Pittsburgh, PA · University of Pittsburgh美国匹兹堡 · 匹兹堡大学

Ziyue Yu

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Advised by Prof. Lei Fang, studying turbulence where inertia almost vanishes.

师从 方磊 教授, 研究惯性趋近于零时的湍流。

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About关于我

I am a Ph.D. candidate in Civil and Environmental Engineering at the University of Pittsburgh, working with Prof. Lei Fang. My research focuses on turbulence in the weak-inertia regime — flows where inertia is nearly gone, yet multiscale transport stubbornly persists.

我是匹兹堡大学土木与环境工程系的博士研究生,导师是 方磊 教授。 我的研究聚焦于弱惯性区间的湍流——在这类流动中,惯性几乎消失,多尺度输运却依然顽固地存在。

I study low-Reynolds-number turbulence, Lagrangian coherent structures (LCS), active-matter–flow interactions, and scale-to-scale energy transfer in quasi-two-dimensional flows, combining laboratory experiments (3D particle tracking velocimetry, electromagnetically forced flows) with custom spectral and Lagrangian diagnostics. A recurring theme in my work is that the geometry of a flow — how its stress and strain-rate tensors align — can carry as much physics as its energy, and that carefully controlling that geometry lets turbulence-like transport emerge in places it was never expected.

我研究低雷诺数湍流、拉格朗日拟序结构(LCS)、活性物质与流动的相互作用,以及准二维流动中尺度间的能量传递; 方法上把实验室实验(三维粒子追踪测速、电磁驱动流动)与自己开发的谱分析和拉格朗日诊断工具结合起来。 我工作中反复出现的一个主题是:流动的 几何结构——它的应力张量与应变率张量如何对齐—— 所承载的物理不亚于它的能量;而精细地调控这种几何结构,能让类湍流的输运在人们从未预期的地方出现。

I came to fluid mechanics from a mechanical and aerospace engineering background at the Southern University of Science and Technology, where I worked with Prof. Hongyan Yuan. That path — from solids and computation toward the physics of flows — shaped how I like to work: build the experiment, measure it carefully, and let the structure in the data tell the story rather than the other way around.

我从南方科技大学的机械与航空航天工程背景走进流体力学,本科期间跟随 袁鸿雁 教授做研究。 这条从固体力学与计算走向流动物理的路径,塑造了我喜欢的工作方式:亲手搭建实验、仔细测量, 让数据里的结构来讲述故事,而不是反过来。

Alongside research, I have taught as a teaching assistant at Pitt for Fluid Mechanics and for Engineering & Sustainable Development, which earned me the department's Teaching Assistant of the Year award. I find that explaining an idea clearly is part of understanding it in the first place.

在科研之外,我在匹兹堡大学担任过助教,教授流体力学以及工程与可持续发展课程,并因此获得了系里的 年度最佳助教 奖。我发现,把一个想法讲清楚,本身就是真正理解它的一部分。

Outside the lab, I enjoy photography — you'll find some of my photos around this site — and tinkering with hardware of all kinds.

实验室之外,我喜欢摄影——你会在这个网站的各处看到我拍的一些照片——也喜欢捣鼓各种硬件。

Ziyue Yu with advisor Prof. Lei Fang, holding the 2025 Teaching Assistant of the Year award
With my advisor, Prof. Lei Fang — 2025 CEE Teaching Assistant of the Year.与我的导师方磊教授合影——2025 年土木与环境工程系年度最佳助教。
  • PositionPh.D. Candidate, Civil & Environmental Engineering
  • UniversityUniversity of Pittsburgh
  • B.Eng.Mechanical & Aerospace Engineering, SUSTech (2020–2024)
  • LocationPittsburgh, PA, USA
  • Emailyuziyue20020619@outlook.com
  • 职位土木与环境工程博士研究生
  • 学校匹兹堡大学
  • 本科机械与航空航天工程,南方科技大学(2020–2024)
  • 所在地美国宾夕法尼亚州匹兹堡
  • 邮箱yuziyue20020619@outlook.com
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Programs & Publications研究与论文

Research programs, papers, and talks. Preprints and PDFs are linked where available.研究项目、论文与学术报告。有预印本或 PDF 的地方都附了链接。

Finalizing定稿中

Two-Way Coupling in Active Suspensions Suppresses Particle Accumulation and Induces Non-Monotonic Flow Stabilization活性悬浮液中的双向耦合抑制颗粒聚集并诱导非单调的流动稳定化

M. Wu, Z. Yu, and L. Fang · Manuscript being finalized · Physical Review Fluids (2026)

Across 85 experiments with live Artemia salina swimmers in an electromagnetically driven cellular flow, finite swimmer loading suppresses the LCS accumulation predicted by one-way coupling, and the swimmers' back-reaction can either disrupt or — a previously unreported effect — reinforce the flow's transport skeleton, yielding a non-monotonic stability phase diagram in swimmer number × forcing strength.在 85 组以活体丰年虾(Artemia salina)为游动者、电磁驱动的胞状流动实验中,有限的游动者负载抑制了单向耦合所预测的 LCS 聚集;游动者的反作用既可能破坏、也可能——一种此前未见报道的效应——强化流动的输运骨架,从而在“游动者数量 × 驱动强度”平面上给出一个非单调的稳定性相图。

In Progress进行中

How Many Steps Does It Take to Kill the Tornado需要多少步才能“杀死”龙卷

Z. Yu and L. Fang · Research in progress (2025)

An energy-efficient strategy for destabilizing tornado-like vortices with small directional perturbations that trigger forward spectral energy flux and progressively collapse the vortex core.一种高能效的策略:用微小的方向扰动触发正向的谱能量通量,逐步瓦解类龙卷涡的涡核,从而使其失稳。

Talk会议报告

Low Reynolds Number Turbulence: Tensor Geometry Drives Turbulence in the Diminishing of Inertia低雷诺数湍流:张量几何在惯性消退中驱动湍流

Z. Yu and L. Fang · 78th Annual Meeting of the APS Division of Fluid Dynamics, Houston, TX (2025)

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Resume履历

A condensed version — the full CV is available as a PDF download.精简版——完整简历可 下载 PDF

Education教育背景

Ph.D., Civil & Environmental Engineering博士,土木与环境工程

Sep 2024 – Present2024 年 9 月 – 至今

University of Pittsburgh, Pittsburgh, PA

匹兹堡大学,美国宾州匹兹堡

Advisor: Prof. Lei Fang

导师:方磊 教授

B.Eng., Mechanical & Aerospace Engineering工学学士,机械与航空航天工程

Sep 2020 – Jun 20242020 年 9 月 – 2024 年 6 月

Southern University of Science and Technology (SUSTech), Shenzhen

南方科技大学,深圳

Advisor: Prof. Hongyan Yuan

导师:袁鸿雁 教授

Presentations学术报告

78th Annual Meeting of the APS Division of Fluid Dynamics美国物理学会流体力学分会第 78 届年会

Nov 20252025 年 11 月

“Low Reynolds Number Turbulence: Tensor Geometry Drives Turbulence in the Diminishing of Inertia,” Houston, TX.

《低雷诺数湍流:张量几何在惯性消退中驱动湍流》,美国德州休斯敦。

Teaching教学

Teaching Assistant, University of Pittsburgh助教,匹兹堡大学

2024 – 2025

CEE 1402 Fluid Mechanics · CEE 1610 Engineering and Sustainable Development

CEE 1402 流体力学 · CEE 1610 工程与可持续发展

Selected Awards主要荣誉

Teaching Assistant of the Year年度最佳助教

2025

Civil & Environmental Engineering, University of Pittsburgh

匹兹堡大学土木与环境工程系

SUSTech Scholarships & Honors南方科技大学奖学金与荣誉

2020 – 2022

Second-class Scholarship for Outstanding Students · Fastest Progress Scholarship (MAE) · Star of Literature and Art · Outstanding Student Advisor

优秀学生二等奖学金 · 最快进步奖学金(机械系) · 文艺之星 · 优秀学生助理班主任

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Photos相册

A little gallery of my life from 2020 to now — college, graduation, and everything after.记录我从 2020 年至今生活的小相册——大学、毕业,以及之后的一切。

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Contact联系

Always glad to talk about fluid mechanics, active matter, or photography — whether it's a potential collaboration, a question about my work, or just to say hello. Email is the fastest way to reach me.

无论是潜在的合作、关于我研究的问题,还是只想打个招呼,我都很乐意聊聊流体力学、活性物质或摄影。 发邮件是找到我最快的方式。

Say hello →打个招呼 →