Friday, July 27, 2007, 11am -12pm, MAE Conference Room, 4211 Engineering Gateway

Development of Advanced Fluid Diagnostic Techniques for Thermofluid Studies

Professor Hui Hu

Department of Aerospace Engineering

Iowa State University

Abstract

The talk will start with description of the recent progress made by the speaker in developing Molecular Tagging Velocimetry and Thermometry (MTV&T) technique (U.S. patent pending) for simultaneous measurements of velocity and temperature distributions in fluid flows. Unlike most commonly-used particle-based techniques such as PIV and LDV, MTV&T technique utilizes specially-designed phosphorescent molecules that can be turned into long-lived "glowing" traces for flow diagnostics when they are excited by photons of appropriate wavelength. The unique glamour of the MTV&T will be demonstrated from the application examples to study complex fluid flow and heat transfer phenomena such as the thermal effect on the wake instability behind a heated cylinder and transient behavior of electroosmotic flows in electrokinetically-driven microfluidics.

The second part of the talk will give a brief introduction about several ongoing research projects in the speaker's laboratory, which include quantum dot imaging for thermofluid diagnostics;  fluid mixing control/enhancement in electrically-driven microfluidic or "Lab-on-a-chip" devices; bio-inspired airfoil designs for Micro-Air-Vehicle applications, boundary layer transition, separation and aerodynamic hysteresis of low-Reynolds-number airfoils; and fluid-structure interaction around buildings in tornado-liked winds.

Biographical sketch

Prof. Hu’s CV

http://www.public.iastate.edu/~huhui/paper/resume.pdf