Define the following terms: mass-average velocity, diffusion velocity, stationary medium, and moving medium.
What will be an ideal response?
The mass-average velocity of a medium at some location is the average velocity of the mass at that location relative to an external reference point. It is the velocity that would be measured by a velocity sensor such as a pitot tube, a turbine device, or a hot wire anemometer inserted into the flow. The diffusion velocity at a location is the average velocity of a group of molecules at that location moving under the influence of concentration gradient. A stationary medium is a medium whose mass average velocity is zero. A moving medium is a medium that involves a bulk fluid motion caused by an external force.
You might also like to view...
This projection establishes views of an object projected upon two or more planes of projection.
a. graphic projection b. orthographic projection c. pictorial projection d. multiview projection
Sending devices on multiplexed buses are called masters
Indicate whether the statement is true or false
This type of joint is used to prevent gaps in molding caused by expansion and contraction of wood moldings
A) Scarf joint B) Miter joint C) Coped joint D) Compound joint
Technician A states a typical electronically controlled CI engine has thermal efficiency exceeding 40%. Technician B states 90% of the heat created from burning fuel in a CI engine ends up as rejected heat. Which technician is correct?
A. Technician A only. B. Technician B only. C. Both A and B. D. Neither A nor B.