Home / Store / Journals / Electronic Articles / Nuclear Science and Engineering / Volume 172 / Number 2 / Pages 216-222
R. T. Evans, D. G. Cacuci
Nuclear Science and Engineering / Volume 172 / Number 2 / Pages 216-222
Format:electronic copy (download)
We have implemented the first-order adjoint sensitivity analysis procedure (ASAP) into the three-dimensional parallel radiation transport code system Denovo, a module of the SCALE software suite. In particular, we used a Krylov-based approach to compute the solution to the inhomogeneous adjoint systems occurring in the ASAP. Our implementation, as a component of Denovo's scalable framework, should allow the efficient computation of cross section and atomic number density sensitivity coefficients for critical systems in a massively parallel fashion. We have constructed a proof that the Krylov-based approach converges to a unique solution and compared its computational requirements with the standard algorithm used in the neutron transport community. In addition, we performed a verification of our ASAP implementation on the Godiva experimental benchmark. We found the new approach to be an order of magnitude faster than the standard algorithm in this benchmark.
Your cart is empty.
Home|Invoice Payment|Nuclear Links