All Categories (1-3 of 3)

1. Iterative Solution Method for an Implicit Orbit Averaged Particle-in-Cell Model

   18 Aug 2015 | | Contributor(s):: Benjamin Sturdevant

   Present kinetic simulations of turbulence in magnetized plasmas employ models from gyrokinetic theory, which is based on a number of ordering assumptions used to reduce the Vlasov-Maxwell system to eliminate high frequency phenomena. Recently, a second order accurate, implicit particle-in-cell...

2. Optimal Order Multigrid Preconditioners for Linear Systems Arising in the Semismooth Newton Method Solution Process of a Class of Control-Constrained Problems

   18 Aug 2015 | | Contributor(s):: Andrei Draganescu

   In this work we present a new multigrid preconditioner for the linear systems arising in the semismooth Newton method solution process of certain control-constrained, quadratic distributed optimal control problems. Using a piecewise constant discretization of the control space, each semismooth...

3. [Illinois] Accurate Solutions Of Extremely Large Integral-Equation Problems Involving Complex Metamaterial Structures

   29 Dec 2014 | | Contributor(s):: Levent Gurel