Particle In Cell Consulting, LLC (PIC-C). Developers of plasma, rarefied gas, and contamination transport simulation codes.
Sampling cosine distribution
April 2nd, 2015

Modeling Diffuse Reflection (or How to Sample Cosine Distribution)

Molecules impacting surfaces reflect either diffusely or specularly, Since diffuse reflection is more common, it is important to model it correctly. In this article we discuss how to model diffuse reflection by sampling from Lambert's cosine law.
sputter
March 11th, 2015

Sputter Calculator (alpha version)

Online calculator and plotting program for normal and angular sputter yields using the models of Yamamura and Matsunami.
xy-interpolation
February 21st, 2015

XY Interpolation Program

Online interpolation program that takes arbitrarily spaced unsorted X-Y data, fits a spline to it, and generates equidistant points.
stretched-mesh
February 18th, 2015

Stretched Mesh

Tutorial on implementing mesh stretching in Particle In Cell codes. Equations for node positions and finite difference coefficients are derived.
eps_3
January 18th, 2015

Potential Solver for Composite Dielectrics

Form of Gauss' law for composite dielectrics is derived. The governing equations are demonstrated with a 1D program that solves electric potential across several pieces with a variable permittivity and mesh spacing.
paper_image
December 4th, 2014

Some recent papers

This post is bit of an advertisement, in that I wanted to share with you some recent papers that I was involved in. Recent here is to be taken with a bit of grain of salt, since some the papers noted below are from as far back as 2010.
ad_solver_150x150
June 8th, 2014

Advection Diffusion Crank Nicolson Solver

Online Advection Diffusion equation solver implemented with Javascript and HTML5, and based on Crank Nicolson Finite Volume Method.
2j
May 27th, 2014

Current Density Limit

Ion thrusters are space charge limited devices, with maximum current density given by the Child Langmuir law. This simulation code explores the impact of space charge saturation on the flow between two planar electrodes.
Turbofan Calculator
May 23rd, 2014, 2 comments

Turbofan Calculator

Interactive turbofan calculator based on the one-dimensional model in Hill and Peterson's Mechanics and Thermodynamics of Propulsion.
plotter
March 4th, 2014, 2 comments

2D Data Plotting

Demo of plotting 2D scalar mesh scalar values using HTML5 canvas and rainbow RGB colormap.