Author: Rahul JainPublisher:
ISBN:
Category : Smoke plumes
Languages : en
Pages : 434
Book Description
Modeling Transport and Dispersion of Smoke Plumes from Agricultural Field Burning in Eastern Washington and Northern Idaho
Author: Rahul JainPublisher:
ISBN:
Category : Smoke plumes
Languages : en
Pages : 434
Book Description
Modeling Transport and Dispersion of Smoke Plumes from Prescribed Agricultural Field Burning in the Spokane-Coeur D'Alene Region
Author: Tara Marie StrandPublisher:
ISBN:
Category : Atmospheric diffusion
Languages : en
Pages : 208
Book Description
Ratschlag betreffend den Verkauf eines Abschnitts der Fabrikstrasse
Author: Smoke Dispersion Model for Prescribed Burning
Author: James A. PharoPublisher:
ISBN:
Category : Prescribed burning
Languages : en
Pages : 8
Book Description
User Assessment of Smoke-dispersion Models for Wildland Biomass Burning
Author: Steve BreyfogleSmoke Plume Trajectory from in Situ Burning of Crude Oil in Alaska
Author: Characterization of Smoke Plume Emissions and Dynamics from Prescribed and Wildland Fires Using High-resolution Field Observations and a Coupled Fire-atmosphere Model
Author: Kara M. YedinakPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Smoke plumes associated with wildland fires are difficult to characterize due to the non-linear behavior of the variables involved. Plume chemistry is largely modeled using emission factors to represent the relative trace gas and aerosol species emitted. Plume dynamics are modeled based on assumptions of plume vertical distribution and atmospheric dispersion. In the studies presented here, near and in-source measurements of emissions from prescribed burns are used to characterize the variability of emission factors from low-intensity fires. Emissions factors were found to be in the same range as those from other, similar studies in the literature and it appears that the emission factors may be sensitive to small differences in surface conditions such as fuel moisture, surface wind speed, and the ratio of live to dead fuels. We also used two coupled fire atmosphere models, which utilize the Weather Research and Forecasting (WRF) model called WRF-Fire and WRF-Sfire, to investigate the role that atmospheric stability plays in influencing plume rise as well as developing a technique for assessing plume rise and the vertical distribution of pollutants in regional air quality models. Plume heights, as well as rate of growth of the fire, were found to be sensitive to atmospheric stability while fire rate of spread was not. The plume center-of-mass technique was demonstrated to work well but has slightly low estimates compared to observations.
Investigation Into the Ability of the BlueSky Smoke Modeling Framework in Simultaing [sic] Smoke Impacts from Wildfires
![Investigation Into the Ability of the BlueSky Smoke Modeling Framework in Simultaing [sic] Smoke Impacts from Wildfires PDF](https://books.google.com/books/content/images/frontcover/c-rZi28sxNAC?fife=w80-h100)
Author: Lesley Adele FusinaPublisher:
ISBN:
Category : Air
Languages : en
Pages : 254
Book Description
Agricultural Field Burning Plume Rise
Author: Masoud AzarbaijaniPublisher:
ISBN:
Category : Air
Languages : en
Pages : 160
Book Description
Many agricultural fields are burned in the Willamette Valley of Oregon during the summer for economic reasons. A major air pollution problem results from these burnings. The purpose of this study was to develop relations between the maximum plume height and some of the independent variables affecting this plume height, such as, burn rate, wind velocity and atmospheric stability. By applying the proper relations found in this study, one could predict the maximum height a field burning plume would reach. The higher the plume rise, the lower the concentration of the plume effluents at ground level. If a relationship between the maximum plume height and the ground level concentration is known, for an accepted limit of ground concentration, the issuance of permission for the burning of a certain field could be given knowing the environmental variables. Three equations for different environmental conditions were developed through dimensional analysis. Their constants of proportionalities were obtained experimentally.
Smoke Dispersion from Multiple Fire Plumes
Author: Howard R. BaumPublisher:
ISBN:
Category :
Languages : en
Pages : 14
Book Description
The effects of multiple fire plumes in a stably stratified atmosphere with a uniform wind are investigated. A parabolized approximation of the steady-state Navier-Stokes equations obtained by replacing the windward velocity component with the ambient wind speed is the basis of the model. Lagrangian particles are used to visualize the flow, account for atmospheric fluctuations, and determine the smoke concentration field. Multiple-plume interactions can push particulate up to altitudes exceeding that of an equivalent single plume. A parametric study based on separation and heat release rates is performed for two plumes. The most dramatic increases in plume rise and spread are found for in-line plumes, parallel to the wind direction. Multiple-plume interactions can yield nonuniformities in the smoke concentration field that differ substantially from that predicted by Gaussian models.