Staff Directory

Banda RamaRao’s professional experience encompasses groundwater flow and transport modeling in the environmental industry and teaching and guiding research in groundwater flow at the masters and doctorate levels at a university. His experience in the environmental industry has focused on the development of several codes for single-phase fluid flow, heat transfer, and contaminant transport in porous and fractured media in support of radioactive waste isolation programs. His expertise includes developing stochastic inverse modeling codes for groundwater flow, coupling adjoint sensitivity analysis, parameter optimization, and geostatistical analysis of heterogeneous aquifers using pilot point methodology. He participated with a team of international geostatistical experts to conduct a comparison of alternative stochastic inverse models under the auspices of a US national laboratory. He also extended these techniques to models of multi-phase flow (e.g., TOUGH2 done earlier, STOMP presently ongoing). Banda’s experience relates mainly to the development of models and their application to site characterization and performance assessment of nuclear waste repositories. The development of the models encompasses simulation of coupled groundwater flow and transport of contaminants (including radioactive nuclides), with heat transfer for use in performance assessment of a deep geologic disposal site. This code included conditional simulation of transmissivities, adjoint sensitivity capability and optimization methodologies for stochastic inverse modeling. Banda has also participated in performance assessment addressing the travel time uncertainties, modeling studies of unsaturated flow, heat transfer and uncertainty importance studies of the dose to the humans. He developed the codes for the uncertainty importance analyses (SATOOL) and his experience includes the application of MODFLOW (USGS Code for Groundwater Flow), SWIFT (Sandia National Laboratories Code for Waste Isolation), TOUGH2 (LBL Code for Multi-Phase Flow and Heat), and STOMP (a Pacific Northwest National Laboratories (PNNL) code for Multi-Phase Flow).