Qi // Force (FD) proportional to pipe diameter (D); speed (V); fluiddensity (p); and fluid viscosity (u). How we can find an expression forforce (Fp)? (Using Raleigh's Method)Q2 // choose the correct answer:1- The unit of dynamic viscosity of a fluid is-----m2N.sb)m2kg.s?Pa.sd)m2m22- With increase of temperature, viscosity of a fluid----a) Does not changeb) Always increasec) Always decreased) Increase, if the fluid is a gas and decrease, if it is a liquid.3- Shear stress in the Newtonian fluid is proportional to-a) pressureb) strainc) strain rated) the inverse of viscosity4- specific weight of water at 4°C and 1 atm. Pressure is -a)1000m3Nb)1001m3c)9810m3Q3 // Determine the gage pressure at thecenter of the pipe (at point A) show in figure1, with hi-40 cm and hz= 5cm. givenspecific weight of mercury= 133000- Pipe (section view)Nm3Waterspecific weight of water= 9810 "m3Figure 1Mercury---Good Luck---

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Description: Qi // Force (FD) proportional to pipe diameter (D); speed (V); fluiddensity (p); and fluid viscosity (u). How we can find an expression forforce (Fp)? (Using Raleigh's Method)Q2 // choose the correct answer:1- The unit of dynamic viscosity of a flui

The dimensional formula of the drag force is FD=MLT-2. The dimensional formula of the pipe diameter…

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Qi // Force (FD) proportional to pipe diameter (D); speed (V); fluid density (p); and fluid viscosity (u). How we can find an expression for force (FD)? (Using Raleigh's Method) Q2 // choose the correct answer: 1- The unit of dynamic viscosity of a fluid is--- m2 d) kg.s2 m2 Pa.s b) Ns m2 2- With increase of temperature, viscosity of a fluid--- a) Does not change b) Always increase c) Always decrease d) Increase, if the fluid is a gas and decrease, if it is a liquid.

Qi // Force (FD) proportional to pipe diameter (D); speed (V); fluid density (p); and fluid viscosity (u). How we can find an expression for force (FD)? (Using Raleigh's Method) Q2 // choose the correct answer: 1- The unit of dynamic viscosity of a fluid is--- m2 d) kg.s2 m2 Pa.s b) Ns m2 2- With increase of temperature, viscosity of a fluid--- a) Does not change b) Always increase c) Always decrease d) Increase, if the fluid is a gas and decrease, if it is a liquid.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter12: Fluid Dynamics And Its Biological And Medical Applications

Section: Chapter Questions

Problem 24PE: (a) Using Bernoulli's equation, show that the measured fluid speed v for a pitot tube, like the one...

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(a) Using Bernoulli's equation, show that be measured fluid speed v for a pitot tube, like the one in figure 14.32(b), is given by v=( 2gh)1/h , where h is be height of be manometer fluid, p' is the density of the manometer fluid, p is the density of the moving fluid, and g is be acceleration due to gravity. (Note that v is indeed proportional to the square root of h, as stated in text) (b) Calculate v for moving air if a mercury manometer's h is 0.200 m. Figure 14.32 Measurement of fluid speed on Bernoulli’s principle. (a) A manometer is connected to two tubes close together and small enough not to disturb the flow. Tube 1 is open at the end facing the flow. A dead spot having zero speed is created there. Tube 2 has an opening on the side, so the fluid has a speed v across; thus, pressure there drops. The difference in pressure at the manometer is 12v22 , so h is proportional to . 12v22 (b) This type of velocity measuring device is a Prandtl tube, also known as a pitot tube.
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(a) Using Bernoulli's equation, show that the measured fluid speed v for a pitot tube, like the one in Figure 12.7(b), is given by v=( 2gh)1/2 , where h is the height of the manometer fluid, is the density of the manometer fluid, is the density of the moving fluid, and g is the acceleration due to gravity. (Note that v is indeed proportional to the square root of h, as stated in the text.) (b) Calculate v for moving air if a mercury manometer's h is 0.200 m. Figure 12.7 Measurement of fluid speed based on Bernoulli's principle. (a) A manometer is connected to two that are close together and small enough not to disturb the flow. Tube 1 is open at the end facing the flow. A dead spot having zero speed is created there. Tube 2 has an opening on the side, and so the fluid has a speed V across the opening; thus, pressure there drops. The difference in pressure at the manometer is 12v22 , and so h is proportional to 12v22 . (b) This type of velocity measuring device is a Prandtl tube, also known as a pitot tube.
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Figure P15.52 shows a Venturi meter, which may be used to measure the speed of a fluid. It consists of a Venturi tube through which the fluid moves and a manometer used to measure the pressure difference between regions 1 and 2. The fluid of density tube moves from left to right in the Venturi tube. Its speed in region 1 is v1, and its speed in region 2 is v2. The necks cross-sectional area is A2, and the cross-sectional area of the rest of the tube is A1. The manometer contains a fluid of density mano. a. Do you expect the fluid to be higher on the left side or the right side of the manometer? b. The speed v2 of the fluid in the neck comes from measuring the difference between the heights (yR yL) of the fluid on the two sides of manometer. Derive an expression for v2 in terms of (yR yL), A1, A2, tube, and mano. FIGURE P15.52
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