[화학공학실험2] LAB1 ReynoldNumber 결과레포트(영문)

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"[화학공학실험2] LAB1 ReynoldNumber 결과레포트(영문)"에 대한 내용입니다.

목차

1. Objective
2. Result
3. Discussion
4. Factors of error
5. Reference
6. Summary

본문내용

1. Objective

1) This experiment is designed to know the relationship between fluid velocity and flow condition.
2) We can understand the role of “Reynolds number” in fluid mechanics.
3) Classify the flow of fluids into three categories and identify each concept.

2. Result
From this experiment, we got the volume, time and temperature of water on each fluid flow and diameter of pipe. We can derive flow rate and velocity from those data, and kinematic viscosity from graph which is kinematic viscosity of water at various temperature. Finally, we can calculate reynolds number.

diameter(m): 2cm = 0.02m
temperature(℃): 13℃
cross-section of pipe(m²): (D²/4)×π = 3.14159×10⁻⁴m²
flow rate(m³/s): volume(m³)/time(s)
velocity(m/s): flow rate(m³/s)/cross-section of pipe(m²)
kinematic viscosity(m²/s) ≃ 1.25×10⁻⁶(m²/s)

Re = (diameter)×(velocity)×(density)/(viscosity), (by using ν=μ/)
= (diameter)×(velocity)/kinematic viscosity

So, we can fill the data sheet and draw a chart which is Reynolds number vs velocity.

참고 자료

SKKU-Chem.Eng.Exp2 p.8 ~ p.14
https://ko.wikipedia.org/wiki/%EC%B8%B5%EB%A5%98
https://en.wikipedia.org/wiki/Laminar%E2%80%93turbulent_transition
https://ko.wikipedia.org/wiki/난류_(역학)