Fast Turbulent Flames
Introduction
-
Fast moving turbulent flames can transition into detonation waves
-
This process is known as Deflagration-to-Detonation Transition (DDT)
-
Applicable for industrial explosions and detonation-based engine
Research Details
-
Investigating high-speed turbulent flames on the verge of transition to a detonation
-
Fully resolved Direct Numerical Simulation (DNS)
-
Based on realistic experimental shock tube conditions
-
3-D reactive compressible Navier-Stokes equations
-
One-step hydrogen-air reaction model
-
Massively parallel simulation with ~85 billion grid cells
Collaborators
Laura O'Neill, Sai Sandeep Dammati, Texas A&M University
Jessica Chambers, Kareem Ahmed, University of Central Florida
Alexei Poludnenko, University of Connecticut
Vadim Gamezo, NRL
Research Topics
Two-dimensional pressure contours for the channel midsection
-
Flame is denoted in black
-
Leading shock followed by an accelerating turbulent flame
-
Flame generates an additional shock
-
Shocks collide and a rarefaction wave is formed