Abstract
This study compares experimental measurements and numerical simulations of liquid droplets over heated (to a near surface temperature of 423 K) and unheated cylinders. The numerical model is based on an unsteady Reynolds-averaged Navier-Stokes (RANS) formulation using a stochastic separated flow (SSF) approach for the droplets that includes submodels for droplet dispersion, heat and mass transfer, and impact on a solid surface. The details of the droplet impact model are presented and the model is used to simulate water spray impingement on a cylinder. Computational results are compared with experimental measurements using phase Doppler interferometry (PDI). Overall, good agreement is observed between predictions and experimental measurements of droplet mean size and velocity downstream of the cylinder.
| Original language | English |
|---|---|
| Pages (from-to) | 132-157 |
| Number of pages | 26 |
| Journal | International Journal of Multiphase Flow |
| Volume | 32 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2006 Jan |
Bibliographical note
Funding Information:Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company for the United States Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000. The first author acknowledges that this research was conducted during his presence at Sandia National Laboratories. The second author acknowledges the support of National Science Foundation under Grant No. CTS-0348110. The third author wishes to acknowledge the partial support of this research by the Department of Defense Next Generation Fire Suppression Technology Program, funded by the DoD Strategic Environmental Research and Development Program. He also would like to acknowledge Dr. George Papadopoulos who took the pictures of the spray impinging on the cylinder.
ASJC Scopus subject areas
- Mechanical Engineering
- General Physics and Astronomy
- Fluid Flow and Transfer Processes