The explosions effect in Houdini with the Axiom Solver, render with karma xpu, comp with nuke. The flickering is because of the trial version of Axiom, If you want a perfect experience, please buy the Indie or Commercial version of Axiom.
Axiom Cache: 104GB
Ground Smoke Cache: 68GB
Render: 10min/frame

Download Project File: 

https://www.artstation.com/a/37361777 

or 

https://payhip.com/b/swjkN 

or 

https://www.javen.cn/explosion.html 

or 

https://javencgi.gumroad.com/l/explosion