Dielectrophoresis involves the creation of forces on polarizable particles to induce movement in non-uniform electric fields (usually AC electric fields). Dielectrophoretic forces can be used to characterize, handle and/or manipulate microscale and nanoscale bioparticles. This can include sorting, trapping and separating cells, viruses, bacteria, DNA, and the like. Dielectrophoresis can be fully accounted for in FLOW-3D and can be activated along with all other fluid flow options available in the code, such as one-fluid or two-fluid flow, with or without sharp interfaces.