bellbird

Library that parses differential equations (PDEs) strings and automates the creation of scripts for PyEFVLib using the element-based finite volume method.

Installation

pip install bellbird

Usage

import sys,os
sys.path.append(os.path.join(os.path.dirname(__file__), os.pardir))
import bellbird

# Heat Transfer
model = bellbird.Model(
    name = "Heat Transfer",
    equationsStr = ["k * div( grad(T) ) + q = rho * cp * d/dt(T)"],
    variables   = ["T"],
    properties = {
        "Body":{
            "k" : 10000.0,
            "q" : 0.0,
            "rho" : 1.0,
            "cp" : 1.0,
        },
    },
    boundaryConditions = [
        bellbird.InitialCondition("T", 0.0),
        bellbird.BoundaryCondition("T", bellbird.Dirichlet, "West", 0.0),
        bellbird.BoundaryCondition("T", bellbird.Dirichlet, "East", 100.0),
        bellbird.BoundaryCondition("T", bellbird.Neumann, "South", 0.0),
        bellbird.BoundaryCondition("T", bellbird.Neumann, "North", 0.0),
    ],
    meshPath = "mesh.msh",
    timeStep = 0.05,
    tolerance = 1e-4,
    maxNumberOfIterations = 300,
    sparse = False,
)

model.run()