Abstract: The turbulent burning velocity (ST) is one of the most important combustion properties controlling combustor operability limits, directly influencing blowoff, flashback, and combustion instabilities. Hydrogen has particularly ...

Abstract: In this paper, we present combustor acoustics in a high-pressure liquid-fueled rich burn—quick quench—lean burn (RQL) styled swirl combustor with two separate fuel circuits. The fuel circuits are the primary (which has a ...

Abstract: A confluence of technology development, policy support, and industry investment trends is accelerating the pace of Hydrogen (H2) technology demonstrations, increasing the likelihood of power sector impacts. In preparation ...

Abstract: Lean, premixed combustor designs have almost completely replaced nonpremixed combustors for industrial gas turbine applications where NOx emissions are regulated. Nonetheless, these designs have also introduced turndown ...

Abstract: Abstract. Staged combustion systems like the rich–relaxation–quench–lean (RRQL) offer the potential for low nitrogen oxides (NOx) emissions while burning ammonia (NH3). This process involves rich premixed NH3–air combustion ...

Abstract: Abstract. Ammonia (NH3) is a carbon–free energy source and hydrogen carrier, but its fuel–bound nitrogen can lead to significant nitrogen oxides (NOx) emissions. Staged combustion strategies, such as rich–quench–lean, can ...

Abstract: Abstract. Low carbon and renewable fuels are an active area of research due to their potential to reduce both stack and life-cycle carbon emissions. Ammonia is one such fuel as it has storage, production, infrastructure, ...

Abstract: Thermoacoustic instabilities in annular or circular combustors are often coupled with azimuthal modes. These modes can be characterized by a spin ratio (SR), which quantifies the dominant mode between two counterrotating ...