Definition and Measurement of Turbulence Parameters in Reciprocating I.C. Engines

Format:

Conference/Event

Author/Creator:

Daneshyar, H., author.

Conference Name:

1986 SAE International Fall Fuels and Lubricants Meeting and Exhibition (1986-10-06 : Philadelphia, Pennsylvania, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1986

Summary:

A trend removal procedure, incorporating a distribution free trend test is employed to obtain cycle resolved turbulence data for specified crank angle intervals. Spectral analysis using Fourier transforms is then employed to investigate how the mean square value of the velocity fluctuations is distributed with respect to frequency. It is demonstrated that the spectral analysis can also be employed to estimate the contributions from cycle by cycle variations to various ensembled average turbulence parameters.Hot wire velocity data, obtained from a Ricardo E6 engine, and from an engine model which was specifically built to investigate the mixture motion, wa used to evaluate ensembled average velocity and its standard deviation, mean velocity, turbulence intensity and the power spectrum of the mean square value of the velocity fluctuations.It is found that:

Notes:

Vendor supplied data

Publisher Number:

861529

Access Restriction:

Restricted for use by site license