Introduction to fluid mechanics

Được đăng lên bởi leminhthanhth
Số trang: 152 trang   |   Lượt xem: 5805 lần   |   Lượt tải: 1 lần
“Fields and fluids”

Part B:
Introduction to
fluid mechanics
Andy Buffler
Department of Physics
University of Cape Town


Fundamentals of fluid mechanics, 4th Edition, Munson, Young and
Okiishi, (Wiley, 2002)
A physical introduction to fluid mechanics, Smits, (Wiley, 2000)
Introduction to fluid mechanics, 5th Edition, Fox and McDonald,
(Wiley, 1998)
Fluid mechanics, 4th Edition, Douglas, Gasiorek and Swaffield,
(Prentice Hall, 2001)
The Feynman lectures on physics, Volume II, Feynman, Leighton and
Sands, (Addison-Wesley, 1964)
Fluid dynamics for physicists, Faber, (Cambridge, 1997)
Physical fluid dynamics, Tritton, (Van Nostrand, 1977)
Video: “The mechanical universe and beyond”
No. 36, Vector fields and hydrodynamics


What do you remember from Physics I ?
(Properties of matter and thermodynamics)
Specific volume
Specific weight
Stress and strain
Young’s modulus
Bulk modulus
Surface tension
Vapour pressure
Thermodynamics: First Law, Second Law, …
Heat capacity
Dimensional analysis.


(The theory of liquids at rest)
A fluid cannot maintain a sheer stress for any length of time.
The measure of ease with which the fluid yields is given by its
It is complicated to include viscosity in our model
→ first ignore viscous effects (frictionless or inviscid flow)
When liquids are at rest there are no shear forces. In a static
fluid the force per unit area across any surface is normal to the
surface and is the same for all orientations of the surface.


Hydrostatistics … 2
The normal force per unit area is the pressure, p.
In a static fluid the pressure must be the same in all directions at
a particular point in the liquid.
The pressure, of course,
surface p = p
may vary from point to
point in the liquid.
For example, in a
p = patm + po − ρ gh
static liquid on
the earth’s surface:
ρ : density (constant)
p = patm + po
patm : atmospheric pressure
po : “gauge” pressure (pressure measured above patm)
“Absolute” pressure = atm pressure + gauge pressure = patm + po 5

Video clip (2.3) A dam wall: For an incompressible fluid at rest the
pressure increases linearly with the fluid depth. As a consequence, large
forces can be developed on plane and curved surfaces in contact with the
fluid. The Hoover Dam, on the Colorado river, is the highest concrete
arch-gravity type of dam in the United States. The water behind Hoover
dam is approximately 220 m deep and ...
Part B:
Introduction to
fluid mechanics
“Fields and fluids”
Andy Buffler
Department of Physics
University of Cape Town
Introduction to fluid mechanics - Trang 2
Để xem tài liệu đầy đủ. Xin vui lòng
Introduction to fluid mechanics - Người đăng: leminhthanhth
5 Tài liệu rất hay! Được đăng lên bởi - 1 giờ trước Đúng là cái mình đang tìm. Rất hay và bổ ích. Cảm ơn bạn!
152 Vietnamese
Introduction to fluid mechanics 9 10 894