The “Flame Travel Distance” (Lf) is the distance from ignition to the flame front position at the specified instant in time, with a maximum value equal to the distance to the edge of the cloud; noting that the ignition source could be located at the cloud center, cloud end, or anywhere in the cloud. 

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Very lean hydrogen vapor cloud explosion testing

Hydrogen is a key energy carrier for modern society. The breaking of the hydrogen bonds within traditional hydrocarbon molecules has been the primary mode of energy utilization since the…

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This material was prepared as an account of work sponsored by an agency of the United States Government.
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The portal brings together and enhances the utility of a variety of tools and web-based content on the safety aspects of hydrogen and fuel cell technologies to help inform those tasked with designing, approving or using systems and facilities, as well as those responding to incidents.

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