A fluid whose density is practically independent of pressure (such as a liquid) is commonly referred to as an incompressible fluid, although it is more proper to refer to incompressible flow. A flow in which density varies significantly is called compressible flow. Analysis A fluid flow during which the density of the fluid remains nearly constant is called incompressible flow. 1-2C Solution We are to define incompressible and compressible flow, and discuss fluid compressibility. Discussion As we shall see in later chapters, there different approximations are used in the analysis of fluid flows based on their classification. The flow of liquids in a pipe is called open-channel flow if the pipe is partially filled with the liquid and there is a free surface, such as the flow of water in rivers and irrigation ditches. The flow in a pipe or duct is internal flow if the fluid is completely bounded by solid surfaces. Analysis External flow is the flow of an unbounded fluid over a surface such as a plate, a wire, or a pipe. Chapter 1 Introduction and Basic Concepts PROPRIETARY MATERIAL Introduction, Classification, and System 1-1C Solution We are to define internal, external, and open-channel flows. No part of this Manual may be reproduced, displayed or distributed in any form or by any means, electronic or otherwise, without the prior written permission of McGraw-Hill. This Manual may not be sold and may not be distributed to or used by any student or other third party. No other use or distribution of this Manual is permitted. By opening and using this Manual the user agrees to the following restrictions, and if the recipient does not agree to these restrictions, the Manual should be promptly returned unopened to McGraw-Hill: This Manual is being provided only to authorized professors and instructors for use in preparing for the classes using the affiliated textbook. (McGraw-Hill) and protected by copyright and other state and federal laws. 1-1 Solutions Manual for Fluid Mechanics: Fundamentals and Applications by engel & Cimbala CHAPTER 1 INTRODUCTION AND BASIC CONCEPTS PROPRIETARY AND CONFIDENTIAL This Manual is the proprietary property of The McGraw-Hill Companies, Inc. If you are a student using this Manual, you are using it without permission.

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Chapter 1 Introduction and Basic Concepts PROPRIETARY MATERIAL.

Mecanica de fluidos cengel cimbala pdf