NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
MODELING THE BURNING OF COMPLICATED OBJECTS USING LAGRANGIAN PARTICLES
Published
Author(s)
Kevin B. McGrattan, Randall J. McDermott, William E. Mell, Glenn P. Forney, Jason E. Floyd, Simo A. Hostikka
Abstract
A methodology is described for representing complicated objects within a computational fluid dynamics model. These objects are typically collections of similar items that are too small to define on the numerical grid that is used to solve the governing flow equations. Examples include vegetation like leaves and grasses, electrical cables, office clutter, and wooden cribs used in fire experiments. The basic idea is to use Lagrangian particles that are not tied to the numerical grid as a means of representing the small items. The particles can take on simple shapes like spheres, cylinders or plates, and detailed material properties can be assigned to them. A basic outline of the method and some examples are presented.
McGrattan, K.
, McDermott, R.
, Mell, W.
, Forney, G.
, Floyd, J.
and Hostikka, S.
(2010),
MODELING THE BURNING OF COMPLICATED OBJECTS USING LAGRANGIAN PARTICLES, Proceedings of the 2010 Interflam Conference, Nottingham, -1, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=905798
(Accessed October 13, 2025)