring<br />
due to flow instabilities. The project aims to understand<br />
thermo-hydrodynamic response of oscillating Taylor flows<br />
under a<strong>for</strong>ementioned boundary conditions and its<br />
subsequent effect on thermo-fluidic transport coefficients.<br />
Particle Image Velocimetry (PIV), Infra Red Thermography (IRT)<br />
and High Speed Videography (HSV) were employed to achieve<br />
this aim. The results have direct implications on design and<br />
understanding of many advanced and upcoming mini/micro<br />
systems such as pulsating heat pipes, compact phase-change<br />
electronics cooling modules, micro-fluidic devices and microbiochemical<br />
reactors and mass transfer systems.<br />
Accomplishments<br />
i) Infra-red thermography of single-phase developing<br />
laminar flows<br />
ii) Heat transfer enhancement due to air-water Taylor bubble<br />
flows<br />
iii) Measurement of dynamic contact angle inside square<br />
capillary tubes<br />
iv) Realisation of an experimental bench <strong>for</strong> visualisation of<br />
one vapour plug and one liquid slug and first experiments<br />
Research papers published: One<br />
Project 4408-1<br />
THERMO HYDRODYNAMICS OF PHASE CHANGE INDUCED<br />
OSCILLATING TAYLOR BUBBLE FLOWS<br />
Research Activities 2010-11<br />
Material Sciences<br />
Dr. Sameer Khandekar<br />
Department of Mechanical Engineering<br />
Indian Institute of Technology<br />
Kanpur<br />
Prof. Jocelyn Bonjour<br />
Centre de Thermique de Lyon<br />
(CETHIL)<br />
INSA-Lyon<br />
Villeurbanne<br />
Experimental bench of the single-bubble PHP at INSA-Lyon (V)<br />
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