Effects of heat loss and viscosity friction at walls on flame acceleration and deflagration to detonation transition

Huang Jin¹, Han Wenhu^{2, †}, Gao Xiangyu¹, Wang Cheng²

Temperature contours and streamlines in the initial stage of oscillating flame: tS l / f l = (a) 22.4, (b) 28.1, (c) 32.7, (d) 34.7, (e) 45.6, (f) 49.6, (g) 50.3, (h) 52.9, (i) 55.5, and (j) 56.8.