What is CFDPre?

CFDPre is an open-source collection of object-oriented software tools for calculating boundary layer mesh dimensions for Computational Fluid Dynamics simulations. Among other things, it can be used to:

• Calculate First Layer Thickness, Growth Ratio and Final Layer Thickess

Installation

In your command line, within Python environment:

    pip install cfdpre

• The Python module can also be installed using pip on Windows, macOS, and Linux.

Usage

from cfdpre import yhgrcalc
yhgrcalc('Air', 50, 10, 2.5, 125, 1, 8)

Output:

{'fluid': 'Air',
 'temperature [C]': 50,
 'pressure [bar]': 10,
 'massflow [kg/sec]': 2.5,
 'hydraulicdia [mm]': 125,
 'target yplus': 1,
 'number of layers': 8,
 'dynvisc [N-sec/m^2]': 1.9762497305390764e-05,
 'thermal conductivity [W/m-k]': 0.028357331300649127,
 'specific heat [cp] [J/kg-k]': 1019.3146170790077,
 'density [kg/m^3]': 10.792698589669245,
 'kinematic viscosity [m^2/s]': 1.8310987878701066e-06,
 'flow velocity [m/sec]': 18.875569021507275,
 'reynolds number': 1288541.1444310248,
 'prandtl number': 0.7103701741111368,
 'skin friction coefficient [cf]': 0.003583573389858024,
 'wall shear stress [tau_wall]': 6.889956204766108,
 'height of cell centroid from wall [yp] [m]': 2.2917570116263883e-06,
 'first layer height [yh] [m]': 4.583514023252777e-06,
 'Growth Ratio': 2.3120331242085856,
 'Final Layer Thickness [m]': 0.0016186648187374523}

Documentation

In progress - not yet made!

• Project Home Page: https://cfdpre.github.io/ [under construction]
• Users Group: https://groups.google.com/g/cfdpre
• Source code: https://github.com/phsheth/cfdpre
• PyPI Page: https://pypi.org/project/cfdpre/

Call for Contributors

The CFDPre project welcomes your expertise and enthusiasm! Better to discuss on the users group before starting to contribute!

Project Log

January 2025:

1. Created Library

Project RoadMap:

1. Documentation for existing functionality.
2. Include example data within library.