# Computational Multiphase Physics <br> (CoMPhy)
Welcome to the CoMPhy Lab's documentation hub! We are based at the Physics of Fluids Department at the University of Twente, where we explore non-Newtonian free-surface flows and soft matter singularities.
## About Us
See: [About us](https://comphy-lab.org/about)
## Published Notes and Documentation
### Blog posts:
#### 2025
##### Double Network Hydroget:
2025-10-31 [[2025-Why-Double‑Network-Hydrogels-Dont-Shatter]]: Why double-network hydrogels combine stiffness and toughness without shattering - elastic screening mechanisms that prevent crack cascades by damping stress propagation between sacrificial bonds.
##### Scientist profiles & history:
2025-10-24 [[2025-Emmy-Noether-Symmetry-Conservation]]: Emmy Noether's revolutionary contributions to mathematics and physics - from overcoming gender barriers in academia to discovering the profound connection between symmetry and conservation laws that now underpins all of modern physics.
##### Laser-droplet interactions:
2025-10-06 [[2025-Curvature-Inversion-in-Laser‑Struck-Droplets]]: Understanding how laser-induced pressure impulses control droplet sheet curvature in EUV lithography - from raised-cosine impulses to forward-bending sheets in tin microdroplets.
##### Computational tools & visualization:
2025-10-01 [[2025-visual-pdes]]: Interactive browser-based PDE simulator - exploring pattern formation, reaction-diffusion systems, and mathematical visualization through GPU-accelerated simulations. A "Desmos for PDEs" that runs in your browser.
##### Elastoinertial turbulence:
2025-02-24 [[2025-Arrowheads-in-elastoinertial-turbulence]]: Critical review of arrowhead structures in elastoinertial turbulence, examining their existence in 3D flows and experimental observations.
##### Drop impact dynamics:
2025-02-22 [[2025-JFM-viscous-drop-impact]]: Comprehensive study of viscosity's role in drop impact forces, from raindrops to inkjet printing applications.
##### Capillary waves:
2025-01-11 [[2025-Features-of-capillary-waves-during-asymmetric-bubble-coalescence]]: Analysis of capillary wave dynamics during bubble coalescence, focusing on energy transfer and wave propagation mechanisms.
### Code Documentation
#### 2024
##### H-B formulation:
2024-12-31 [[2025-Herschel–Bulkley-formulation]]: Mathematical formulation of the Herschel-Bulkley model for non-Newtonian flows, with emphasis on yield stress fluids.
### Lecture Notes:
#### Basilisk101
[Basilisk101](Lecture-Notes/Basilisk101/0-README.md): Comprehensive course on computational fluid dynamics using the Basilisk C framework. Topics include:
- Conservation laws and numerical solutions of Navier-Stokes equations
- Transport equations and interface tracking methods
- Non-Newtonian flows and viscoelasticity
- Multi-phase flows and contact line dynamics
- Hands-on coding assignments with practical implementations
#### Introduction to Soft Matter
[Intro-Soft-Matter](Lecture-Notes/Intro-Soft-Matter/0-README.md): Graduate-level course exploring soft condensed matter physics. Course structure includes:
- Fundamental concepts: What makes materials "soft"?
- Viscosity and momentum diffusion from kinetic theory
- Soft matter instabilities and singularities
- Rheology and viscoelastic behavior
- Weekly lectures with self-assessed homework and student presentations
#### Individual Lecture Notes:
2025-01-21 [[Gauss-law-of-Electrostatics]]: Analysis of electric field flux through different surfaces using Gauss's law, with visual demonstrations.
### Talks:
#### 2025
##### Conference Presentations:
2025-06-30 [[2025-06-30_Conference-VPflow-abstract]]: VPflow conference abstract on taming singularities through yield-stress regularization in bubble-bursting, exploring how viscoplasticity suppresses Worthington jetting.
##### Seminar Presentations:
2025-02-21 [[Seminar-Durham-abstract]]: Durham University seminar exploring polymeric flows as a tunable testbed for unsteady, nonlinear continuum mechanics.
2025-01-19 [[Seminar-UIUC-abstract]]: UIUC fluid seminar investigating how polymers modify classical hydrodynamic singularities in free-surface flows.
## Connect With Us
- 🌐 Website: [comphy-lab.org](http://www.comphy-lab.org)
- 📧 Email: [
[email protected]](mailto:
[email protected])
- 🐦 Twitter: [@VatsalSanjay](https://twitter.com/VatsalSanjay)
- 💻 GitHub: [github.com/VatsalSy](https://github.com/VatsalSy)
## Contributing
We welcome contributions from researchers, students, and collaborators. Here's how you can contribute:
1. **Issues**: Found a problem or have a suggestion? Choose an option below:
- [🗣️ Request a new blog topic](https://github.com/comphy-lab/CoMPhy-Lab-Blogs/issues/new?template=blog_topic_request.md&labels=blog-request,enhancement)
- [📚 Request documentation](https://github.com/comphy-lab/CoMPhy-Lab-Blogs/issues/new?template=documentation_request.md&labels=documentation)
- [🔍 Report content correction](https://github.com/comphy-lab/CoMPhy-Lab-Blogs/issues/new?template=content_correction.md&labels=correction)
2. **Pull Requests**: Want to contribute directly?
- Fork the repository
- Make your changes (it can simply be correcting grammar or making a new post - simply write in plain text or markdown format and add it to the root folder).
- Submit a pull request with a clear description of your changes
Visit our [GitHub repository](https://github.com/comphy-lab/CoMPhy-Lab-Blogs) to get started.
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*Note: This documentation is maintained by the CoMPhy Lab team and is regularly updated with our latest research findings and computational methods.*
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