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Project ID: 09-1-04-5

Year: 2009

Date Started: 07/30/2009

Date Completed: 02/08/2013

Title: Superfog Formation: Laboratory Experiments and Model Development

Project Proposal Abstract: Researchers from the University of California at Riverside and the USDA Forest Service (FS) are proposing a study to understand the processes that govern the formation of "superfog", which is associated with low intensity, smoldering fires. This study is designed to complement a study proposed by FS collaborators (Drs. Achtemeier and Goodrick), who will conduct field studies and evaluate models to predict nocturnal smoke movement and the associated potential for visibility hazards. Our proposed study will put the interpretation of the field studies conducted by the FS on a sound scientific footing. We will develop a detailed mechanistic model for the behavior of plumes from smoldering fires, and evaluate and improve the model with data from wind tunnel experiments. The development of the mechanistic model will take advantage of the extensive research conducted on models for the behavior of hot, moist plumes emitted from cooling towers. In the wind tunnel, we will be in a unique position to control the environment and the composition of fuels to identify the conditions favorable to "superfog" initiation and persistence. This project will result in a mechanistic model that embodies detailed understanding of "superfog" formation associated with smoldering fires. The model will provide information to interpret field studies, and develop simple methods that can be used by land managers to predict the likelihood of "superfog."

Principal Investigator: Marko S. Princevac

Agency/Organization: University of California-Riverside

Branch or Dept: Department of Mechanical Engineering

Other Project Collaborators

Type	Name	Agency/Organization	Branch or Dept
Co-Principal Investigator	Gary L. Achtemeier	Forest Service	SRS-Forestry Sciences Lab-Athens GA
Co-Principal Investigator	Scott L. Goodrick	Forest Service	SRS-Ctr for Forest Disturbance Science
Co-Principal Investigator	Shankar M Mahalingam	University of California-Riverside	Department of Mechanical Engineering
Co-Principal Investigator	Akula Venkatram	University of California-Riverside	Department of Mechanical Engineering
Federal Cooperator	David R. Weise	Forest Service	PSW-Forest Fire Lab-Riverside
Federal Fiscal Representative	Anna Wong	Forest Service	PSW-Pacific Southwest Research Station

Project Locations

Consortium

Alaska

Appalachian

California

Great Basin

Great Plains

Lake States

Oak Woodlands

Northern Rockies

Northwest

Pacific

South

Southern Rockies

Southwest

Tallgrass

Level	State	Agency	Unit
NATIONAL		N/A

Project Deliverables

Final Report ("Results presented in JFSP Final Reports may not have been peer-reviewed and should be interpreted as tentative until published in a peer-reviewed source.")

	ID	Type	Title
	10345	NonRefereed Publication	Numerical and Physical Investigation of the Properties of Superfog
	10344	NonRefereed Publication	Laboratory Measurements and Sensitivity Modeling of Droplet Characteristics and Implications for Super Fog

Supporting Documents

There are no supporting documents available for this project.

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