According to axial wall temperature distributions on pulsed detonation chamber wall measured from experiment

the quasi-steady state heat flux along the detonation tube with ladder distribution was deduced under a specific frequency.Based on the quasi-steady thermal load

a series of computations were conducted to analyze the cooling effects with array jet impingement.The results show that:the jet velocity from rear rows is bigger than that from the front rows due to end wall effects

the cooling action is stronger near the pulsed detonation tube edge

and the impingement cooling effect is worse in the middle part because the impinging jet is weakened by cross-flow forming from the front rows.Under the same cooling flow Reynolds number at circular passage inlet

the array jet holes are reasonably arranged at middle area of pulsed detonation chamber.When the ratio of the impinging space to diameter is 1.5

the cooling effect seems to be best with uniform axial temperature distribution and lowest peak temperature.And smaller diameter of the cooling holes is also beneficial to improving the cooling effects.