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UID:2e8dd30e-36f8-4a18-836a-d5cc133eb7ea@nexttoyou
DTSTAMP:20261106T164800Z
DTSTART:20261112T190000Z
DTEND:20261112T200000Z
SUMMARY:ME 250 Seminar Series: Dr. Joseph Kalman
LOCATION:Winston Chung Hall 205/206
DESCRIPTION:Leveraging Crystalline Oxidizer Microstructure to Advance Mult
 iphase Combustion Systems\n\nAbstract:\n\nNext generation propulsion syst
 ems are needed to improve the range\, speed\, and safety of rocket motors
  whereas chemical looping combustion is required to modernize power produ
 ction and resource utilization. Advancements in both applications relies 
 on resolving how the microstructure of crystalline oxidizers influences s
 ystem reactivity. Ammonium perchlorate (AP) and copper (II) oxide are wid
 ely used oxidizers for solid rocket motors and chemical looping combustio
 n\, respectively. However\, the oxidizers’ microstructural evolution duri
 ng reaction has not yet been used to control combustion processes. This t
 alk presents recent and ongoing work trying to leverage the intimate conn
 ection between crystalline microstructure and reactivity. For propulsion 
 applications\, shear rate-controlled recrystallization of AP is shown to 
 directly influence the heat release amount and dynamics based upon the cr
 ystal orientation. Preliminary results indicate that crystals exhibiting 
 the lowest exothermicity in low heating rate conditions burn the fastest.
  For power production\, the physics of a new flame-based approach to chem
 ical looping combustion are studied using inverse hybrid CuO(s) dust flam
 es. Experimental measurements indicate that with greater CuO(s) particle 
 loading\, flame propagation begins to transition from H2-O2 dominated sys
 tem to H2-CuO controlled reaction. This result will facilitate\n\nhttp://
 next-to-u.app/events/2e8dd30e-36f8-4a18-836a-d5cc133eb7ea
URL:http://next-to-u.app/events/2e8dd30e-36f8-4a18-836a-d5cc133eb7ea
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