This paper presents a numerical investigation that provides a detailed study of heat release effects on the flow for two hypermixing fuel injectors designed for a supersonic combustor. Three injector configurations are compared: a swept compression-expansion ramp (SCER); a castellated blunt trailing edge, and a plane base injector. All injector configurations are strut mounted with hydrogen base-injection. A one-step reaction is used for all reacting cases. Details on near-field flow and mixing mechanisms with effects of heat release are discussed. It is found that heat release decreases mixing significantly in the near-field.
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