1 The relative density of a fluid is 1.26 and its dynamic viscosity is 1.50 Pa.s. Calculate its (i) specific weight and (ii) kinematic viscosity. (Ans. y= 12.336 kN/m³, v = 1.193 × 10-³ m²/s) 2 From a table of properties of liquids it was found that, at 20°C, carbon tetrachloride has a dynamic viscosity of 9.67 × 10* Pa.s and a kinematic viscosity of 6.08 × 10-7 m²/s. Calculate its (i) relative density and (ii) specific weight. (Ans. RD = 1.5936, y= 15.602 kN/m³)

1 The relative density of a fluid is 1.26 and its dynamic viscosity is 1.50 Pa.s. Calculate its (i) specific weight and (ii) kinematic viscosity. (Ans. y= 12.336 kN/m³, v = 1.193 × 10-³ m²/s) 2 From a table of properties of liquids it was found that, at 20°C, carbon tetrachloride has a dynamic viscosity of 9.67 × 10* Pa.s and a kinematic viscosity of 6.08 × 10-7 m²/s. Calculate its (i) relative density and (ii) specific weight. (Ans. RD = 1.5936, y= 15.602 kN/m³)

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.13P: 5.13 The torque due to the frictional resistance of the oil film between a rotating shaft and its...

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5.13 The torque due to the frictional resistance of the oil film between a rotating shaft and its bearing is found to be dependent on the force F normal to the shaft, the speed of rotation N of the shaft, the dynamic viscosity of the oil, and the shaft diameter D. Establish a correlation among these variables by using dimensional analysis.
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.
C1 (a). A lubricating oil having the dynamic viscosity of 0.056 poise and specific gravity of 1.17. Calculate (i) the density of oil in kg/m3, (ii) the weight density of oil in N/m3, (iii) the kinematic viscosity in stokes, and (iv) the specific volume in m3/kg. C1 (b). The capillary effect in a glass tube of 2.8 mm diameter, when immersed in (1) water and (2) mercury are 7.7 mm and -3.5 mm respectively. Calculate the value of surface tension in contact with air for water and mercury in N/m. Take, the contact angle for water =0° and mercury =130°. C1(a). (i).the density of oil in kg/m3 C1(a). (ii) the weight density of oil in N/m3 C1(a). (iii) the kinematic viscosity in stokes C1(a). (iv) the specific volume in m3/kg C1 (b). 1.the value of surface tension (water) in N/m C1 (b). 2. the value of surface tension (mercury) in N/m
C1 (a). A lubricating oil having the dynamic viscosity of 0.057 poise and specific gravity of 1.1. Calculate () the density of oil in kg/m?, (i) the weight density of oil in N/m². ii) the kinematic viscosity in stokes, and (iv) the specific volume in m /kg. (4 Marks) C1 (b). The capillary effect in a glass tube of 2.1 mm diameter, when immersed in (1) water and (2) mercury are 8.5 mm and -2.8 mm respectively. Calculate the value of surface tension in contact with air for water and mercury in N/m. Take, the contact angle for water =0° and mercury =130°. (3 Marks) (Enter only the values by referring to the unit given. Also, upload the handwritten answers in the link provided) C1(a).6).the density of oil in kg/m (1 Mark) C1(a). (i) the weight density of oil in N/m? (1 Mark) C1(a). (ii) the kinematic viscosity in stokes (1 Mark) C1a). (iv) the specific volume in m?/kg (1 Mark) C1 (b). 1.the value of surface tension (water) in N/m (1.5 Marks) C1 (b). 2. the value of surface tension…
C1 (a). A lubricating oil having the dynamic viscosity of 0.058 poise and specific gravity of 1.11. Calculate (i) the density of oil in kg/m3, (ii) the weight density of oil in N/m3,(iii) the kinematic viscosity in stokes, and (iv) the specific volume in m³/kg. C1 (b). The capillary effect in a glass tube of 2.6 mm diameter, when immersed in (1) water and (2) mercury are 7.4 mm and -3.5 mm respectively. Calculate the value of surface tension in contact with air for water and mercury in N/m. Take, the contact angle for water =0° and mercury =130°. C1(a).(i).the density of oil in kg/m3 C1(a). (ii) the weight density of oil in N/m3 C1(a). (iii) the kinematic viscosity in stokes C1(a). (iv) the specific volume in m³/kg C1 (b). 1.the value of surface tension (water) in N/m C1 (b). 2. the value of surface tension (mercury) in N/m
SAE 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?
(a). A lubricating oil having the dynamic viscosity of 0.055 poise and kinematic viscosity of 0.11 stokes. Calculate (i) the density of oil in kg/m³, (ii) the weight density of oil in N/m³, (i) the specific gravity, and (iv) the specific volume in m/kg.
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 species
Q1: Apply appropriate solution method using math principles to prove that "the pressure at a point in a fluid has the same magnitude in all directions". Support your answer with sketch. Answer: Px Pz = Pn P are the mean pressures at the three surfaces in the x- and z-directions. Q2: Formulate the issue and identify key variables to prove that [AP = P2 - P, = pg Az = y, Az], where y, and p are the specific weight and density of the fluid, respectively. Az is the vertical distance. Support your answer with sketch. Q3: From fluid mechanics science perspective, define the center of gravity and the center of pressure. Q4: Identify the hydrostatic force acting on the top surface of a submerged rectangular plate by applying principles of engineering for the following cases: 1 tilted plate, (2 vertical plate, and 3 horizontal plate. Support your answer with sketch. Q5: By applying principles of fluid mechanics science, define the "rigid-body" and identify its features. Q6: Formulate the issue…
Problem 3: A piston 10 cm in diameter and 50 cm in length moves coaxially in a cylinder 10.02 cm in diameter. The space between the piston and the cylinder is filled with oil of kinematic viscosity 9.25×10 m²/s and density 0.88. a) Assuming a linear variation in velocity, determine the force required to move the piston at 0.5 m/s. b) Determine the torque necessary to rotate the piston at 1200 rpm assuming. 50 cm 10 cm 10.02 cm oil piston
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'.
For a certain ideal gas R = 25.8 ft.lb /lb °R and k =1.09a. What are the values of cp and cv?b. What mass of this gas would occupy a volume of 15 cu ft at 75 psia and 80 °F?c. If 30 Btu are transferred to this gas at constant volume in (b), what are the resultingtemperature and pressure? include the diagram