https://doi.org/10.1021/acsaem.5c02956
Author: Lingnan Lin
Kiv Selected for Nebula Fellowship
Congrats to Brandon Kiv for being selected for the Nebula Research Data Fellowship. He will be working together with Chase Yankowski, who was earlier selected as the Nebular Research Mentor, on developing software for streamlining the digitization and database building of heat transfer data from the literature.
New PhD Student Joined: Kagan Sears
We are excited to have Kagan Sears join us this Fall as a new PhD student. Kagan graduated from Purdue University with BS in Mechanical Engineering and then spent a summer at C.C. Wang Lab at NCYU Taiwan. He is co-advised by Dr. Lin and Dr. Agonafer, and will be focused on direct-to-chip cooling technologies for data centers. Welcome on board, Kagan!
Paper Published in Int. J. Heat Transf.
How is the heat transfer in two-phase flow related to single-phase flow? A new theory is proposed in our recent paper to answer this question.
The paper focuses on two-phase annular flow during condensation. We developed a simple, physics-based model that considers the thermal resistances for the boundary layers near the wall and the liquid-vapor interface. The model yields an analytical expression for the two-phase multiplier, suggesting that it scales linearly with the inverse of the liquid fraction. This is confirmed by experimental data. The scaling factor is linked to the dimensionless interface velocity (i.e., ratio of interface velocity to mean liquid velocity), which can be approximated as a universal constant. The model achieves prediction accuracy comparable to the existing empirical correlations, while offering the additional benefit of providing a physically grounded framework that can be further adapted and refined.
Congrats to Chase Yankowski, our first PhD student, on publishing his first (& Lin Lab’s first) journal paper. Look forward to more insights and discoveries coming out of this project.
Yankowski Awarded Clark Fellowship
Our grad student, Chase Yankowski, was awarded with the prestigious Clark Fellowship and named a Clark Doctoral Fellow. The Clark Doctoral Fellows Program supports high-performing engineering Ph.D. students at the A. James Clark School of Engineering. This fellowship recognizes the excellence and potential that Chase has demonstrated and will support his endeavors in research and pursuing Ph.D. Congratulations, Chase!
Lin Lab Attending TPTPR 2025
We attended the 7th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants (TPTPR), held in UMD. We presented a conference paper (see below). Dr. Lin chaired the session “E1: Low-GWP Refrigerant Behaviors”.
C. Yankowski, B. Mullin, L. Lin, A Simple Model for Heat Transfer in Annular Two-Phase Flow, Paper 1148, 7th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants, June 15-18, 2025, College Park, MD
Warmest Welcome to Summer Interns
This summer, we are delighted to have two interns join the lab – Zach Yashar and Joshua Ma. Zach is a rising junior from UIUC majoring in Mechanical Engineering with a minor in Economics. He is a Virginia local who graduated from Thomas Jefferson High School for Science and Technology. Joshua is a sophomore at Glenelg High School with a strong interest in pursuing a career in engineering.
It is fantastic to work with you, Zach and Joshua!
