Time-based analysis of phase Doppler data

J. R. Zurlo; Cary Presser; Atul Kumar Gupta

doi:10.1117/12.145690

24 May 1993 Time-based analysis of phase Doppler data

J. R. Zurlo, Cary Presser, Atul Kumar Gupta

Proceedings Volume 1862, Laser Applications in Combustion and Combustion Diagnostics; (1993) https://doi.org/10.1117/12.145690
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

A power spectral density estimation was performed to detect characteristic velocity fluctuations in the surrounding air flow field of a air-assisted spray flame. Measurements were carried out using randomly spaced in time velocity data obtained from a phase Doppler instrument. A fast algorithm enabled large numbers of data points to be analyzed in a relatively short time. An unbiased estimate was made of the power spectral density that considered the variable measurement times of individual realizations. The measured droplet arrival times from the phase Doppler particle sizer were used to determine the appropriateness of the Poisson distribution in describing droplet arrival times. The results indicate that the variance in droplet arrival statistics is larger than would be expected for a Poisson process. In addition, several positions in the spray have bimodal distributions which limits the utility of the Poisson process.

Citation Download Citation

J. R. Zurlo, Cary Presser, and Atul Kumar Gupta "Time-based analysis of phase Doppler data", Proc. SPIE 1862, Laser Applications in Combustion and Combustion Diagnostics, (24 May 1993); https://doi.org/10.1117/12.145690

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available