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A Computationally Efficient, Physics-Based Model For Simulating Heat Loss During Compression And The Delay Period In Rcm Experiments, S. Goldsborough, Colin Banyon, Gaurav Mittal

Dr. Gaurav Mittal

A computationally efficient, physics-based model is developed to account for the heat loss that occurs during the compression process and delay period in rapid compression machine (RCM) experiments. The model is formulated using multiple zones (MZs) and accounts for conductive losses in the main reaction chamber as well as convective losses in the piston crevice and ringpack regions. Blowby past the piston ringpack is also considered. The loss terms can be incorporated into the widely-utilized ‘adiabatic core’ model in order to perform ‘volumetric expansion’ calculations during chemical kinetic simulations that correct for pressure and temperature reductions resulting from these energy …