Turbine exhaust velocity refers to the velocity of the exhaust gases or fluid exiting a turbine system. It represents the speed at which the exhaust gases are expelled from the turbine.
In the context of a gas turbine engine, the turbine exhaust velocity is determined by the expansion of high-pressure and high-temperature gases as they pass through the turbine section. The hot gases expand and impart a force on the turbine blades, causing them to rotate. The rotational energy is then used to drive the compressor and other components of the engine.
The exhaust velocity is influenced by several factors, including the design and efficiency of the turbine, the pressure and temperature of the gases entering the turbine, and the specific properties of the working fluid. Generally, higher pressures and temperatures at the inlet, as well as improved turbine efficiency, can result in higher exhaust velocities.
Turbine exhaust velocity is an important parameter in determining the performance characteristics of a turbine system, such as power output, thrust generation in jet engines, or efficiency in power generation applications.