Transition from laminar flow to turbulent flow is aided by the__________________?
A. Surface roughness and curvature (i.e. sharp corners)
B. Vibration
C. Pressure gradient and the compressibility of the flowing medium
D. All A., B. & C.
A. Surface roughness and curvature (i.e. sharp corners)
B. Vibration
C. Pressure gradient and the compressibility of the flowing medium
D. All A., B. & C.
A. h1 > h2 < h3
B. h1 > h2 > h3
C. h2 < h1 < h3
D. h1 < h2 < h3
A. The length of entrance region of pipe, in which full development of fluid flow takes place
such that velocity profile does not change downstream, is called the transition length
B. Transition length for laminar flow of Newtonian fluids in a pipe of diameter ‘d’ is equal to
0.05. D.NRe
C. Transition length for turbulent flow of Newtonian fluids in a smooth pipe of diameter ‘d’ is
equal to 50 D
D. All A., B. and C.
A. Gravity
B. Drag
C. Buoyant
D. All A., B., & C.
A. Small differential
B. Atmospheric
C. Absolute
D. Gage
A. Increases
B. Increases linearly
C. Decreases
D. Remain constant
A. Pressure
B. Maximum velocity
C. Average velocity
D. Point velocity