System for injecting a fluid, compressor and turbomachine comprising the same

The system (6) has multiple nozzles (8), which are arranged in a side wall (2) that limits stream (4) and area oriented diagonally in flow direction (x). The nozzles have a rectangular flat cross-section. An injecting channel (10) is arranged with constriction (32) upstream the nozzles, where the constriction forms a boundary surface (34). The boundary surface defines the nozzle cross-section. The injecting channel is extended upstream of the constriction. An independent claim is included for a compressor provided with a rear edge area.