NE Seminar: “Experimental Thermal-hydraulics in Nuclear Engineering (Applying Fundamental Thermal-Fluid Phenomena to Complex Nuclear Applications)”

Date(s) - 10/05/2023
1:55 pm - 2:55 pm

Rhines Hall 125



Nuclear Engineering requires an understanding of fundamental thermal-fluid phenomena and the application of those phenomena to complex nuclear systems.

In conventional light water reactors and water-cooled small modular reactors, two-phase boiling heat transfer has been one of the main research targets for both efficiency and safety. In non-water-cooled reactors such as gas-cooled reactors, liquid-metal reactors, and molten-salt reactors, the importance of turbulent flow needs to be emphasized as their primary system operates in a single-phase condition.

For advanced reactors, since they are designed for long-term operation of up to 60 years, studying the interaction between the coolant and structural materials is becoming more important. This seminar will cover experimental research that Dr. Saya Lee has been working on to contribute to nuclear thermal hydraulics, especially, including fundamental turbulent flow, multiphase phenomena, and applications in various reactor designs.


Saya Lee, Ph.D.

Assistant Professor
Pennsylvania State University

Dr. Saya Lee is an Assistant Professor at Pennsylvania State University, with a research focus on nuclear reactor thermal-hydraulics. Dr. Lee earned his Ph.D. in Nuclear Engineering from Texas A&M University (TAMU). He has extensive experience in diverse nuclear thermal-fluid applications to maintain the safety and operability of the current LWR fleet and to support the design and development of advanced reactors including a SMR heat exchanger, a VHTR upper plenum, a SFR wire-wrapped fuel rod bundle, and a pebble bed HTGR. Also, he has expertise in the development and use of advanced measurement techniques such as Particle Image Velocimetry (PIV), Laser Induced Fluorescence (LIF), Laser Doppler Velocimetry (LDV), Ultrasound Velocimetry, Fiber-Optic Temperature Sensor, Infrared Image Thermometry, and electric circuit based sensing techniques. Recently, Dr. Lee has been actively working on heat-pipe-cooled microreactors.