|
所在平台: Udemy |
课程主页: https://www.udemy.com/course/fluid-mechanics-part-1/
课程评论：没有评论
课程名称：7小时掌握流体力学 课程概述：本课程专为本科流体力学课程的重要主题而设计。在视觉直观的幻灯片辅导下，学生能轻松掌握概念。课程材料附带幻灯片，使学习更加便捷。为帮助学生快速学习，课程视频总时长仅为7小时，并包含多项实践测试和小测验，以强化学生的理解。该课程旨在以简单的方式和最少的时间帮助学生为大学考试做准备。 课程模块： 模块1：介绍流体及其连续性，流体的物理性质，包括密度、比重、蒸气压力，牛顿粘度定律。理想与真实流体，牛顿流体与非牛顿流体。流体静力学：压力、密度与高度的关系，压力计，平面与曲面上的压力，压力中心，浮力，被浸没与漂浮体的稳定性，均匀加速下的流体质量，压力测量。 模块2：流体流动的运动学：欧拉和拉格朗日方法，流体流动分类，1维、2维和3维流动，稳态、非稳态、均匀、非均匀、层流、湍流、旋转与非旋转流动，流线、路径线、痕迹线、流动管、流体中的速度与加速度、环流与涡度、流函数与势函数，拉普拉斯方程、等势线、流动网及其应用与局限。 模块3：控制体分析质量、动量和能量，流体动力学方程：质量、能量和动量的微分方程（欧拉方程），Navier-Stokes方程（不带证明），流动动力学：伯努利方程，流动中的能量计算，头损失、动力头、静态头和总头，文丘里和孔板流量计，缺口与堰（仅描述）。水力系数，速度测量：皮托管与皮托静压管。 模块4：管道流动：粘性流动：雷诺实验区分层流与湍流，雷诺数的意义，临界雷诺数，管道中的剪切应力与速度分布，流体摩擦定律，摩擦损失，哈根-坡伊塞方程。湍流：达西-韦斯巴赫方程，切赛方程，穆迪图，主要与次要能量损失，水力梯度与总能量线，长管道流动，串联与并联管道，等效管道，虹吸，管道传动力，传输效率，水锤与气蚀。 模块5：边界层：平板上的边界层发展及其厚度定义，位移厚度、动量厚度与能量厚度，层流与湍流边界层，层流亚层，速度分布，冯·卡门动量积分方程，用于边界层的阻力计算，边界分离及控制方法。维度分析：维度分析，巴金汉定理，重要的无量纲数及其意义，几何、运动和动态相似性，模型研究。弗劳德、雷诺、韦伯、考希与马赫法则-模型测试的应用与局限，仅涉及简单问题。 通过这个课程，学生将在短时间内有效掌握流体力学的核心概念，为顺利通过相关考试做好充分准备。
This course is tailor made to cover all the important topics in under graduate Fluid Mechanics course.All the topics are taught with visually intuitive slides which helps the students to learn the concepts easily. The slides are also attached with the course material. The course is designed to help students learn quickly. Hence the entire video duration is made only 7 hours, Many practice tests and quizes are also include to reinforce the student's understandingThis course is mainly designed to help students prepare for the university exams in an easy manner and with minimum timeThetopics covered includeModule 1: Introduction: Fluids and continuum, Physical properties of fluids, density, specific weight, vapour pressure, Newton's law of viscosity. Ideal and real fluids, Newtonian and non-Newtonian fluids. Fluid Statics- Pressure-density-height relationship, manometers, pressure on plane and curved surfaces, center of pressure, buoyancy, stability of immersed and floating bodies, fluid masses subjected to uniform accelerations, measurement of pressure. Module 2: Kinematics of fluid flow: Eulerian and Lagrangian approaches, classification of fluid flow, 1-D, 2-D and 3-D flow, steady, unsteady, uniform, non-uniform, laminar, turbulent, rotational, irrotational flows, stream lines, path lines, streak lines, stream tubes, velocity and acceleration in fluid, circulation and vorticity, stream function and potential function, Laplace equation, equipotential lines, flow nets, uses and limitations. Module 3: Control volume analysis of mass, momentum and energy, Equations of fluid dynamics: Differential equations of mass, energy and momentum (Euler's equation), Navier-Stokes equations (without proof) in cartesian co-ordinates. Dynamics of Fluid flow: Bernoulli's equation, Energies in flowing fluid, head, pressure, dynamic, static and total head, Venturi and Orifice meters, Notches and Weirs (description only for notches and weirs). Hydraulic coefficients, Velocity measurements: Pitot tube and Pitot-static tube. Module 4: Pipe Flow: Viscous flow: Reynolds experiment to classify laminar and turbulent flows, significance of Reynolds number, critical Reynolds number, shear stress and velocity distribution in a pipe, law of fluid friction, head loss due to friction, Hagen Poiseuille equation. Turbulent flow: DarcyWeisbach equation, Chezy's equation Moody's chart, Major and minor energy losses, hydraulic gradient and total energy line, flow through long pipes, pipes in series, pipes in parallel, equivalent pipe, siphon, transmission of power through pipes, efficiency of transmission, Water hammer, Cavitation. Module 5: Boundary Layer: Growth of boundary layer over a flat plate and definition of boundary layer thickness, displacement thickness, momentum thickness and energy thickness, laminar and turbulent boundary layers, laminar sub layer, velocity profile, Von- Karman momentum integral equations for the boundary layers, calculation of drag, separation of boundary and methods of control. Dimensional Analysis: Dimensional analysis, Buckingham's theorem, important non dimensional numbers and their significance, geometric, Kinematic and dynamic similarity, model studies. Froude, Reynolds, Weber, Cauchy and Mach laws- Applications and limitations of model testing, simple problems only
