Mechanical Engineering ETDs

Publication Date

Fall 12-17-2022


During the past three years, miniature heat sinks have been integrated into the cooling loop of devices such as MW-class gyrotron resonators and high-power laser arrays. These applications involve high cooling rates in the range of 20-25 MW/m2. Liquid metals such as Na and NaK offer very high thermal conductivity in the range of 16-79 W/mK, while their dynamic viscosities are only slightly higher than water viscosity. They can also be used in applications with operating temperatures varying from 25 oC to as high as 800 oC due to their very high boiling points. Several research investigations have been conducted on liquid metals flow and heat transfer in different areas from the cooling of nuclear reactors to solar power systems. However, a few studies are available in the literature for heat transfer in miniature heat sinks cooled by liquid metals. More research work and investigations are still needed to study the details of flow and conjugate heat transfer within liquid metal-cooled miniature heat sinks. This work aims to fill this gap in the literature.


Miniature heat sink, Liquid metals, high working temperature, high heat dissipation, Nusselt number, Conjugate heat transfer, Liquid metals, low Peclet Number

Degree Name

Mechanical Engineering

Level of Degree


Department Name

Mechanical Engineering

First Committee Member (Chair)

Dr. Nima Fathi

Second Committee Member

Dr. Yu-Lin Shen

Third Committee Member

Dr. Patrick McDaniel

Fourth Committee Member

Dr. Jens Lorenz

Document Type





I have applied and requested for a two-year embargo on my dissertation

Available for download on Tuesday, December 17, 2024