第十章 两相流动理论基础.ppt

Chapter 10
Fluid Mechanics
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第十章两相流动理论基础
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Chapter 10 Fundamentals of two-phase flow
§10-1 Introduction
§10–2 Summary of two-phase flow
§10-3 Resistance of mobile
§10-4 Sedimentation velocity of particle
§10-5 Hydraulic transport transport of material
§10-6 Pneumatic transport of material
Exercises of Chapter 10
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第十章两相流动理论基础
§10-1 引言
§10–2 两相流动概述
§10-3 运动物体的阻力
§10-4 颗粒的沉降速度
§10-5 物料的水力输送
§10-6 物料的气力输送
第十章习题
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§10-1 Introduction
This chapter introduce basic concepts, equation and some methods. Whereas plexity,diversity and levity,advanced analysis relate to extensive knowledge, here only mon two-phase flow phenomenon and some simple method deciding important parameter. It established the theory base for studying advanced two-phase flow.
Fundamental of two-phase flow
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两相流动理论基础
§10-1 引言
本章介绍两相流动的基本概念、基本方程及一些处理方法。鉴于两相流动的复杂性、多样性和多变性,深入分析所涉及的知识十分广泛,这里仅介绍常见的两相流动现象及确定一些重要参数的简单方法,为进一步深入分析研究两相流动奠定基本的理论基础。
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So called “phase”is existing form for matter. Generally, there are three phases solid,liquid and gas. Mixed flow of any two or more phases infusible matter called multiphase flow. Multiphase flow mon phenomenon in nature,daily life and many as cloud,fog, rain and snow phenomenon;dirt in atmosphere,sand in river blood flow anism; engine,burning in boiler, generate electricity, refrigerate, vaporize in distil ; flow in congeal cycle, oil, mine and transportation of natural gas,matter flowed in all kinds of stove , pagoda in chemical production; mill run in mining industry, removing dirt in environment defense and so on.
§10-2 Summary of two-phase flow
Fundamental of two-phase flow
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两相流动理论基础
所谓“相”是指物质存在的形态。通常有固、液、气三相。任何两相或两相以上不相溶物质的混合流动,统称为多相流动。多相流动是自然界、人类日常生活和许多工程中常见的流动现象。如自然界的云、雾、雨、雪现象,大气中的烟尘、水流中的泥沙、生物体内的血液流动、发动机、锅炉中的燃烧、发电、制冷和蒸馏过程中的蒸发、凝结循环系统中的流动,石油、天然气的开采和输送,化工生产中各种炉、塔中物质的流化,采矿工业中的选矿,环保工业中的除尘等等。
§10-2 两相流动概述
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Two-phase flow may be plotted three class according to matter state: gas-solid two-phase flow;liquid-solid two-phase flo