Q) Glycerin at 10 degrees * C flows over a flat plate 6 m long, maintained at 30 degrees * C with a velocity of 1.5 m/s. Determine the total drag force and the heat transfer rate over the entire plate per unit width.
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Q: D. A thin flat plate ( 45 cm X 90 cm ) is immersed in a stream of glycerin (p = 1258 kg/m and u =…
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- Topic: Heat transfer Completely solve and box the final answer. 1. A 20degC water flows to 50cmx60cm flat plate with velocity of 5.2m/s . The flat plate surface temperature is maintained at 40deg C. The air flows parallel to the 50cm side of the plate. If the kinematic viscosity of water is 78x10-8 m2/s, at what length the flow become turbulent?Topic: Heat transfer Completely solve and box the final answer. A 20degC water flows to 50cmx60cm flat plate with velocity of 6m/s . The flat plate surface temperature is maintained at 40deg C. The air flows parallel to the 50cm side of the plate. If the kinematic viscosity of water is 78x10-8 m2/s, at what length the flow become turbulent? If the average laminar heat transfer coefficient of water is 7740W/m2 degC, what is the overall heat transfer at the laminar section?The erythrocyte sedimentation rate (heaviness) test of a blood sample is often used as a diagnosis of immune disorders and some other diseases. Assuming that the red blood cells are about a sphere with a diameter of (approximately 5 um) and a density (g/ml 1.125), and the density and viscosity of the plasma in which the red blood cells are settled (Pa.s), (1025 kg/m3 10-3 x 1.5) On arrangement and acceleration m/s2 9.81 Calculate the erythrocyte sedimentation rate (settlement rate). 9:40 73% * "l Asiacell 90 x 10-6 m/s 1 0.9 x 10-6 m/min 90 x 10-6 m/min
- Topic: Heat transfer Completely solve and box the final answer. A 20degC water flows to 50cmx60cm flat plate with velocity of 6m/s . The flat plate surface temperature is maintained at 40deg C. The water flows parallel to the 50cm side of the plate. If the kinematic viscosity of water is 78x10-8 m2/s, What is the local heat flux (Q/A) at the end of the plate (k=0.72 W/m deg C, Re=3840000, and Pr=0.7)?ASSIGNMENT A flat plate with a length of 2.4 m and width 0.9 m moves horizontally with velocity 1 m/s in still air with a density 1.21 kg/m³ and kinematic viscosity of 1.49 x 105 m²/s. Determine 8, 8*, 0 at 2.4 m from the leading edge, and to Cf Cof and Df by using the Von Karman approximate method. The boundary layer is laminar, solve the problem by using the following velocity profiles. Determine the corresponding percentage error for the calculated 8, 8*, and 0. (i) Linear (ii) Parabolic (iii) Cubic (iv) Sin wave (u/U)=y/8 21 21 21 U =sin 28A spherical particle falling at a terminal speed in a liquid must have the gravitational force balanced by the drag force and the buoyant force. The buoyant force is equal to the weight of the displaced fluid, while the drag 2R?g -(Ps - P1), where R is the radius of the sphere, Pg is its density, and p, is the density of the fluid, and n the coefficient of 9n force is assumed to be given by Stokes' law, Fs = 6trnv. The terminal speed is given by v = viscosity. Using the equation above, find the viscosity of motor oil (in mPa · s) in which a steel ball of radius 0.7 mm falls with a terminal speed of 8.16 cm/s. The densities of the ball and the oil are 7.86 and 0.88 g/mL, respectively. mPa · s
- QI/ If the velocity profile of the boundary layer is :O find the thickness of boundary layer, the shear stress at trailing edge and the drag force on one side of plate 2 m long, if it is immersed in water flowing with velocity of 0.4 m/s (p 998 D = 1.007*10-6 m2/s %3DSand particles (SG = 2.7), approximately spherical withdiameters from 100 to 250 μm, are introduced into anupward-flowing stream of water at 20°C. What is theminimum water velocity that will carry all the sand particlesupward?An approximation for the boundary-layer shape in is the formula u(y) - U sin 0 sys d where U is the stream velocity far from the wall and d is the boundary layer thickness, as in Fig. If the fluid is helium at 20°C and 1 atm, and if U = 10.8 m/s and 8= 3 cm, use the formula to (a) estimate the wall shear stress Tw in Pa, and (b) find the position in the boundary layer where t is one-half of Tw. -- y = 6 u(y)
- ASSIGNMENT A flat plate with a length of 2.4 m and width 0.9 m moves horizontally with velocity 1 m/s in still air with a density 1.21 kg/m³ and kinematic viscosity of 1.49 x 105 m²/s. Determine 8, 8*, 0 at 2.4 m from the leading edge, and to C Cof and De by using the Von Karman approximate method. The boundary layer is laminar, solve the problem by using the following velocity profiles. Determine the corresponding percentage error for the calculated 6, 8*, and 0. (iv) Sin wave 28Given engine oil at 60 oC flows over the upper surface of a 5 m long flat plate which temperature is 20 oC. Justify the value of x (m2/s) to get the turbulent flow for the total drag force and the rate of heat transfer per unit width of the plate. Discuss your idea.Engine oil at 100°C flows on the top surface of a 1-m-long flat plate maintained at 20°C. The oil’s freestream speed (u infinity) is 0.1 m/s. Find the engine oil properties from the table A.5 A. Evaluate the Reynolds number, local convection coefficient, heat flux and shear stress at the end of the plate (x = L). Is the air flow laminar or turbulent over the plate?B. Evaluate the average convection coefficient, average heat flux, average shear stress and drag force over the plate.