Hello, A yearly allocation for the LCRC cluster has been requested with the following updated information: Submitter/PI: Zihan Wang Project Name: dual-fuel-sprays Division: ES Project title: High-fidelity modeling of gasoline and diesel sprays in a Chrysler dual-fuel engine Associated funding: DOE - Office of Vehicle Technologies Other Systems: Chrysler Group LLC, Convergent Science Inc. Science: The primary goal of this project is to study dual-fuel spray characteristics using the commercial code CONVERGE. Spray patterns will be studied in a constant volume setup. It is critical to understand both gasoline and diesel injection and mixture formation, which is substantial to the understanding of ignition, combustion, emissions, etc. With the use of parallel processing and scalable CFD solvers, Large Eddy Simulation (LES), which directly resolves the large scales in the flow field, is able to provide more detailed local flow structures and “cycle-to-cycle” variations in both gasoline and diesel spray events. Project description: The project is divided into three major tasks to be performed in collaboration with Chrysler Group LLC.: Task 1: Traditional Reynolds-Averaged Navier-Stokes (RANS) method will be applied to study non-evaporating gasoline and diesel sprays. Previously studied grid-convergence criteria will be implemented. Simulation results such as spray penetration, projected spray density, and Transverse Integrated Mass (TIM) will be validated against experimental measurements. Task 2: Large Eddy Simulation (LES) method with a couple of available sub-grid models will be applied to study spray events under the same conditions as Task 1. Previously studied grid-convergence criteria specific to LES will be implemented. Results will be compared to both RANS results and experimental measurements. Task 3: Sensitivity analysis on important spray parameters and ambient conditions and injection pressures will be investigated. Influence of spray model constants will be studied. The specific methods used for the multi-phase, reacting flow simulations with moving boundaries will include: 1) Finite volume schemes 2) LES (dynamic structure) and RANS turbulence models used 3) Detailed chemical kinetic models for diesel fuels 4) CONVERGE software is being used - ~120 licenses available 5) Scales well up-to 64 processors 6) Detailed spray models used for different spray processes Industry partnership: The project is a work-for-others agreement between Argonne and Chrysler Group LLC. It is expected that the results of the industry project will not only advance the state-of-the-art in spray simulations but also significantly benefit Chrysler in terms of modifying their best practices for spray simulations. Argonne will be performing the simulations, post-processing results, and writing technical reports. Chrysler will provide the geometry to be modeled, give guidance on simulation results, and their internal needs. Project URL: Current FY Hours Used: undetermined amount New FY Requested allocation: 499999 Q1: 125000 Q2: 125000 Q3: 125000 Q4: 124999 Justification: Storage requirements: Thank You, The LCRC Accounts System