[kedy6lsy]

Hi i am trying to simulate flame as shown in the picture, where the ignition is at a certain distance from the jet and flame propagate toward the jet in 500ms.

In my simulation, i used species transport and have parabolic profile in my jet inlet and flat velocity in my coflow, i let the simulation run to have the species wash the domain and ignite at around 60mm away from jet exit.

The flame didn't propagate toward the jet as shown in the attachment and remain at the position after 500ms eventhought i have gravity turn on in x-axis.

Could anyone tell me what could have been wrong in my simulation?