m-/S, thế gap between the When the flow rate per unit wiath is Q' = lates is 5 mm, the device estimates the shear stress at the top wall to be -0.05 Pa. Estimate the viscosity of the fluid.
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can you help me with part c) please
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- Q) The velocity v (m/s) of air flowing past a flat surface is measured at several distances y(m) away from the surface. Use Newton'sviscosity law to determine the shear stress t (N/m³) at the surface (y=0). dv 'dy Assume a value of dynamic viscosity =1.8* 10- N.s/hm² y, m V, m/s 0.002 0.287 0.006 0.899 0.012 |1.915 0.018 3.048 0.024 4.299 (r-7) Use two forward đifference approximations for h=0.006. Estimate the approximate percent relative error, &. b- , (t=?) Use two forward difference approximations with a step size of 0.012 (h=0.012). Estimate the approximatepercent relative error, , e.. (r-?) ApplyRichardson extrapolation. Estimate the approximate percent relative error, & (r=?) Use unequally spaced three data and the first-derivative of a second-order d- Langrange polynomial to evaluate the derivative (y=0) and shear stress. Estimate the approximate percent relative error, Eg Compare the approximate estimates of the error ([ed ) for the formulas used.The laminar flow of a fluid with a constant viscosity, 4, inside a channel is governed by the following boundary value problem (strong form): d'u dp for y E (0, h) "dy dr u = 0 at y = 0 and y = h vhere u is the fluid velocity and is the pressure drop in the direction of the flow. a) Derive the weak form of the boundary value problem described above.QI A ball made of INOX AISI 365 steel with density of 8.52 gricm3 was used to determine the viscosity of oil with specific gravity of 0.91. In the viscometer, the ball traveled 19 cm in 2.2 seconds. If the diameter of the ball is 2.95 mm, what is the viscosity of the oil in pa.s ? assume that water density is 1000 kg/m'.
- The kinematic viscosity of liquid oil (10³) C.S (1 stoke =100 C.S) and relative density = 0.92. Find the viscosity of the fluid oil in c.g.s and SI %3D systems.Dimensional Analysis and Hydraulic Similitude (fluid mechanics) 1. Water at 60F at 12 ft/s in a 6-in. pipe. (a) For dynamic similarity, determine the velocity of medium fuel oil at 90F flowing in a 12-in. pipe. (b) Determine the diameter of the pipe that should be used if a medium lubricating oil at 70oF if flowing at a velocity of 50 ft/s. find the: a. velocity : ____________________ fps b. diameter : ____________________ in.. Ooredoo = Question 1 Not yet answered Marked out of 3.00 Flag question 9:01 PM moodle.nct.edu.om Private Determine the kinematic viscosity (Stokes) of oil having the relative density as 0.86. The shear stress at a point in oil is 1.56 N/m² and the velocity gradient at that point is 0.36 per second. Solution: (i) Viscosity (in Ns/m²) = (ii) Dynamic Viscosity (in poise) = (iii) Mass density of oil (in kg/m³) = 65% iv) Kinematic viscosity (in stokes) = ▼
- A square block weighing 1.1 KN and 250 mm on an edge slides down an 20 degrees inclined on a film of oil 6.0 micrometer thick. Assuming a linear velocity profile in the oil, what is the terminal speed of the block in m/s. The viscosity of the oil is 7 mPa-s. a.5.16 b.5.62 c.5.75 d.5.48(b) The kinematic viscosity of a fluid used for model is one third of the kinematic viscosity of the fluid used for prototype. During testing of the model, if viscosity and gravity forces are predominant, find the scale ration, velocity ratio and discharge rationOil (dynamic viscosity) between a block of mass M (5 kg) and the substrate(μ = 1.6 Pa.s), oil film thickness (h = 0.7 mm)). Block base surfaceIts area is given as A = 28 cm2. Block m (1kg weight) with a wire ropeIt depends on the mass. At time t = 0, mass m is released. According to these data;a) Find the viscous forces when the block moves with V = 1 m / s velocity.b) Derive an equation for the block velocity as a function of time (t).c) Plot the velocity-time variation for t = 0 and t = t.
- A- Womersley number (a) of a human aorta is 20 and for the rabbit aorta is 17, the blood density is approximately the same across the species. The values of viscosity were 0.0035 Ns/m² for the human and 0.0040 Ns/m² for the rabbit. The diameter of the aorta is 2.0 cm for the man, and 0.7 cm for the rabbit, estimate the heart rate beats per minute (bpm) for both speciesSAE 10W30 motor oil has a dynamic viscosity of 0.21 kilograms per meter second and a specific gravity of 0.896 (a) What is the density of the motor oil in units of kilograms per cubic meter?Q.1 A simple and accurate viscometer can be made from a length of capillary tubing. If the flow rate and pressure drop are measured, and the tube geometry is known, the viscosity of Newtonian liquid can be computed. A test of a certain liquid in a capillary viscometer gave the following data: Flow rate: 880 mm /s, Tube length: 1 m, ,3, Tube diameter: 0.50 mm, Pressure drop: 1.0 MPа The viscosity of liquid will be (pig =999 kg/m:), assuming the flow to be laminar. A 0.37x10*Ns/m В 3.7x10* Ns/m 1.74x10* Ns/m C 1.74x10* Ns/m