Whirl

a framework for simulating viscous incompressible flows

The objective of this package is to allow easy setup and fast simulation of incompressible flows, particularly those past bodies in motion. The package provides tools for

• constructing grids and body shapes,

• using the operators on those grids,

• specifying the relevant parameters and setting their values,

• solving the problem, and finally,

• visualizing and analyzing the results.

The underlying grids are uniform and Cartesian, allowing the use of the lattice Green's function (LGF) for inverting the Poisson equation; the diffusion operators are solved with the integrating factor (Liska and Colonius ref). Many of the core aspects of the fluid-body interaction are based on the immersed boundary projection method, developed by Taira and Colonius (ref). The coupled fluid-body interactions are based on the work of Wang and Eldredge (ref).

Installation

This package requires Julia 0.6 and above. To install, simply run

julia> Pkg.clone("https://github.com/jdeldre/Whirl.jl.git","Whirl")

in the Julia REPL. Since this package is still under heavy development, you should run

julia> Pkg.test("Whirl") # might take some time

to make sure things are working as intended and

julia> Pkg.update()

to get the most recent version of the library and its dependencies.

The plots in this documentation are generated using Plots.jl. You might want to install that too to follow the examples.

Basic Usage

Do something here.