(EMSL18) Hanford Site-wide Flow and Transport Modeling
EMSL Project ID
1941
Abstract
As part if its role in the Hanford Groundwater-Vadoze Zone Integration Project, PNNL has the responsibility for maintaining a site-wide groundwater flow and transport model for use in Hanford Site applications. An essential component of this site-wide model, CFEST, is the development of a viable uncertainty approach based on the use of a transient inverse methodology based on Hanford historical operations and the large number of observations of heads and tritium concentrations collected during this period of time. With current simulation run times and the large number of individual simulations that would be required for each of these activities, performing this work using standard serial computing approaches on our current equipment is not considered feasible. We propose initially to exploit the parallelism available from the concurrent model evaluations needed for computing directional derivatives. This would bring the time scale of a CFEST calibration from over a year to under a month on a dedicated platform such as the ECS1. Further speedup will be achieved by replacing the computationally intensive parts of CFEST with parallel components based on the shared memory model. The SMP architecture of the ECS1 nodes is very well suited for this purpose. We expect to achieve speedups in the range of 64 to a 100 and thus to demonstrate the feasibility of automatic inverse calibration of the current CFEST model using a mixture of distributed and shared memory approach on the ESC1.
Project Details
Project type
Capability Research
Start Date
2000-02-29
End Date
2000-03-01
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members