Vortex generators placed in the interblade channel of a compressor rectifier

A device for rectifying airflow in a turbine engine, or in a compressor, the device comprising:

• a plurality of fixed vanes extending in a circular fashion between an inner collar and an outer collar concentric with each other and defining inter-vane channels forming an air duct in which air to be compressed circulates;
• the inner collar including at least one vortex generator extending inside the air duct to reduce corner vortices, the vortex generator being positioned axially in the inter-vane channel, between an axial position of a leading edge of the vanes and that of a trailing edge of the vanes,
• wherein a furthest upstream point of the vortex generator is positioned at two thirds, +/−10%, towards a downstream side of an axial span of the vanes.