Want to add that final touch of realism to your fire effects? 
By popular demand from my members, today’s tutorial focuses on creating high-quality Heat Distortion for fire! In this essential Unreal Engine 5 Niagara tutorial, your guide, Ashif Ali, a RealtimeVFX artist from India, will teach you the complete pipeline for simulating the shimmering air around intense heat.
https://dev.epicgames.com/community/learning/tutorials/Zd2a7/unreal-engine-heat-distortion-vfx-for-fire-in-ue5-niagara-photoshop-normal-map-workflow