Improving Freight Fire Safety: Analysis of the Effectiveness of Mist-Controlling Additives in Mitigating Crash-Induced Diesel Fires

Ratner, Albert; University of Iowa. Dept. of Mechanical and Industrial Engineering

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Improving Freight Fire Safety: Analysis of the Effectiveness of Mist-Controlling Additives in Mitigating Crash-Induced Diesel Fires

2009-12-01
By Ratner, Albert

[PDF-2.81 MB]

English

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Creators:

Ratner, Albert
Corporate Creators:

University of Iowa. Dept. of Mechanical and Industrial Engineering
Corporate Contributors:

Mid-America Transportation Center ; University of Nebraska--Lincoln

Mid-America Transportation Center ; University of Nebraska--Lincoln Less -
Subject/TRT Terms:

[+]

Combustion Diesel Fuels Fire Prevention Fire Retardants Freight And Passenger Traffic Research Hub
Publication/ Report Number:

25-1121-0001-271
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Mid-America Transportation Center
NTL Classification:

NTL-FREIGHT-FREIGHT;NTL-SAFETY AND SECURITY-SAFETY AND SECURITY;
Abstract:

Adding long chained polymers to diesel has been proposed as a method to prevent crash fires by arresting the breakup of diesel fuel into a fine mist in transportation related accidents. The effect of such additives on the flow properties of diesel was investigated by studying the impact of poly-butadiene and diesel blend drops on a solid surface using high speed imaging. The addition of the polymer imparted shear-thinning behavior to diesel, and the base viscosities increased rapidly with polymer concentration. Four concentrations of the polymer were tested at three different impact speeds under atmospheric pressure. Maximum spread factors and spreading velocities of the drops were found to decrease with increasing polymer concentration. This suggests that polymer addition decreases the tendency of diesel to break into smaller droplets. A numerical model of a drop impact process is being developed using FLUENT 12, and will be used to study the non-Newtonian effects in the flow of diesel blended with polymers. Results of these experiments and numerical modeling can facilitate the development of polymers with specific properties to affect the flow of diesel in the desired range of strain rates.
Format:

PDF
Collection(s):

University Transportation Centers US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:d028b314918c9edb04ca748f213399f8bc9a24ebe1b63d5723ea2bd3349ab2e0
Download URL:

https://rosap.ntl.bts.gov/view/dot/34436/dot_34436_DS1.pdf
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Improving Freight Fire Safety: Analysis of the Effectiveness of Mist-Controlling Additives in Mitigating Crash-Induced Diesel Fires

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