Three-Dimensional Hydrodynamic Simulations of Turbulence-Driven Deflagration-to-Detonation Transition in Unconfined Reactive Flows
ORAL
Abstract
Building on a newly experimentally validated turbulence-driven deflagration-to-detonation transition (tDDT) mechanism, we present three-dimensional hydrodynamic simulations that explore the role of DDT in complex, unconfined reactive flows. Our work specifically applies to thermonuclear Type Ia supernovae (SNe Ia), where the tDDT has been suggested as the mechanism of detonation initiation in the turbulent thermonuclear reacting flows. We will discuss the implications of these simulations, focusing on the interplay between turbulence and combustion leading to detonation. We will offer insights into the fundamental mechanisms governing DDT -- and contributing to enhanced predictive capabilities for energetic astrophysical phenomena.
*We acknowledge support from NASA ATP award 80NSSC22K0630. This work used the ACCESS Stampede 3 supercomputer at the University of Texas at Austin’s Texas Advanced Computing Center through allocation TG-AST100038 from the Advanced Cyberinfrastructure Coordination Ecosystem: Services & Support (ACCESS) program, which is supported by U.S. National Science Foundation grants #2138259, #2138286, #2138307, #2137603, and #2138296.
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Presenters
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Akshay Dongre
- University of Massachusetts Dartmouth