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Index
Title
Copyright
Contents
Preface
Conventions and Notation
Chapter 1. The Physical Properties of Fluids
1.1 Solids, liquids and gases
1.2 The continuum hypothesis
1.3 Volume forces and surface forces acting on a fluid
Representation of surface forces by the stress tensor
The stress tensor in a fluid at rest
1.4 Mechanical equilibrium of a fluid
A body ‘floating’ in fluid at rest
Fluid at rest under gravity
1.5 Classical thermodynamics
1.6 Transport phenomena
The linear relation between flux and the gradient of a scalar intensity
The equations for diffusion and heat conduction in isotropic media at rest
Molecular transport of momentum in a fluid
1.7 The distinctive properties of gases
A perfect gas in equilibrium
Departures from the perfect-gas laws
Transport coefficients in a perfect gas
Other manifestations of departure from equilibrium of a perfect gas
1.8 The distinctive properties of liquids
Equilibrium properties
Transport coefficients
1.9 Conditions at a boundary between two media
Surface tension
Equilibrium shape of a boundary between two stationary fluids
Transition relations at a material boundary
Chapter 2. Kinematics of the Flow Field
2.1 Specification of the flow field
Differentiation following the motion of the fluid
2.2 Conservation of mass
Use of a stream function to satisfy the mass-conservation equation
2.3 Analysis of the relative motion near a point
Simple shearing motion
2.4 Expression for the velocity distribution with specified rate of expansion and vorticity
2.5 Singularities in the rate of expansion. Sources and sinks
2.6 The vorticity distribution
Line vortices
Sheet vortices
2.7 Velocity distributions with zero rate of expansion and zero vorticity
Conditions for ∇ϕ to be determined uniquely
Irrotational solenoidai flow near a stagnation point
The complex potential for irrotational solenoidai flow in two dimensions
2.8 Irrotational solenoidai flow in doubly-connected regions of space
Conditions for ∇ϕ to be determined uniquely
2.9 Three-dimensional flow fields extending to infinity
Asymptotic expressions for ue and uv
The behaviour of ϕ at large distances
Conditions for ∇ϕ to be determined uniquely
The expression of ϕ as a power series
Irrotational solenoidal flow due to a rigid body in translational motion
2.10 Two-dimensional flow fields extending to infinity
Irrotational solenoidal flow due to a rigid body in translational motion
Chapter 3. Equations Governing the Motion of a Fluid
3.1 Material integrals in a moving fluid
Rates of change of material integrals
Conservation laws for a fluid in motion
3.2 The equation of motion
Use of the momentum equation in integral form
Equation of motion relative to moving axes
3.3 The expression for the stress tensor
Mechanical definition of pressure in a moving fluid
The relation between deviatoric stress and rate-of-strain for a Newtonian fluid
The Navier-Stokes equation
Conditions on the velocity and stress at a material boundary
3.4 Changes in the internal energy of a fluid in motion
3.5 Bernoulli’s theorem for steady flow of a Motionless non-conducting fluid
Special forms of Bernoulli’s theorem
Constancy of H across a transition region in one-dimensional steady flow
3.6 The complete set of equations governing fluid flow
Isentropic flow
Conditions for the velocity distribution to be approximately solenoidai
3.7 Concluding remarks to chapters 1, 2 and 3
Chapter 4. Flow of a Uniform Incompressible Viscous Fluid
4.1 Introduction
Modification of the pressure to allow for the effect of the body force
4.2 Steady unidirectional flow
Poiseuille flow
Tubes of non-circular cross-section
Two-dimensional flow
A model of a paint-brush
A remark on stability
4.3 Unsteady unidirectional flow
The smoothing-out of a discontinuity in velocity at a plane
Plane boundary moved suddenly in a fluid at rest
One rigid boundary moved suddenly and one held stationary
Flow due to an oscillating plane boundary
Starting flow in a pipe
4.4 The Ekman layer at a boundary in a rotating fluid
The layer at a free surface
The layer at a rigid plane boundary
4.5 Flow with circular streamlines
4.6 The steady jet from a point source of momentum
4.7 Dynamical similarity and the Reynolds number
Other dimensionless parameters having dynamical significance
4.8 Flow fields in which inertia forces are negligible
Flow in slowly-varying channels
Lubrication theory
The Hele-Shaw cell
Percolation through porous media
Two-dimensional flow in a corner
Uniqueness and minimum dissipation theorems
4.9 Flow due to a moving body at small Reynolds number
A rigid sphere
A spherical drop of a different fluid
A body of arbitrary shape
4.10 Oseen’s improvement of the equation for flow due to moving bodies at small Reynolds number
A rigid sphere
A rigid circular cylinder
4.11 The viscosity of a dilute suspension of small particles
The flow due to a sphere embedded in a pure straining motion
The increased rate of dissipation in an incompressible suspension
The effective expansion viscosity of a liquid containing gas bubbles
4.12 Changes in the flow due to moving bodies as R increases from 1 to about 100
Chapter 5. Flow at Large Reynolds Number: Effects of Viscosity
5.1 Introduction
5.2 Vorticity dynamics
The intensification of vorticity by extension of vortex-lines
5.3 Kelvin’s circulation theorem and vorticity laws for an inviscid fluid
The persistence of irrotationality
5.4 The source of vorticity in motions generated from rest
5.5 Steady flows in which vorticity generated at a solid surface is prevented by convection from diffusing far away from it
(a) Flow along plane and circular walls with suction through the wall
(b) Flow toward a ‘stagnation point’ at a rigid boundary
(c) Centrifugal flow due to a rotating disk
5.6 Steady two-dimensional flow in a converging or diverging channel
Purely convergent flow
Purely divergent flow
Solutions showing both outflow and inflow
5.7 Boundary layers
5.8 The boundary layer on a flat plate
5.9 The effects of acceleration and deceleration of the external stream
The similarity solution for an external stream velocity proportional to xm
Calculation of the steady boundary layer on a body moving through fluid
Growth of the boundary layer in initially irrotational flow
5.10 Separation of the boundary layer
5.11 The flow due to bodies moving steadily through fluid
Flow without separation
Flow with separation
5.12 Jets, free shear layers and wakes
Narrow jets
Free shear layers
Wakes
5.13 Oscillatory boundary layers
The damping force on an oscillating body
Steady streaming due to an oscillatory boundary layer
Applications of the theory of steady streaming
5.14 Flow systems with a free surface
The boundary layer at a free surface
The drag on a spherical gas bubble rising steadily through liquid
The attenuation of gravity waves
5.15 Examples of use of the momentum theorem
The force on a regular array of bodies in a stream
The effect of a sudden enlargement of a pipe
Plates
Chapter 6. Irrotational Flow Theory and its Applications
6.1 The role of the theory of flow of an inviscid fluid
6.2 General properties of irrotational flow
Integration of the equation of motion
Expressions for the kinetic energy in terms of surface integrals
Kelvin’s minimum energy theorem
Positions of a maximum of q and a minimum of p,
Local variation of the velocity magnitude
6.3 Steady flow: some applications of Bernoulli’s theorem and the momentum theorem
Efflux from a circular orifice in an open vessel
Flow over a weir
Jet of liquid impinging on a plane wall
Irrotational flow which may be made steady by choice of rotating axes
6.4 General features of irrotational flow due to a moving rigid body
The velocity at large distances from the body
The kinetic energy of the fluid
The force on a body in translational motion
The acceleration reaction
The force on a body in accelerating fluid
6.5 Use of the complex potential for irrotational flow in two dimensions
Flow fields obtained by special choice of the function w(z)
Conformal transformation of the plane of flow
Transformation of a boundary into an infinite straight line
Transformation of a closed boundary into a circle
The circle theorem
6.6 Two-dimensional irrotational flow due to a moving cylinder with circulation
A circular cylinder
An elliptic cylinder in translational motion
The force and moment on a cylinder in steady translational motion
6.7 Two-dimensional aerofoils
The practical requirements of aerofoils
The generation of circulation round an aerofoil and the basis for Joukowski’s hypothesis
Aerofoils obtained by transformation of a circle
Joukowski aerofoils
6.8 Axisymmetric irrotational flow due to moving bodies
Generalities
A moving sphere
Ellipsoids of revolution
Body shapes obtained from source singularities on the axis of symmetry
Semi-infinite bodies
6.9 Approximate results for slender bodies
Slender bodies of revolution
Slender bodies in two dimensions
Thin aerofoils in two dimensions
6.10 Impulsive motion of a fluid
Impact of a body on a free surface of liquid
6.11 Large gas bubbles in liquid
A spherical-cap bubble rising through liquid under gravity
A bubble rising in a vertical tube
A spherical expanding bubble
6.12 Cavitation in a liquid
Examples of cavity formation in steady flow
Examples of cavity formation in unsteady flow
Collapse of a transient cavity
Steady-state cavities
6.13 Free-streamline theory, and steady jets and cavities
Jet emerging from an orifice in two dimensions
Two-dimensional flow past a flat plate with a cavity at ambient pressure
Steady-state cavities attached to bodies held in a stream of liquid
Chapter 7. Flaw of Effectively Inviscid Fluid with Vorticity
7.1 Introduction
The self-induced movement of a line vortex
The instability of a sheet vortex
7.2 Flow in unbounded fluid at rest at infinity
The resultant force impulse required to generate the motion
The total kinetic energy of the fluid
Flow with circular vortex-lines
Vortex rings
7.3 Two-dimensional flow in unbounded fluid at rest at infinity
Integral invariants of the vorticity distribution
Motion of a group of point vortices
Steady motions
7.4 Steady two-dimensional flow with vorticity throughout the fluid
Uniform vorticity in a region bounded externally
Fluid in rigid rotation at infinity
Fluid in simple shearing motion at infinity
7.5 Steady axisymmetric flow with swirl
The effect of a change of cross-section of a tube on a stream of rotating fluid
The effect of a change of external velocity on an isolated vortex
7.6 Flow systems rotating as a whole
The restoring effect of Coriolis forces
Steady flow at small Rossby number
Propagation of waves in a rotating fluid
Flow due to a body moving along the axis of rotation
7.7 Motion in a thin layer on a rotating sphere
Geostrophic flow
Flow over uneven ground
Planetary waves
7.8 The vortex system of a wing
General features of the flow past lifting bodies in three dimensions
Wings of large aspect ratio, and ‘ lifting-line ’ theory
The trailing vortex system far downstream
Highly swept wings
Appendices
1 Measured values of some physical properties of common fluids
(a) Dry air at a pressure of one atmosphere
(b) The Standard Atmosphere
(c) Pure water
(d) Diffusivities for momentum and heat at 15 °C and 1 atm
(e) Surface tension between two fluids
2 Expressions for some common vector differential quantities in orthogonal curvilinear co-ordinate systems
Publications referred to in the text
Subject Index
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