title: Laser Doppler anemometry measurements in an engine.
abstract: A simple and effective technique is reported which allows measurement of the flow field in the cylinder of a motored internal combustion engine with good temporal and spatial resolution. The experiment, a realfringe laser Doppler anemometer, uses photon counting digital autocorrelation for data capture. The experimental autocorrelation functions have been processed using curve-fitting to a Gaussian velocity profile and by direct Fourier transformation without prior assumption of the form. The ability of such a technique to tolerate poor SNRs makes it a likely choice for measurement in firing engines.
authors.forename: J B
authors.initials: JB
authors.lastname: Cole
authors.forename: M D
authors.initials: MD
authors.lastname: Swords