Fluid Mechanics - Vol 2 | 8. Newton's Second Law by Abraham | Learn Smarter
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8. Newton's Second Law

The chapter delves into Newton's second law in fluid mechanics, emphasizing the relationships between force, mass, and acceleration at both particle levels and in terms of fluid flows. It introduces concepts such as local and convective acceleration, and explains the application of Taylor series in fluid dynamics. Furthermore, it provides insights into how to compute material derivatives for fluid properties and the acceleration of fluid particles in various coordinate systems.

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Sections

  • 8

    Newton's Second Law

    Newton's Second Law describes the relationship between force, mass, and acceleration in motion, emphasizing their vector nature and providing foundational principles for fluid dynamics.

  • 8.2

    Particle Levels And Time Derivative Of Velocity

    This section explains the relationship between force, mass, acceleration, and the time derivatives of velocity at the particle level, emphasizing the decomposition of acceleration into local and convective components.

  • 8.3

    Taylor Series And Acceleration Representation

    This section covers the application of Taylor series in understanding acceleration at the particle level, connecting concepts of fluid dynamics with Newtonian mechanics.

  • 8.4

    Acceleration Fields And Velocity Components

    This section discusses the relationship between velocity, acceleration, and force in fluid mechanics, focusing on concepts such as local and convective acceleration.

  • 8.4.1

    Definitions Of Material Derivative

    The section discusses the concept of the material derivative, how it relates to particle motion, and its significance in fluid mechanics.

  • 8.4.2

    Local And Convective Acceleration Components

    This section introduces local and convective acceleration components, highlighting their distinction in fluid dynamics and how they relate to changes in velocity and motion.

  • 8.4.2.1

    Local Acceleration

    This section discusses the fundamental concepts of local acceleration in fluid dynamics, linking particle motion to acceleration and velocity fields.

  • 8.4.2.2

    Convective Acceleration

    This section discusses convective acceleration in fluid dynamics, describing how it arises from velocity gradients and can be represented in terms of local and convective acceleration.

  • 8.5

    Material Derivative Of Density And Pressure

    This section discusses the concept of material derivatives in fluid mechanics, particularly focusing on density and pressure, and their relationship with acceleration and velocity.

  • 8.6

    Examples And Problem Solving

    This section discusses Newton's second law, fluid particle acceleration, and introduces Taylor series concepts for multi-variable acceleration fields.

  • 8.6.1

    Problem 1: Finding Material Acceleration

    This section explains the concept of material acceleration in fluid mechanics, focusing on the relation between acceleration, velocity, and the differentiation of these variables with respect to time.

  • 8.6.2

    Problem 2: Analyzing Flow Properties

    This section discusses the analysis of fluid flow properties using Newton's second law and its application to particle dynamics.

  • 8.7

    Summary Of Concepts

    This section explores Newton's second law and its application to fluid mechanics, focusing on acceleration, velocity fields, and the relationship between local and convective acceleration.

  • 8.7.1

    Acceleration Field

    This section explores the concept of acceleration in fluid dynamics, focusing on its definition, calculation methods, and relevance in analyzing fluid motion.

  • 8.7.2

    Motion And Deformation Of Fluid Particles

    This section discusses the application of Newton’s second law to fluid particles, explaining concepts such as acceleration, velocity, and deformation in fluid mechanics.

Class Notes

Memorization

What we have learnt

  • Force is equal to mass mult...
  • Acceleration can be describ...
  • The use of Taylor series is...

Final Test

Revision Tests