Home Page for John Mahaffy

OK This is a very old picture, but it's nice to remember that I was young once.

I have retired from Penn State and am now a Consultant to the Nuclear Regulatory Commission

Courses Taught before 2009


My main research areas are : The largest amount of my time since 1997 has been spent developing the U.S. Nuclear Regulatory Commission’s TRAC/RELAP Advanced Computational Engine (TRACE).  This program performs computational simulations of transients in nuclear power plants or any other system involving two-phase flow and heat transfer.  Specific research tasks under this project include:
This software has been applied by the USNRC in licensing decisions on new nuclear reactor designs (AP1000, ESBWR), and on existing plants.

  I have also done some work for the Organization of Economic Cooperation and Development (OECD) Nuclear Energy Agency (NEA).  This work has focused on insuring reliable CFD analysis for Nuclear Reactor Safety (NRS) applications.  Activities include: