Hello, A new project on the LCRC cluster has been requested. Please forward the information on to the LCRC Allocation sub-committee. Applicant's name: Vijay Mahadevan Applicant's institution: ANL Applicant's division: MCS Project Name: NEMphyValidation Project title: Coupled multiphysics validation of research reactor experiments Associated funding: DOE-NE Other Systems: Science: The collaborative project between ANL (MCS, NE) and RPI university aims to better understand and validate the coupled reactor physics solvers being developed at Argonne under the SHARP project. SHARP utilizes PROTEUS (NE), Nek5000 (MCS) and MOAB (MCS) to drive the solver at scale. Project description: Over the past 5 years, a great deal of effort has been invested in developing and verifying the SHARP reactor physics toolkit at Argonne, funded by the NEAMS program. The high fidelity reactor modeling codes namely the neutron transport solver (PROTEUS) and CFD solver (Nek5000) have been proven to scale (both strong and weak) on BG/P, BG/Q, Fusion and Blues architectures. These codes are integrated through the MOAB unstructured mesh library that performs the solution projection between the dependent models. We want to model a detailed geometry description of the research reactor at RPI, generate discrete meshes for the codes, setup the problem configuration and run the coupled model in order to verify and validate the experimental results that are being accumulated at RPI. The meshes contain on average about 250K elements on the coarsest level and with angle/energy discretization in the neutronics solver, the total DoFs can exceed 10M. We also intend to do convergence studies with at least two more refined levels of physical scale resolution, which will exponentially increase the total cost - and hence need for more nodes/cores. Members from ANL/MCS (2), ANL/NE (2) and RPI (2) students who are working on the validation project will be using this allocation. Industry partnership: University partner: Dr. Peter Caracappa (RPI) Project URL: Requested allocation: 80000 Q1: 0 Q2: 0 Q3: 0 Q4: 80000 Justification: The involved codes in SHARP: PROTEUS, Nek5000 and MOAB have all demonstrated high efficiency individually on large-scale problems. We are trying to analyze the coupled model efficiency for validating real world experiments, which will involve both increase in resolution (weak scaling) and minimizing time to solution (strong scaling) studies. Storage requirements: The requester has used undetermined amount hours of their initial startup project. In addition to approving an initial amount, please specify a Category and Subcategory for this project. For a list of the current selection of approved categories, please see: https://wiki.lcrc.anl.gov/wiki/Processes/Categories Once the Allocation committee has approved the project, please go to the Project Management page to create it: https://accounts.lcrc.anl.gov/projects.php Thank You, The LCRC Accounts System