For turbulent flow in smooth pipes, the entrance length is taken as

Related MCQs

• The friction factor in turbulent flow in smooth pipes depends upon the following
• In case of turbulent flow of a fluid through a circular tube (as compared to the case of laminar flow at the same flow rate) the maximum velocity is ....., shear stress at the wall is ....., and the pressure drop across a given length is ....., the correct words for the blanks are, respectively
• The turbulent flow is hydraulically smooth if the ratio height of roughness projection/the thickness of laminar sub-layer is less than
• The entrance length or length of establishment of flow is
• Commercial cast-iron and steel pipes carrying fluids under pressure are regarded as hydraulically smooth when
• ...... is important in compressible fluid flow problems at high velocities, such as high velocity flow in pipes or motion of high-speed projectiles and missiles.
• The flow is said to be turbulent when Reynolds number is
• The shear in turbulent flow is mainly due to
• The most essential feature of a turbulent flow is
• In turbulent flow the velocity distribution is a function of the distance y measured from the boundary surface and shear friction velocity uf, and follows a