What fluid property is responsible for the development of the velocity boundary layer? For what kinds of fluids will there be no velocity boundary layer in a pipe?
What will be an ideal response?
The fluid viscosity is responsible for the development of the velocity boundary layer. For the idealized inviscid fluids (fluids with zero viscosity), there will be no velocity boundary layer.
You might also like to view...
In Problem below, if the destination node is located at 5 hops apart from a given source node, what is the maximum possible value of
(a) The number of alternate paths of length of 5 hops? (b) Alternate disjoint paths of length 5 hops? If the updated message is sent every 5 seconds, what is the upper limit on the number of messages initiated periodically if a table-driven routing protocol is to be used? Explain clearly
Obtain the inverse Fourier transform of the following signals.
 figure 1.png)
Why would a 35°F medium-temperature case need to defrost?
A) It is common for water to freeze at 35° in higher elevations. B) The store manager might decide to maintain a lower box temperature. C) The coil temperature for a 35°F box operates below freezing. D) A 35°F temperature case does not need to defrost.
Technician A says a new technician should be trained in the maintenance and operation of any special shop equipment. Technician B says the new technician should not attempt to use any special shop equipment without first being instructed in its use. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B