Measurement and Numerical Prediction of Homogeneous Turbulent Flow Over a Cylinder: A Baseline for Droplet-Laden Flow Studies

Published

January 1, 2002

Author(s)

Cary Presser, J F. Widmann, P E. DesJardin, L A. Gritzo

Abstract

The focus of this effort is to investigate the dispersal of liquid agents around solid obstacles, and obtain a better understanding of the physical processes of droplet transport in cluttered spaces. A combined experimental-numerical study is presented to examine the flow field dynamics of highly turbulent flow over obstacles, and spray transport. Comparison of numerical predictions to the PIV measurements shows good qualitative agreement in spatial distribution of the mean and RMS velocities with a 20 % overprediction in mean streamwise velocity and 15 % underprediction in RMS. A numerical sensitivity study using HFE-7100 agent reveals a strong dependency of droplet penetration on initial droplet size for the flow range and droplet sizes that are of interest in practical agent delivery systems.

Proceedings Title

AIAA 40th Aerospace Sciences Meeting and Exhibit

Conference Dates

January 14-17, 2002

Conference Location

Reno, NV

Conference Title

40th Aerospace Sciences Meeting and Exhibit

Pub Type

Conferences

Keywords

computational fluid dynamics, computational fluid dynamics, droplet transport, fire simulation code, fire suppression, grid-generated turbulence, particle imaging velocimetry

Citation

Presser, C. , Widmann, J. , DesJardin, P. and Gritzo, L. (2002), Measurement and Numerical Prediction of Homogeneous Turbulent Flow Over a Cylinder: A Baseline for Droplet-Laden Flow Studies, AIAA 40th Aerospace Sciences Meeting and Exhibit, Reno, NV (Accessed October 13, 2024)