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Developed by W.C. Reynolds, improved in collaboration with J.L. Lumley, and featured in Lumley's introductory book on internal combustion engines, published in 1999 by the Cambridge University Press.
ESP calculates the thermodynamic performance of a homogeneous charge spark ignition engine using a zero-dimensional model (ordinary differential equations), with one in-cylinder zone during gas exchange, compression, and expansion and two zones during combustion. It uses a one-equation (ODE) turbulence model to track the large-scale turbulent kinetic energy and uses this turbulence velocity in heat transfer and combustion models. The manifold gasdynamic model uses ODEs based on the method of characteristics and models for the acoustic time delays.
ESP can be used to study various
valve and piston programs, various fuels and oxidixers, effects of turbulence,
impact of reduced heat heat transfer, manifold tuning, spark timing, and
other design options.
Last updated on 01.4.2001