TOWARDS SUBGRID SCALE MODELING OF SUPPRESSANT FLOW IN ENGINE NACELLE CLUTTER

Published

April 24, 2001

Author(s)

P E. DesJardin, J M. Nelson, L A. Gritzo, David R. Keyser, T A. Ghee, J R. Tucker, P J. Disimile

Abstract

The release and transport of a suppressant agent into an enclosed compartment is sensitive to local geometrical features or “clutter” that is difficult to resolve numerically without using an excessively large CFD grid. Such examples include wire bundles or hydraulic lines in engine compartments of either ground vehicles or aircraft. Capturing these features on a grid will result in extremely small time steps for explicit time-accurate numerical simulations of agent release and subsequent fire suppression. An alternative approach is to use a subgrid scale (SGS) model to represent the macroscopic effects of these small features using reasonably sized CFD grid cells.

Citation

Special Publication (NIST SP) - 984-4

Report Number

984-4

NIST Pub Series

Special Publication (NIST SP)

Pub Type

NIST Pubs

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Citation

DesJardin, P. , Nelson, J. , Gritzo, L. , Keyser, D. , Ghee, T. , Tucker, J. and Disimile, P. (2001), TOWARDS SUBGRID SCALE MODELING OF SUPPRESSANT FLOW IN ENGINE NACELLE CLUTTER, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=909441 (Accessed October 8, 2025)