Final answer:
Blades and stators in an axial compressor are designed to control the flow and decrease the velocity of a gas by reducing the size of the opening or introducing turbulence.
Step-by-step explanation:
The devices that decrease the velocity of a gas inside an axial compressor are typically related to mechanisms that cause a reduction in the size of the opening or introduce obstructions, creating turbulence that slows the fluid. However, in regard to specific types of devices shown in the studied figures, no direct example of such a device in an axial compressor context is provided. In engineering environments such as those involving compressors, these principles are applied in the design of blades and stators to control the flow and pressure of the gas.
The devices that decrease the velocity of a gas inside an axial compressor are entrainment devices. These devices use increased fluid speed to create low pressures, which then entrain one fluid into another.For example, a common aspirator uses a high-speed stream of water to create a region of lower pressure, which draws in the gas and decreases its velocity.Other examples include atomizers, paint sprayers, and carburetors that use similar techniques to move liquids.