Abstract:This paper uses a 3-D fiber laser Doppler velocimeter (FLDV) to measure the turbulent flow field inside a pancake type combustion chamber of a four-stroke single cylinder transparent engine. Three components of the instantaneous flow velocity at the central point on a plane 10 mm below the cylinder head are obtained to characterize the flow field before combustion. The experiment employed a filtering method to resolve the high frequency turbulence and low frequency cyclic fluctuation from the instantaneous vel… Show more
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