- Author
-
Cooper, L. Y.
- Title
- Overview of a Model for Predicting the Generation Rate and Distribution of Products of Combustion in Two-Layer Fire Environments.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
-
Session B-2,
- Book or Conf
- Combustion Institute/Eastern States Section. Chemical and Physical Processes in Combustion. Fall Technical Meeting, 1990. December 3-5, 1990,
Orlando, FL,
64/1-4 p.,
1990
- Keywords
-
combustion
|
pool fires
|
enclosures
|
combustion products
|
flow rate
|
mass flow
|
experiments
|
steady state
|
global equivalence ratio
- Identifiers
- Generalized Global Equivalence Ratio Model (GGERM)
- Abstract
- Consider a multi-room compartment fire and assume an upper-layer/lower-layer zone-type of description of the environment in each of the rooms. As indicated in Figure 1, for the purpose of describing the combustion process in a room with a fire, the combustion zone and plume, which may protrude into the lower layer, is taken as part of the upper-layer zone. This abstract provides a brief overview of the essential features of the Generalized Global Equivalence Ratio Model (GGERM), the details of which are presented at length in [1]. The objective of the GGERM is to estimate the instanteous net rate of change of mass of combustion products k in the upper layer, for any room containing a fire in an arbitrary multi-room fire scenario. As depicted in Figure 2, the model is made up of two components. These are the accumulator, which simulates the generally unsteady average environment of the upper layer, and the quasi-steady reactor, depicted in Figure 3, which simulates the actual combustion processes taking place there. The material flowing into and out of the extended upper layer generally includes combustion products, associated with a fuel of interest, and other inert flow components.