Department of Aerospace Engineering

AER E Departmental Seminar: Dr. Satoshi Someya, University of Tokyo; "On the Visualization of Heat Transfer and Fluid Flows"

 

Dr. Satoshi Someya is an associate professor of thermal/fluid engineering at the Department of Human and Engineered Environmental Studies, The University of Tokyo. 

Dr. Someya will be presenting a seminar in Room 2202 at 2:10 PM on November 16, 2007.  His abstract is listed below:

On the Visualization of Heat Transfer and Fluid Flows

1).     CO2 sequestration (Carbon Capture and Storage, CCS) is an important technology to mitigate global warming. Understanding CO2 dissolution behavior is highly desirable for the safety design of CO2 sequestration. Our recent efforts on the quantitative measurements of pH and CO2 concentration distributions at high pressure (up to 10MPa) and low temperature (<10 Celsius degrees) environments for CO2 sequestration applications will be presented in the talk.

2).     A novel technique developed by the speaker for achieving simultaneous measurements of temperature and velocity fields in fluid flows will be introduced.  Specially-designed temperature sensitive particles are used as the tracers for both flow velocity and temperature measurements. The temperature sensitive particles are incorporated with a phosphor - europium complex. The intensity and the lifetime of the phosphorescence emission from the phosphor depend on the temperature, due to the thermal quenching effect of the phosphor.  While the movements of the seeded particles can be used to derive flow velocity distribution, the phosphorescence emission for the temperature sensitive phosphor is used to map fluid temperature. The feasibility of the technique are demonstrated by conducting temperature measurements in the flows of silicone oil (10cSt).

3)  Using refractive index matched material, the flow velocity measurements in a channel with very complicated geometry will also be introduced in this talk.

Someya brief bio
Someya flyer

---