The critical Reynolds number for external flow (which started as a laminar flow) over thin flat plate is |1700 500,000 2300 Depends on fluid properties.

A well with 4 in. radius produces oil with a viscosity of0.3 cP, at a rate of 200 barrels/day, from a reservoir that is 15 ft.thick. The pressure in the wellbore as a function of time is: t (mins) 1 5 10 20 30 60 Pw(psi) 4740 4667 4633 4596 4573 4535 Use the "semi-log straight line" method to estimate the permeability, K

Find the flow behavior index values ​​for a viscometer for the fluid that gives the following apparent viscosity values ​​versus different shear rates? Explain what is the fluid behavior type? silding speed (1/s)        Apparent Viscosity (cP)

B2) An automotive engine can be assumed as rectangular block with approximation size 0.4 m high, 0.6 m wide, and 0.7 m long as shown in Figure 6. The ambient air is at 1 atm and 15°C where air density (P) = 1.225 kg/m and kinematic viscosity (v) = 1.47x105 m2/s. Air 85km/h 15°C Engine Block Figure 6 a) Calculate the friction coefficient (C) and investigate the force acting on the bottom surface of the engine block as the car travels at the velocity of 85 km/h. Assume the flow to be turbulent (Cr = 0.074/Re5) over the entire surface because of the constant agitation of the engine block. b) An engine oil at 40°C with kinematic viscosity (v) = 2.485×104 m³/s is flowing over a long flat plate with velocity of 4 m/s. Determine the critical distance xer from the leading edge of the plate where the flow become turbulent (Recr = 5x105), and analyze the thickness of the boundary layers over a length of 2xer. Given boundary layer thickness for laminar flow is, öx = 4.91x/Re,2 and turbulent flow,…

1. Any equation that comes out of the differential approach is valid at every point in the flow field. On the other hand, the integral approach gives us a point by point value and not an average value. True or False   2. During the analysis of fluid flow, we are more often interested in obtaining the average velocity, and one of the common ways of obtaining the average velocity is to take an average across the flow cross-section. This is called area-average velocity, average along the direction parallel to the principal direction of flow. True or False   3. A crude oil with a density of 875 kilogram per cubic meter is pumped and flowing at 1.5 meter per second through a pipeline 1 meter in diameter. The maximum viscosity of the oil to exhibit a laminar flow behavior is 625 centipoise.   True or False

If the hematocrit of John's blood wereto change from 42% to 55% and at the same time the diameter of one ofJohn's vessels were to decrease by 1%. Using Poisselle's equation, by how much(and in what direction) would John's blood pressure have to change inorder to maintain the same volume flow rate?

Airflows over two thin flat plates are shown. The velocity profiles and boundary thickness are to scale. Case I Case II Compared to case II, the Reynolds Number for Case I is

Give me an explanation (Dodge and Metzner Correlation)with any mathematical example in finding (f) once through the graph and once through the equation -16/Re 0.01 Experimental regions Exptrapolated regions 0.001 10000 1000 Generalized Reynolds number. Re 100000 Fanning Friction Factor an overview ... 1 4 2-п 0.4 (n)0.75 log (Re'f2) n1.2 VF Fanning fhiction factor,

d)  Calculate the mass flow rate per unit width of an ideal flow going through the same height as the boundary layer thickness. e)  Through calculation relate the difference between the mass flow rates in parts (c) and (d) to the local boundary layer displacement thickness. In not more than 60 word justify your answer. Use sketch(s) to illustrate your justification. f)  Does the assumed velocity profile satisfy the pressure boundary condition? In not more than 30-40 words and including the use of an appropriate equation justify your answer.

Conduct thorough a research on Boundary layer and viscous sub layer, Shear stress in circular pipe as it relates to mechanics  of fluids