There are five relationships that are most useful in fluid mechanics problems: kinematic, stress, conservation, regulating, and constitutive. A fluid is defined as a material that continuously deforms under a constant load. Frame, in Biofluid Mechanics (Second Edition), 2015įluid mechanics is the study of fluids at rest and in motion. Īpply the momentum principle to liquids in jets and pipes.ĭavid A.Use Bernoulli's equation to measure flow rate and velocity Įmploy the concept of continuity of flow.Understand Archimedes' principle and buoyancy Ĭalculate hydrostatic forces on plane and curved submerged surfaces.Understand the transmission of pressure in liquids and its application to hydraulics Recognize some fluid properties and types of flow Objectivesīy the end of this chapter, the reader should be able to: Most of these principles should be familiar – conservation of energy, Newton's laws of motion – and so the chapter concentrates on their application to liquids. This will allow you to apply the physical principles behind some of the most common applications of fluid mechanics in engineering. The purpose of this chapter is to teach you the fundamentals of engineering fluid mechanics in a very general manner so that you can understand the way that forces are produced and transmitted by fluids that are, first, essentially at rest and, second, in motion. Some of the well-known examples are jet propulsion, aerofoil design, wind turbines and hydraulic brakes, but there are also applications which receive less attention such as the design of mechanical heart valves. Engineers are interested in fluid mechanics because of the forces that are produced by fluids and which can be used for practical purposes. Physicists study the flow of extremely high temperature gases through magnetic fields in a search for an acceptable method of harnessing the energy of nuclear fusion reactions. For example, meteorologists try to predict the motion of the fluid atmosphere swirling around the planet so that they can forecast the weather.

Many scientific disciplines have an interest in fluid mechanics. Fluid mechanics is the study of the behaviour of liquids and gases, and particularly the forces that they produce.

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