vaned

Vaned is an adjective meaning equipped with vanes—blade-like projections that direct, straighten, or accelerate a fluid. The term is used primarily in engineering and fluid dynamics to describe components whose surfaces are built from or include blades that interact with a flow.

In engineering and fluid dynamics, vaned components include rotor blades on a disk (vaned rotors), stationary blades (vaned stators), and diffusers that use vanes to modify flow. These structures are designed to control direction, velocity, and pressure of the moving fluid, and to improve efficiency or performance of the machine.

Applications include steam and gas turbines, where vaned nozzles or stator vanes guide the working fluid onto turbine blades; axial compressors, where stator vanes reduce swirl and raise static pressure; and vaned impellers in pumps and fans, where blades convert energy between the fluid and the rotating machinery. Vaned designs also appear in air ducts, housings, and other flow paths to steer or straighten flow, reduce swirl, or enhance efficiency.

The term derives from vane, a blade or flat projection; in technical contexts, vaned indicates the presence of blades forming part of a moving or stationary flow path.