1. 실험 목적
레이놀즈 실험장치를 사용하여 층류와 난류의 상태를 관찰
수온, 유량 및 유속을 측정하여 흐름의 상태와 레이놀즈 수의 관계를 이해
2. 이론&배경
1) 유체의 흐름
층류(Laminar flow)
유체의 질서 있는 흐름
전이영역(Transition)
층류와 난류 사이의 영역
난류(Turbulent flow)
유체의 무질
Investigate the relationship
between flow condition and
fluid velocity in order to
understand Reynolds
number in flow dynamics
A. Shear Stress
B. Viscous & Inertia Force
C. Reynolds Number
D. Laminar & Turbulent Flow
E. Type of flow
Shear stress slow down the motion so that the velocity close to the wall will reduce
→ velocity gradient (dy/dx)
A dimensionless number is a quantity which describes a
Certain physical system and which is a pure number without
Any physical units
The fluid undergoes irregular fluctuations, or mixing, in
Contrast to laminar flow, in which the fluid moves in smooth
Paths or layers
In turbulent flow the flow the speed of the fluid at a point is continuously undergoing changes in both magnitude and di
Blackness. Then a hint of green becomes EARTH. It lies across an expanse of space. Richly colored. Fertile.
A GIGANTIC ASTEROID cuts into frame, Burning into EARTHS ATMOSPHERE and striking down in the currant area of Guzumel, Mexico.
Voice : An impact equivalent to ten thousand nuclear weapons detonating simultaneously.
A HUGE DINOSAUR FOOT steps down hard and is VAPORIZED with a deafening ROAR.
Friday the 13th, Part 6: Jason Lives
FADE IN:
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A NIGHT SKY
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Ominous black clouds roll across the heavens. THUNDER begins
to RUMBLE within the clouds. An unsettling feeling of
approaching danger.
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VARIOUS FOREST SHOTS
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Deep shadowed woods. A quiet breeze rustles some dry leaves.
NOISY CRICKETS. Some unseen creature runs through the bush.
THE CRICKETS STOP.
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EXT. FOREST ROAD - NIGHT
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A