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所在平台: Udemy |
课程主页: https://www.udemy.com/course/fluid-mechanics-laws-flow-measurement-kinematicspart-1/
课程评论：没有评论
Coursera 课程 “流体动力学：定律、流量测量与运动学（第一部分）” 课程总结 本课程为大学生提供流体动力学的全面基础，重点讲解基本原理、流量测量技术和流体运动的运动学分析。 **第一单元：流体动力学基础** 本单元介绍流体及其性质，包括牛顿流体与非牛顿流体、牛顿粘度定律、密度、粘度、表面张力和可压缩性。课程深入讲解了静止流体中的压力变化，包括帕斯卡定律和流体静力学定律。学生将学习如何计算浸没在液体中的各种表面上的静水压力，并探索浮力、浮心和稳心高度的概念，以分析浮体稳定性，这对于船舶设计至关重要。 **第二单元：流体流量测量** 本单元重点介绍流量测量装置的原理和应用。学生将学习文丘里流量计、孔板流量计和皮托管，并推导其流量和速度的数学表达式。课程通过实例分析了这些装置的能量损失和准确性。此外，本单元还涵盖了矩形、三角形、梯形和阶梯形堰等明渠流量测量技术。此外，课程还对各种计量设备进行了比较，以指导其在不同应用中的选择。 **第三单元：流体运动学** 本单元侧重于流体的运动，而不考虑作用力。它介绍了不同类型的流体流（定常/非定常、均匀/非均匀流），并推导了一维和三维形式的连续性方程。学生将学习流函数和速度势函数，包括它们的性质、数学公式和物理意义，以及在无旋流中的关系。学生还将分析流体粒子的速度和加速度，并通过等势线和流网对流体进行图形化解释，这有助于分析渗流和流体-结构相互作用问题。 本课程通过大量的数值示例和解题环节，帮助学生巩固概念理解和实践技能，为流体力学、水力学和计算流体力学（CFD）的高级学习奠定坚实基础。
This course offers a comprehensive study of fluid mechanics, focusing on its fundamental principles, flow measurement techniques, and kinematic analysis of fluid motion. Designed for undergraduate engineering students, it builds the foundation required for advanced applications in mechanical, civil, environmental, and aerospace engineering.Module 1: Fundamentals of Fluid MechanicsThe course begins with an introduction to fluid mechanics , Newtonian & Non-Newtonian Fluids , Newton Law of viscosity and the essential properties of fluids, such as density, viscosity, surface tension, and compressibility. It proceeds with Pascal's Law and the Hydrostatic Law, which govern pressure variation in static fluids. Using practical examples, students explore the calculation of hydrostatic forces on horizontal, vertical, inclined, and curved surfaces submerged in liquids. The concepts of buoyancy and center of buoyancy are introduced to analyze floating bodies. The module culminates with the study of metacentric height and stability conditions (stable, unstable, neutral) for floating structures, which are vital in ship design and marine engineering.Module 2: Fluid Flow MeasurementThis module covers the principles and applications of flow measuring devices. Students study Venturimeters, Orifice meters, and Pitot tubes, including the derivation of mathematical expressions for discharge and velocity. Each device is analyzed with practical examples to help students understand energy losses and accuracy. The module also includes flow measurement in open channels using notches and weirs such as rectangular, triangular, trapezoidal, and stepped notches. A comparison of various devices provides insight into their selection based on application needs.Module 3: Fluid KinematicsThis module focuses on the motion of fluids without considering forces. It introduces types of fluid flows (steady/unsteady, uniform/non-uniform), and develops the continuity equation in both one-dimensional and three-dimensional forms. Students learn about stream functions and velocity potential functions, including their properties, mathematical formulation, and physical interpretation. The relationship between these two functions is explored in irrotational flows. Further, students analyze the velocity and acceleration of fluid particles and understand the graphical interpretation of flow using equipotential lines and flow nets, which are essential tools for analyzing seepage and fluid-structure interaction problems.Throughout the course, each topic is supported with numerical examples and problem-solving sessions to strengthen conceptual understanding and practical skills. This course lays a solid groundwork for advanced studies in fluid dynamics, hydraulics, and computational fluid mechanics (CFD).
