서론
유체 역학은 정역학, 동역학, 열역학 등의 고전 물리 법칙을 적용하는 학문 분야로부터의 시작부터 오늘날에는 유체를 연속적인 매체로 보는 시뮬레이션이 가능한 분야로 발전해왔다. 이러한 적용에서 주로 적용되는 식은 물질수지, 에너지수지, 운동량수지식이라고 볼 수 있으며 각 상황에서 이
여기서 f를 Fanning 마찰계수라 하며, 난류의 연구에서 특히 중요하다.
=
층류흐름에서 마찰계수와 Reynolds 수의 관계는
따라서, 유체의 흐름이 층류일 때는 다음의 Hagen-Poiseuille 식으로도 계산할 수 있다.
난류 유동에 대한 곧은 관에서의 마찰 손실에 관한 주제를 다루는 가운데 Fanning의 마찰인
of products made by sectioning off extrusions. Source: Courtesy of Kaiser Aluminum.
Types of Extrusion
Figure 15.3 Types of extrusion: (a) indirect; (b) hydrostatic; (c) lateral;
Process Variables in Direct Extrusion
Figure 15.4 Process variables in direct extrusion. The die angle, reduction in cross-section, extrusion speed, billet temperature, and lubrication all affect the extrusion pressure.
angling his head to
read the title)
Dear me, arent we in an unfriendly
mood. Caesars conquest of Gaul.
Arent we terribly conscientious
about our studies? By the way, did
the supervisor give you permission
to take that book away from the
school grounds?
NAPOLEON
(quietly)
Fuck off, Bremond.
BREMOND
Oh, my goodness. What language!
Did you learn that from your mother,
Bonaparte?
Bremond is 4 years o
Tomorrow Never Dies
Screenplay
by
Bruce Feirstein
(for educational purposes only)
FADE IN ON:
EXT. DESOLATE MOUNTAIN RANGE - HIGH ANGLE - DAWN
Super: THE KHYBER PASS, AFGHANISTAN
Were looking down at what used to be called "The End of the Known
World." A landscape that is both beautiful, and forbidding.
In the center of this vista, there is a deep ravine.
Pushing in on the ravine, there appears t
ANGLE ON:
The fence. The gate that separates the parents. It bows
toward them like iron filings to a magnet, and several of
the strands of barbed wire have given way.
The boy continues to scream as all the other faces simply
freeze and wonder.
One of the soldiers pulls a wooden baton from his belt
and brains the boy violently.
He slumps and the soldiers carrying him spring forward as
through a ro
LOST IN SPACE
by
Akiva Goldsman
CHAPTER 1: Earth 2058
---------------------
모
FADE IN ON:
EXT.-SPACE
PULL BACK slowly as MARS fills THE FRAME, a sphere of red desert and fast rushing crimson clouds.
A triangular CARGO SHIP descends from the dark of space.
PILOT (OVER)
Mars mining base, this is Grissom One,
Request final descent vector.
REVERSE ANGLE
EXT.-MARS
A row of giant red mountains and b
angles just right.
Course, l wont always be fixin things around here.
One day l will be a full-fledged counselor.
l have learned all the steps in the path of the brave,
l have memorized the handbook,
and l learned the Kikakee sign language.
lf only theyd give a fella a chance.
lm sure they will , Ernest.
Nuh-uh .
But the real reason lm here
is to see if youve gotten all your shots.
[ Chuckles ]
S
< 요약 >
유체를 이동시킬 때 가장 일반적으로 쓰이고 있는 방법은 파이프나 기타의 유로를 통해 유체를 흐르게 하는 것이다. 이러한 방법으로 유체를 이동할 경우, 필수적으로 요구되는 것이 유량측정과 압력강화의 고려 문제이다. 왜냐하면 공업공정 조절에 있어 유체가 파이프 등을 통과할 때 마찰
1)Objective and Motivation
◎Measure the static coefficient of friction and kinetic coefficient of friction in various methode and mass, then compare each others.
◎Find the cause of the errors and discuss how they effected on data.
2)Theoretical Background and method
(1)Friction
The definition of friction is 'The force resisting the relative motion of solid surfaces, fluid layers, and/