Jinyuan Liu

Contacts: wallturb@gmail.com, jinyuanliu@ucsd.edu
CV, Google Scholar, ORCID

Jinyuan is currently a Ph.D. student in Mechanical and Aerospace Engineering at the University of California San Diego. He works with Sutanu Sarkar in the CFD Lab. His current research focus is turbulence and vortex dynamics in rotating, stratified wakes. He has a broad interest in wall-bounded and free-shear turbulence, as well as geophysical flows.

Jinyuan received his Bachelor’s Degree in engineering thermophysics from Tsinghua University, China, in 2020. After working as a post-baccalaureate researcher at the same institute for six months, he joined the CFD Lab in Jan. 2021. He had also been working as a pre-doctoral researcher on turbulent boundary layers at the University of Waterloo, and on turbulent channels at Universidad Politecnica de Madrid.

Jinyuan is also an aviation photographer and a member of the photography team of Airways Magazine. (Jetphotos gallery, Airways gallery) His shutter count exceeds 100,000. He swims and plays the trumpet, when he is not pretending to be a fluid dynamicist. He has been playing Go (Wei-Qi) since elementary school, and was ranked amateur 5-dan by the Chinese Go Association.

His name in Chinese characters is 刘晋源.

Education

Ph. D. student in Fluid Mechanics, Jan. 2021 - present
Department of Mechanical and Aerospace Engineering, UC San Diego, advised by Sutanu Sarkar

B. S. E. in Thermophysics (with distinction), Aug. 2016 - June 2020
Department of Engineering Mechanics, Tsinghua University

Visiting Research Student, Sep. 2019 - Mar. 2020
School of Aeronautics, Universidad Politecnica de Madrid, advised by Javier Jimenez

Publications, pre-prints, and thesis

Chunmei Xie, Jinyuan Liu, Jing-Wei Jiang, and Wei-Xi Huang. Numerical study on wetted and cavitating tip-vortical flows around an elliptical hydrofoil: Interplay of cavitation, vortices, and turbulence. Physics of Fluids, 33(9):093316, 2021 (link) (pdf)
Jinyuan Liu, “Large- and very-large-scale structures in turbulent channels,” Undergraduate thesis (Tsinghua University, 2020), in Chinese. (pdf)
Jinyuan Liu, Pranav Puthan, Sutanu Sarkar. Effect of rotation on vortex structures in stratified hill wakes. (in preparation)

Talks and conference presentations

Jinyuan Liu, Pranav Puthan, and Sutanu Sarkar. Structures of vortices in underwater hill wakes. The 15th SoCal Fluids Symposium, UCLA, Los Angeles, April 2022. (abstract)
Jinyuan Liu, Pranav Puthan, and Sutanu Sarkar. Spatiotemporal analysis of coherent structures in the wake of an underwater hill. The 75th Annual Meeting of American Physical Society Division of Fluid Dynamics, Indianapolis, November 2022. (abstract)
Jinyuan Liu, Pranav Puthan, and Sutanu Sarkar. Influence of rotation on the vortex dynamics in stratified flow past an underwater hill. The 16th SoCal Fluids Symposium, SDSU, San Diego, April 2023. (abstract)
Jinyuan Liu, Pranav Puthan, and Sutanu Sarkar. Coherent vortex structures in stratified rotating flow past a three-dimensional hill. The 76th Annual Meeting of American Physical Society Division of Fluid Dynamics, Washington DC, November 2023. (abstract)
Jinyuan Liu, Pranav Puthan, and Sutanu Sarkar. Stratified flow over steep isolated topography: submesoscale wake vortices, internal waves, and turbulence. Ocean Science Meeting, New Orleans, February 2024.

Notes

Hydrodynamic and geostrophic assumptions, CFD Lab Tech Notes. (pdf)
Aviation photography: at the intersection of science and arts, TU night Talk (in Chinese), TUNA at Tsinghua, May 2022. (link) (slides) (YouTube)
Coherent structures in Spark 12, Spark talk (commencement address), Tsinghua, May 2020. (slides)

Awards

Outstanding Undergraduate Dissertation (5%), Tsinghua University, 2020
Academic Distinction Award for Graduates (10%), Tsinghua University, 2020
Second Prize for Student Research Training, Tsinghua University, 2019
Scholarship for Scientific Innovation, Tsinghua University, 2018
Scholarship for Overall Excellence, Tsinghua University, 2018
Scholarship for Academic Distinction, Tsinghua University, 2017, 2018, 2019
First Prize, National Aerospace Knowledge Competition for College Students, 2018

Fellowships and Memberships

Fellowship, 5th Madrid Turbulence Summer School, Universidad Politecnica de Madrid, 2023
Fellowship, 12th Spark Innovative Talent Cultivation Program, Tsinghua University, 2018
Student Member, American Physical Society, Division of Fluid Dynamics (since 2019)
Member, American Go Association

Teaching Assistantship (at UCSD)

MAE290B Numerical Methods for PDEs (graduate course, instructor: Sutanu Sarkar), Winter 2022, 2023, 2024
MAE214A Intro to Turbulence and Mixing (graduate course, instructor: Sutanu Sarkar), Spring 2022, 2023

Services

Referee for: Physics of Fluids, Acta Mechanica Sinica
Chairperson, Council of the 12th Spark Innovative Talent Cultivation Program, Tsinghua University, 2018 - 2020
JUMP Peer Mentor for 8 undergrads, Jacob School of Engineering, UC San Diego, 2020, 2021
Peer Mentor for 15 freshmen, School of Aerospace, Tsinghua University, 2018, 2019

Friends’ links (incomplete)

Hedong (Ben) Hou is not working hard enough! Please drop him a message and remind him that the Millennium Problem of Navier-Stokes Equations is still unsolved!
Pwe is a cat. Click here to pat.
Xinyi is taking her voyage through turbulence and leaves no trace. But the ups and downs are already in the mind.

Shared links

Philosophy: good taste, work hard, interest, smart, do well in math, be a good physicist (bilibili video), novelty
Fundamentals of instruction: how memory works, delibarate practice

Fun pics

Miscellaneous