e/Stream thrust averaging

Information
has gloss	eng: In fluid dynamics, stream thrust averaging is a process used to convert 3 dimensional flow through a duct into 1 dimensional uniform flow. It makes the assumptions that the flow is mixed adiabatically and without friction. However, due to the mixing process, there is a net increase in the entropy of the system. Although there is an increase in entropy, the stream thrust averaged values are more representative of the flow than a simple average as a simple average would violate the 2nd Law of Thermodynamics.
lexicalization	eng: Stream thrust averaging
instance of	c/Equations of fluid dynamics