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Ellipses in Flows

For circular (2D) or spherical (3D) objects, please refer to the other library.

License LastCommit CI

https://github.com/NaokiHori/EllipsesInFlows/blob/main/docs/source/snapshot.png

Overview

This library numerically solves the motion of elliptic bodies governed by the Newton-Euler equations suspended in viscous liquid by means of the finite-difference and the immersed-boundary methods.

Please refer to the documentation for details.

Features

  • MPI-parallelised
  • Eulerian-based (no Lagrangian points) IBM
  • Collision model between ellipses

Dependency

Docker

Quick start

  1. Create working directory

    mkdir /path/to/your/working/directory
cd    /path/to/your/working/directory

  2. Fetch source

    git clone https://github.com/NaokiHori/EllipsesInFlows
cd EllipsesInFlows

  3. Build

    docker build -t simplenavierstokessolver:latest .
docker run -it --rm --cpuset-cpus="0-1" -u runner -v ${PWD}:/home/runner simplenavierstokessolver:latest
make output
make all

  4. Run

    mpirun -n 2 ./a.out

Examples

Several examples can be found in the documentation.

  1. Migration of a circular object in a shear flow
  2. Segré-Silberberg effect
  3. Rotation of an ellipse in a shear flow
  4. Suspension in a plane Poiseuille flow