Gavin Wiggins

Apps / Code / Presentations / Publications

I am a research scientist at the Oak Ridge National Laboratory near Knoxville, Tennessee. My current work is developing computational models to simulate the fast pyrolysis of biomass in fluidized reactors. This research is part of the Consortium for Computational Physics and Chemistry for the U.S. DOE Bioenergy Technologies Office. I am also involved in various battery simulation activities as part of the Consortium for Advanced Battery Simulation project. As an enthusiastic developer, I organize the Knoxville CocoaHeads and KnoxPy programming groups.

Get in touch:
Email / GitHub / Keybase / Twitter


WeathrClip provided current weather conditions, 5-day forecast, hourly forecast, and precipitation radar for the Mac and iPhone. I discontinued this app because the Weather Underground API is no longer available.

Un1ts was a comprehensive unit converter for the Mac written in Objective-C. I'm currently working on a new version of the app written in Swift.


BatterySim provides code and documentation for developing battery models.

CCPCode is a collection of reactor modeling code and experimental data for the Consortium for Computational Physics and Chemistry (CCPC) project.

Chemics is a Python package for chemical reactor engineering.

Swift Programming for macOS is an online book about developing native macOS apps in Swift.


In addition to the PDFs and links provided below, presentations are also available on my page.


If you do not have access to a publication, please contact me and I will be genuinely delighted to send you a copy of the manuscript.