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Author : Richard C. Rothermel
Publisher : Unknown
Page : 52 pages
File Size : 41,8 Mb
Release : 1972
Category : Flame spread
ISBN : MINN:31951D02988179P
Author : Richard C. Rothermel
Publisher : Unknown
Page : 40 pages
File Size : 52,5 Mb
Release : 1972
Category : Flame spread
ISBN : OCLC:3978254
Author : Richard C. Rothermel
Publisher : Forgotten Books
Page : 60 pages
File Size : 46,6 Mb
Release : 2017-10-28
Category : Electronic
ISBN : 0266859488
Excerpt from A Mathematical Model for Predicting Fire Spread in Wildland Fuels The phenomena of flame spreading over an igniting propellant surface is viewed herein as one of continuous, diffusive, gas-phase ignition; thus, the flame spreading phenomena is linked inextricably to the ignition phenomena. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author : Richard C. Rothermel
Publisher : Unknown
Page : 72 pages
File Size : 52,7 Mb
Release : 1986
Category : Forest fires
ISBN : OSU:32435067327841
Describes a model for predicting moisture content of fine fuels for use with the BEHAVE fire behavior and fuel modeling system. The model is intended to meet the need for more accurate predictions of fine fuel moisture, particularly in northern conifer stands and on days following rain. The model is based on the Canadian Fine Fuel Moisture Code (FFMC), modified to account for solar heating of fuels and to predict diurnal trends in fine fuel moisture. The model may be initiated without extensive data on prior weather. When compared to the FFMC and the fire behavior officers' procedures, the new model gave consistently better predictions over the complete range of fuel conditions.
Author : Joe H. Scott
Publisher : Unknown
Page : 80 pages
File Size : 53,9 Mb
Release : 2005
Category : Fire management
ISBN : MINN:31951D03001418R
Author : Donald M. Fuquay
Publisher : Unknown
Page : 32 pages
File Size : 40,9 Mb
Release : 1979
Category : Forest fires
ISBN : MINN:31951D02889289K
Author : Patricia L. Andrews
Publisher : Unknown
Page : 134 pages
File Size : 55,9 Mb
Release : 1986
Category : Fire testing
ISBN : MINN:31951D03009815D
Describes BURN Subsystem, Part 1, the operational fire behavior prediction subsystem of the BEHAVE fire behavior prediction and fuel modeling system. The manual covers operation of the computer program, assumptions of the mathematical models used in the calculations, and application of the predictions.
Author : James Kerr Brown
Publisher : Unknown
Page : 32 pages
File Size : 48,7 Mb
Release : 1972
Category : Flame spread
ISBN : MINN:31951D029881812
Author : Robert E. Keane
Publisher : Springer
Page : 191 pages
File Size : 55,9 Mb
Release : 2014-11-04
Category : Science
ISBN : 9783319090153
A new era in wildland fuel sciences is now evolving in such a way that fire scientists and managers need a comprehensive understanding of fuels ecology and science to fully understand fire effects and behavior on diverse ecosystem and landscape characteristics. This is a reference book on wildland fuel science; a book that describes fuels and their application in land management. There has never been a comprehensive book on wildland fuels; most wildland fuel information was put into wildland fire science and management books as separate chapters and sections. This book is the first to highlight wildland fuels and treat them as a natural resource rather than a fire behavior input. Moreover, there has never been a comprehensive description of fuels and their ecology, measurement, and description under one reference; most wildland fuel information is scattered across diverse and unrelated venues from combustion science to fire ecology to carbon dynamics. The literature and data for wildland fuel science has never been synthesized into one reference; most studies were done for diverse and unique objectives. This book is the first to link the disparate fields of ecology, wildland fire, and carbon to describe fuel science. This just deals with the science and ecology of wildland fuels, not fuels management. However, since expensive fuel treatments are being planned in fire dominated landscapes across the world to minimize fire damage to people, property and ecosystems, it is incredibly important that people understand wildland fuels to develop more effective fuel management activities.
Author : Frank A. Albini
Publisher : Unknown
Page : 52 pages
File Size : 47,5 Mb
Release : 1980
Category : Forest fires
ISBN : MINN:31951D02889275V
Describes a theoretical model for calculating thermochemical properties of the gaseous fuel that burns in the free flame at the edge of a spreading fire in fine forest fuels. Predicted properties are the heat of combustion, stoichiometric air/fuel mass ratio, mass-averaged temperature, and mass fraction of unburned fuel in the gas mixture emitted from the flame-producing zone. These variables depend upon readily determined intrinsic properties of the fuel, the fuel moisture content, fuel particle surface/volume ratio, particle mass density, and fuel loading. Numerical examples are given for several fuel-types, exploring the sensitivity to moisture content, char fraction formed (an inherent property of the fuel that can be modified by fire retardants), and an energy-leakage fraction related to fuelbed opacity. All the equations are given in appendixes.
Author : Richard C. Rothermel
Publisher : Unknown
Page : 68 pages
File Size : 48,9 Mb
Release : 1986
Category : Forest fires
ISBN : MINN:31951D02988299F
Describes a model for predicting moisture content of fine fuels for use with the BEHAVE fire behavior and fuel modeling system. The model is intended to meet the need for more accurate predictions of fine fuel moisture, particularly in northern conifer stands and on days following rain. The model is based on the Canadian Fine Fuel Moisture Code (FFMC), modified to account for solar heating of fuels and to predict diurnal trends in fine fuel moisture. The model may be initiated without extensive data on prior weather. When compared to the FFMC and the fire behavior officers' procedures, the new model gave consistently better predictions over the complete range of fuel conditions.
Author : Mark A. Finney,Sara S. McAllister,Jason M. Forthofer,Torben P. Grumstrup
Publisher : CSIRO PUBLISHING
Page : 675 pages
File Size : 50,5 Mb
Release : 2021-11-01
Category : Nature
ISBN : 9781486309108
Wildland fires have an irreplaceable role in sustaining many of our forests, shrublands and grasslands. They can be used as controlled burns or occur as free-burning wildfires, and can sometimes be dangerous and destructive to fauna, human communities and natural resources. Through scientific understanding of their behaviour, we can develop the tools to reliably use and manage fires across landscapes in ways that are compatible with the constraints of modern society while benefiting the ecosystems. The science of wildland fire is incomplete, however. Even the simplest fire behaviours – how fast they spread, how long they burn and how large they get – arise from a dynamical system of physical processes interacting in unexplored ways with heterogeneous biological, ecological and meteorological factors across many scales of time and space. The physics of heat transfer, combustion and ignition, for example, operate in all fires at millimetre and millisecond scales but wildfires can become conflagrations that burn for months and exceed millions of hectares. Wildland Fire Behaviour: Dynamics, Principles and Processes examines what is known and unknown about wildfire behaviours. The authors introduce fire as a dynamical system along with traditional steady-state concepts. They then break down the system into its primary physical components, describe how they depend upon environmental factors, and explore system dynamics by constructing and exercising a nonlinear model. The limits of modelling and knowledge are discussed throughout but emphasised by review of large fire behaviours. Advancing knowledge of fire behaviours will require a multidisciplinary approach and rely on quality measurements from experimental research, as covered in the final chapters.
Author : Mark A. Finney
Publisher : Unknown
Page : 52 pages
File Size : 43,9 Mb
Release : 1998
Category : FARSITE (Computer file)
ISBN : MINN:31951D02996913R
A computer simulation model, FARSITE, includes existing fire behavior models for surface, crown, spotting, point-source fire acceleration, and fuel moisture. The model's components and assumptions are documented. Simulations were run for simple conditions that illustrate the effect of individual fire behavior models on two-dimensional fire growth.
Author : Anonim
Publisher : Unknown
Page : 352 pages
File Size : 44,6 Mb
Release : 1998
Category : Forests and forestry
ISBN : UCR:31210015775420
Author : Claudia M. Regan
Publisher : Unknown
Page : 546 pages
File Size : 55,8 Mb
Release : 1998
Category : Biotic communities
ISBN : STANFORD:36105113733864
Vegetation at the Glacier Lakes Ecosystem Experiment Site, a 600 ha research site at 3200 to 3500 m elevation in the Snowy Range of southeastern Wyoming, was categorized and described from an intensive sampling of species abundances. A total of 304 vascular plant taxa were identified through collection and herbarium documentation. Plots with tree species were separated from those without tree species for ordination and classification analyses. Detrended correspondence analysis was used to order plots along major axes of composition variation, which are inferred moisture and topographic gradients. Cluster analysis was used to categorize plots based on composition similarity. The resulting groups were named according to species dominants. We identified and described in detail 4 meadow, 4 thicket or scrub, 3 krummholz, and 2 forest plant associations.