# Fox and mcdonalds introduction to fluid mechanics pdf

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The primary objective of this text is to help users develop an orderly approach to problem solving. Thus we always start from governing equations, state assumptions clearly, and try to relate mathematical results to corresponding physical behaviour. The Fox-McDonald-Pritchard solution methodology used in this text is illustrated in numerous Examples in each chapter.

Newton's second law of motion — The net force acting on a system is directly proportional to the product of the. First law of thermodynamics — The change in stored energy of a system equals the net energy added to the system. Second law of thermodynamics — The entropy of any isolated system cannot decrease during any process.

Principle of angular momentum — The net torque acting on a system is equal to the rate of change of angular. Open-Ended Problem Statement: The barrel of a bicycle tire pump becomes quite warm during use. Explain the. Discussion: Two phenomena are responsible for the temperature increase: 1 friction between the pump piston and. Friction between the pump piston and barrel converts mechanical energy force on the piston moving through a. Lubricating the piston helps to provide a good seal with the.

Temperature of the trapped air rises as it is compressed. The compression is not adiabatic because it occurs during a. Heat is transferred from the warm compressed air in the pump barrel to the cooler surroundings.

This raises the temperature of the barrel, making its outside surface warm or even hot! Compare these mechanisms with a stone as it bounces after being thrown along a roadway. Discussion: Observation and experience suggest two behaviors when a stone is thrown along a water surface:.

If the angle between the path of the stone and the water surface is steep the stone may penetrate the water surface. Some momentum of the stone will be converted to momentum of the water in the resulting splash. Then, because the. If the angle between the path of the stone and the water surface is shallow the stone may not penetrate the water.

The splash will be smaller than if the stone penetrated the water surface. This will transfer less. The only drag force on the stone will be from. The drag will be momentary, causing the stone to lose only a portion of its kinetic.

When the stone is thrown with speed and angle just right, it may skip several times across the water surface. With each. After several skips the stone loses enough forward speed to penetrate the.

Observation suggests that the shape of the stone significantly affects skipping. Essentially spherical stones may be. Flatter, more disc-shaped stones are more likely to. By contrast, no stone can ever penetrate the pavement of a roadway. Each collision between stone and roadway will be. Regardless of the. The shape of the stone is unlikely to affect trajectory of bouncing from a roadway significantly.

Open navigation menu. Close suggestions Search Search. User Settings. Skip carousel. Carousel Previous. Carousel Next. What is Scribd? Uploaded by Har. Document Information click to expand document information Date uploaded Sep 10, Did you find this document useful?

Is this content inappropriate? Report this Document. Flag for inappropriate content. Download now. Save Save solution-manual-for-fox-and-mcdonald-s-introductio For Later. Related titles. Carousel Previous Carousel Next. Robert W. Fox, Alan T. McDonald, Philip J.

Jump to Page. Search inside document. Given: Five basic conservation laws stated in Section Write: A word statement of each, as they apply to a system. Solution: Assume that laws are to be written for a system. Conservation of mass — The mass of a system is constant by definition.

Newton's second law of motion — The net force acting on a system is directly proportional to the product of the system mass times its acceleration. First law of thermodynamics — The change in stored energy of a system equals the net energy added to the system as heat and work. Second law of thermodynamics — The entropy of any isolated system cannot decrease during any process between equilibrium states.

Principle of angular momentum — The net torque acting on a system is equal to the rate of change of angular momentum of the system. Explain the mechanisms responsible for the temperature increase.

Discussion: Two phenomena are responsible for the temperature increase: 1 friction between the pump piston and barrel and 2 temperature rise of the air as it is compressed in the pump barrel. Friction between the pump piston and barrel converts mechanical energy force on the piston moving through a distance into thermal energy as a result of friction.

Lubricating the piston helps to provide a good seal with the pump barrel and reduces friction and therefore force between the piston and barrel. The compression is not adiabatic because it occurs during a finite time interval. Discussion: Observation and experience suggest two behaviors when a stone is thrown along a water surface: 1.

Then, because the stone is heavier than water it will sink. If the angle between the path of the stone and the water surface is shallow the stone may not penetrate the water surface. This will transfer less momentum to the water, causing less reduction in speed of the stone. The only drag force on the stone will be from friction on the water surface. The drag will be momentary, causing the stone to lose only a portion of its kinetic energy.

Instead of sinking, the stone may skip off the surface and become airborne again. With each skip the stone loses some forward speed. After several skips the stone loses enough forward speed to penetrate the surface and sink into the water. Essentially spherical stones may be made to skip with considerable effort and skill from the thrower. Flatter, more disc-shaped stones are more likely to skip, provided they are thrown with the flat surface s essentially parallel to the water surface; spin may be used to stabilize the stone in flight.

Each collision between stone and roadway will be inelastic; friction between the road surface and stone will affect the motion of the stone only slightly. Regardless of the initial angle between the path of the stone and the surface of the roadway, the stone may bounce several times, then finally it will roll to a stop. Documents Similar To solution-manual-for-fox-and-mcdonald-s-introduction-to-fluid-mechanics-8th-edition. Duyen Nguyen.

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Newton's second law of motion — The net force acting on a system is directly proportional to the product of the. First law of thermodynamics — The change in stored energy of a system equals the net energy added to the system. Second law of thermodynamics — The entropy of any isolated system cannot decrease during any process. Principle of angular momentum — The net torque acting on a system is equal to the rate of change of angular. Open-Ended Problem Statement: The barrel of a bicycle tire pump becomes quite warm during use. Explain the.

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Views 13 Downloads 3 File size KB. Given: Five basic conservation laws stated in Section Write: A word statement of each, as they apply to a system. Solution: Assume that laws are to be written for a system. Conservation of mass — The mass of a system is constant by definition.

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