Investigation
of Engine In-Cylinder Convective Heat Transfer
Abstract:
This project is focused on investigating the unsteady
nature of the engine in-cylinder convective heat transfer and
developing new skin friction and heat transfer models based
on dimensionless and micro-scale analyses of unsteady boundary
layer governing equations
Background:
Heat transfer is one of the essential processes that affect engine
performances and design. It is highly unsteady because the in-cylinder
gas temperature and velocity change rapidly. The heat flux to
the combustion chamber surface varies from zero to as high as
10 MW/sqm and back to zero again in less than 10 msec. But the
unsteady nature of the engine heat transfer is not well investigated
so far. Most well known models are developed based on steady state
heat transfer theory and cannot satisfy today's accuracy requirement. |
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Researchers:
Pin Zeng
Dennis Assanis
Zoran Filipi
Sponsors:
Automotive Research Center (TACOM)
Orbital Research Inc. |
