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VatsalSy/README.md

Vatsal Sanjay

Soft Matter Physicist | Computational Fluid Dynamics | Assistant Professor

CoMPhy Lab



Google Scholar ResearchGate ORCID LinkedIn X (Twitter) BlueSky Email Website

👋 About Me

I am a soft matter physicist at Durham University, where I lead the Computational Multiphase Physics (CoMPhy) Lab.

Our research focuses on non-Newtonian free-surface flows and soft matter singularities—fluid phenomena (like drops, bubbles, jets, and sheets) where interfaces undergo rapid, dramatic changes. Using high-fidelity simulations, theoretical modeling, and collaborative experiments, we investigate events such as:

  • 💧 Droplet impacts and coalescence
  • 🫧 Bubble bursting dynamics
  • 🌊 Jet formation and breakup
  • 📄 Liquid sheet fragmentation

We use complex (non-Newtonian) fluids as model systems to explore how microstructural stresses influence continuum-scale dynamics, connecting fundamental insights to real-world applications across industry and nature.

🔬 Research Interests

Multiphase Flows Non-Newtonian Fluids Soft Matter Computational Physics Fluid Dynamics

💻 Technical Skills

Languages & Tools

C Python Fortran LaTeX Basilisk Git

Specializations

CFD Direct Numerical Simulations High Performance Computing Scientific Visualization

🚀 Featured Projects

Stock Basilisk MPI kernel scaling on MareNostrum5 GPP (EuroHPC Benchmark Access EHPC-BEN-2026B08-034) • Python

Open-source computational tools for multiphase flow simulations and analysis.

🤝 Let's Collaborate!

We are committed to open science and welcome interdisciplinary collaborations. If you're interested in:

  • 🔬 Collaborative research projects
  • 👨‍🎓 PhD/Postdoc opportunities
  • 💡 Discussing fluid physics
  • 🛠️ Using our computational tools

Contact me - Nothing is more exhilarating than a healthy scientific discussion!


⚡ Recent Activity

  1. 🚀 Published release v0.4.0
  2. 🗣 Commented on #12 in comphy-lab/Bursting-Bubble
  3. 💪 Opened PR #12 in comphy-lab/Bursting-Bubble
  4. ℹ️ Assigned PR #2 in comphy-lab/active-drops-with-memory
  5. 💪 Opened PR #2 in comphy-lab/active-drops-with-memory

📊 GitHub Stats

Unique authored commits on repository default branches (last successful crawl on 12 September 2026 at 08:10 UTC): 15487

I'm an Early 🐤

🌞 Morning                4016 commits        ██████░░░░░░░░░░░░░░░░░░░   25.93 % 
🌆 Daytime                4872 commits        ████████░░░░░░░░░░░░░░░░░   31.46 % 
🌃 Evening                4951 commits        ████████░░░░░░░░░░░░░░░░░   31.97 % 
🌙 Night                  1648 commits        ███░░░░░░░░░░░░░░░░░░░░░░   10.64 % 

📅 I'm Most Productive on Saturday

Monday                   2277 commits        ████░░░░░░░░░░░░░░░░░░░░░   14.70 % 
Tuesday                  2414 commits        ████░░░░░░░░░░░░░░░░░░░░░   15.59 % 
Wednesday                2032 commits        ███░░░░░░░░░░░░░░░░░░░░░░   13.12 % 
Thursday                 1984 commits        ███░░░░░░░░░░░░░░░░░░░░░░   12.81 % 
Friday                   1951 commits        ███░░░░░░░░░░░░░░░░░░░░░░   12.60 % 
Saturday                 2482 commits        ████░░░░░░░░░░░░░░░░░░░░░   16.03 % 
Sunday                   2347 commits        ████░░░░░░░░░░░░░░░░░░░░░   15.15 % 

GitHub's contribution calendar counts events, not commits: public/default-branch commits, private or restricted activity, issues, pull requests, reviews, and repository creation. The custom total above counts globally deduplicated, primary-authored Git objects reachable from default branches visible to the action token at its last successful crawl; inaccessible repositories, topic-branch-only commits, unlinked authors, and rewritten history are excluded.

💻 Coding Activity

This Week I Spent My Time On

💬 Programming Languages
Markdown                 23 hrs 7 mins       ███████████░░░░░░░░░░░░░░   43.92 % 
Python                   9 hrs 11 mins       ████░░░░░░░░░░░░░░░░░░░░░   17.44 % 
JavaScript               4 hrs 22 mins       ██░░░░░░░░░░░░░░░░░░░░░░░   08.33 % 
JSON                     3 hrs 48 mins       ██░░░░░░░░░░░░░░░░░░░░░░░   07.22 % 
C                        3 hrs 25 mins       ██░░░░░░░░░░░░░░░░░░░░░░░   06.50 % 

🔥 Editors
Codex Vscode             35 hrs 28 mins      ████████████░░░░░░░░░░░░░   46.04 % 
Slack                    14 hrs 55 mins      █████░░░░░░░░░░░░░░░░░░░░   19.36 % 
Ghostty                  10 hrs              ███░░░░░░░░░░░░░░░░░░░░░░   12.99 % 
Notes                    5 hrs 31 mins       ██░░░░░░░░░░░░░░░░░░░░░░░   07.16 % 
Claude Code              4 hrs 18 mins       █░░░░░░░░░░░░░░░░░░░░░░░░   05.59 % 

🐱‍💻 Projects
personal-admin           11 hrs 7 mins       ████░░░░░░░░░░░░░░░░░░░░░   14.44 % 
cowork-os                10 hrs 49 mins      ████░░░░░░░░░░░░░░░░░░░░░   14.05 % 
alfred-grokbot           6 hrs 50 mins       ██░░░░░░░░░░░░░░░░░░░░░░░   08.88 % 
jarvis-skills            5 hrs 5 mins        ██░░░░░░░░░░░░░░░░░░░░░░░   06.60 % 
eurohpc-regular-access-205 hrs 1 min         ██░░░░░░░░░░░░░░░░░░░░░░░   06.53 % 

💻 Operating System
Mac                      77 hrs 3 mins       █████████████████████████   100.00 % 


📈 Contribution Graph

Vatsal's GitHub stats
🏆 GitHub Achievements

I rolled before Covid-19: Survivor of the Great TP Shortage I joined GitHub 5 years ago. I am a polite coder. I contributed to My Badges! I've starred 94 my own repositories. I merged a PR with failing checks I have participated in pull requests with 5 or more people I found the answer to the ultimate question of life, the universe, and everything! I closed an issue that was open for a year I joined GitHub 10 years ago. I have five or more public keys One of my commit sha starts with "a". One of my commit sha starts with "ab". One of my commit sha starts with "abc". I committed on the day when the crew of the USCSS Nostromo made their fateful landing and discovered the Xenomorph on LV-426! I did a little housekeeping! 🧹 I made cosmetic commit. I committed on the day Doctor Emmett Brown invented the flux capacitor! I made an epic commit with a message over 500 chars. My favorite word is "add". I did 2 sequential fixes. I did 3 sequential fixes. I did 4 sequential fixes. I did 6 sequential fixes. I committed on Friday the 13th, One… By One… When I delete code, I delete a lot. When I delete code, I delete a lot. May the 4th be with you! Happy March 14th! I committed on a Pi Day! Happy Programmers Day! I committed on a 256 Day of Year! I committed on Isaac Asimov's birthday / National Science Fiction Day! I committed on the Halloween! Boo! I committed on St. Patrick's Day! I collected 100 stars. I am a sleepy coder. I commit in the morning. I commit in the evening. I commit at midnight. I pushed a commit with "cafe" once.


😂 Random Dev Joke

Jokes Card

Pinned Loading

  1. Vatsal_CV Vatsal_CV Public

    This is the LaTeX source code of my CV

    TeX 11 2

  2. Bursting-Bubble-In-a-Viscoplastic-Medium Bursting-Bubble-In-a-Viscoplastic-Medium Public

    This repository contains the codes used for simulating the cases discussed in the manuscript: Bursting bubble in a viscoplastic medium

    C 8 3

  3. Impact-forces-of-water-drops-falling-on-superhydrophobic-surfaces Impact-forces-of-water-drops-falling-on-superhydrophobic-surfaces Public

    This repository contains the codes used for simulating the cases discussed in the manuscript: Impact forces of water drops on superhydrophobic surfaces. The results presented here are currently und…

    C 11 1

  4. Taylor-Culick-retractions Taylor-Culick-retractions Public

    This repository is under construction and will contain all the codes for reproducibility of the results in the paper: Taylor-Culick retraction at a liquid-air interface by Sanjay et al. (2021)

    C 4 1

  5. Vatsal-Thesis Vatsal-Thesis Public

    This is the LaTeX source code for my PhD thesis available here: https://doi.org/10.3990/1.9789036554077

    TeX 2

  6. comphy-lab/Drop-Impact comphy-lab/Drop-Impact Public

    Shell 1