PPT-2019/09/26 Effect of expansion ratio on flame acceleration during hydrogen fueled gas

Jun Yaguchi Wookyung Kim Toshio Mogi and Ritsu Dobashi Department of Chemical System Engineering The University of Tokyo Introduction A precise understanding of the flame turbulence is indispensable to perform an appropriate risk assessment of hydrogen fueled gas explosion. Objectives. . . 1. Determine the. . emission spectrum of Hydrogen and other elements.. 2. Calculate the expected wavelengths of H using the Rydberg equation.. 3. Determine the composition of unknown solutions using flame tests.. Morgan Worsfold . &. Paul Amyotte. Dalhousie University, Halifax, NS, Canada. Manny Marta. NOVA Chemicals, Sarnia, ON, Canada. Module Basics. Scope. Fires, explosions, and combustible dust hazards. Jeff Barnhouse. Pd.5. Explosions. A product of combustion accompanied by the creation of gasses and heat is an explosion.. What creates an explosion is the rapid buildup of gas pressure. Detonation occurs so rapidly that oxygen in the air cannot participate in the reaction. Leaving it that many explosions have their own source of oxygen.. . Thomas Cleary & Erik . Johnsson. Fire Research Division. Engineering Laboratory. National Institute of Standards and Technology. Gaithersburg, MD. ICHS 2011. September 12-14, 2011. San Francisco, California-USA. Explosions. Explosives: substances . that undergo a rapid oxidation reaction with the production of large quantities of gases. . A sudden . buildup of gas pressure . determines the nature of the explosion. . by. Jeremiah W. Murphy. NSF AAP Fellow. (University of Washington). Collaborators:. Christian . Ott. (Caltech), Adam Burrows (Princeton U.) . What is the mechanism of explosion?. Multi-Messenger. Astrophysics: Exhibit A. Describe the speedometer on a car that is entering a highway, drives for 25 miles and then exits the highway.. Consider the two situations below. When a shuttle bus approaches a stop, the driver begins to apply the brakes to slow down 5.0 s before actually reaching the stop. The speed changes from 9.0 m/s to 0 m/s over time.. Acceleration is a change in velocity. Speed or direction. Centripetal Acceleration. Acceleration can mean a change in direction, not just speed. Centripetal acceleration. Acceleration that occurs in a circular motion. V. ector quantity: . magnitude (value) & direction. R. ate . at which an object changes its velocity. . “. How fast an object is getting faster”. If the velocity of an object is changing, it is accelerating!. FLAME CURRENT MEASUREMENT Flame current of the device can be measured using a standard micro-ammeter by simply touching the meter leads to the 2 PIN labeled FC as shown in Figure 2 Flame current must People all around the world enjoy watching the fireworks explosions and loud sound, light and colours. physicians are retiring other armed conflicts have been short-lived and until this past decade the US was largely spared of the scourge of mega-terrorist attacks This primer introduces information re THE BLAST AND IMPACT DIAGNOSTICS LAB. Explosions are difficult to study because they happen so quickly and with such destructive power. Yet knowing how they work is important for protecting human lives. . 1. Dr. Nisha Sharma, Associate Professor, Pharmacy, C.S.J.M. University. DETECTORS. . Flame Ionization Detector (Nanogram - ng). ↑ Temp. of H. 2. flame (H. 2. +O. 2. +N. 2. ) ionizes compds eluted from column into flame. .