“…The invasive techniques significantly affect the flow field inside the combustor while the non-invasive techniques have no effect on the fluid flow inside the combustor. The invasive techniques include design modifications of the combustor cross section area, 5 insertion of fins, 6,7 flame plate holder, 8 porous medium, stepped combustor, bluff body, wall cavities and ribs etc. 9 Inspired by the presence of bluff bodies in macro-scale industrial combustors, 10 bluff body induced micro-combustors were proposed.…”