Hello, A yearly allocation for the LCRC cluster has been requested with the following updated information: Submitter/PI: Shashi Aithal Project Name: PETSc-Foam Division: CELS Project title: Investigation of robust, scalable solvers for OpenFoam Associated funding: Other Systems: Science: OpenFOAM (OF) is a multi-physics open-source solver code capable of modeling a wide-range of problems of interest to various divisions at ANL. One of the strengths of OpenFOAM is that new solvers and utilities can be created by its users. In this project, we intend to investigate fast, robust, scalable solvers for problems involving moving boundaries and combustion. The goal is to study various methodologies for load-balancing and solvers for large-scale simulations. Project description: OF is parallel, finite-volume CFD code which will be used for this project. Scaling studies on dsmcFoam and dieselFoam have shown good scalability. Small DSMC cases (1 million cells) have shown good scalability up to 192 cores. DieselFoam has shown good scalability up to 512 cores with about 500K cells. We will continue our with using the development branch of OpenFoam as with the previous year. Various algorithms for efficient domain decomposition and solution methods for combusting mixtures will continue to be investigated for optimal performance and robustness. New mesh-motion strategies, turbulence models and higher resolution studies are planned. 1) We will continue work on integrating reactingFoam solver currently capable of premixed/diffusion flow solver with engineFoam (moving mesh). Standard mechanisms such as gasoline (874 species, 3811 reactions) will be tested with the moving mesh problem for simplified engine geometries. 2) VOF modeling of the primary breakup of sprays in next generation injectors including effects of needle valve opening and closing 3) Investigation of improvements in OF solvers for reduction of numerical dissipation. Most of the effort this year will be on code development and testing of enhancing engineFoam. Industry partnership: None Project URL: Current FY Hours Used: undetermined amount New FY Requested allocation: 100000 Q1: 25000 Q2: 25000 Q3: 25000 Q4: 25000 Justification: Storage requirements: Thank You, The LCRC Accounts System