Top-Rated Free Essay

# D Expt 1 Determination of Reynolds Numb

Satisfactory Essays
1777 Words
Grammar
Plagiarism
Writing
Score
D Expt 1 Determination of Reynolds Numb
XAVIER UNIVERSITY – ATENEO DE CAGAYAN
COLLEGE OF ENGINEERING

ACTIVITY NO. 3
DETERMINATION OF REYNOLDS NUMBER

Date Performed: December 09, 2014

ChE 34 A: UNIT OPERATIONS LAB

Submitted by:
Ephrem John O. Agorob

201030788

Jill Carlotha P. Cajote

201030149

Jacqueline Faye D. Lim

201030739

Melody Kimberly D. Pitoc

201014465

Instructor:
Engr. Edwin Richard R. Ortiz

Date Submitted: December 16, 2014

1

REYNOLDS NUMBER

Experiment 3

ABSTRACT: The experiment focuses on types of flow of liquids. It aims to classify if the flow of is either laminar or turbulent. Reynolds number is a dimensionless quantity that gives the ratio of kinetic or inertial forces to viscous force in the fluid condition. The bigger the Reynolds number the more orderly is the flow of the fluid molecules. The experiment uses a small stream entering dye with flowing water to observe its behavior through the glass pipe. The observation of the dye behavior will be supported by the Reynolds number calculation. The manipulated parameter is the opening of the outflow valve, having an opening of 1 revolution, 2 revolutions, 4 revolutions and6 revolutions (maximum opening)and computed Reynolds number of 3823.79, 11659.14, 14733.30 and 21185.65 respectively. Based from the results, as the opening of the outflow valve increases the velocity of water increases with its volumetric flow rate and Reynolds number. Theoretically, the obtained trend is correct because velocity is directly proportional to Reynolds number.

KEYWORDS: Reynolds number, laminar, turbulent
INTRODUCTION:

The type of flow occurring in a channel is important in fluid dynamics situational problems.
When fluids move through a closed channel of any cross section, the flow may become laminar or turbulent. Generally, when the velocity of flow is slow, the patterns are smooth. However, when the velocity is quite high, an unstable pattern is observed (Geankoplis, 2003). In determining whether the flow of fluid in the pipe will become laminar or turbulent, Reynolds number(

Cited: Geankoplis, C. J. (2003). Principles of Transport Processes and Separation Processes, 4th Falkovich, G. (2011). Fluid Mechanics. Cambridge University Press.(retrieved on December 12, 2014) Singh, S. (retrieved on December 12, 2014).

## You May Also Find These Documents Helpful

• Satisfactory Essays

Procedure: In the experiment, I use devices such as a ruler, beakers, flasks, a scale and cylinders to measure the values of each object and liquid.…

• 942 Words
• 9 Pages
Satisfactory Essays
• Good Essays

Think back to the key question. List two different fluids. How are their flow rates…

• 667 Words
• 3 Pages
Good Essays
• Powerful Essays

Before we conduct the experiment, we must first understand what viscosity is. “Viscosity is the quantity that describes a fluid's resistance to flow”.1 It is essentially fluid friction and transforms kinetic energy of motion into heat energy, just as friction (“the force between surfaces in contact that resists their relative tangential motion”) does between two solid bodies. All fluids express some amount of viscosity. An ideal fluid has no internal friction between the molecules, meaning that it is not viscous. The reciprocal of viscosity is fluidity (“the physical property of a substance that enables it to flow.”)2 Thus, fluids that are high in viscosity tend to flow slower while fluids that are low in viscosity tend to flow faster. Different liquids have different forces: the larger the intermolecular force, the more viscous it is and vice versa.…

• 1599 Words
• 7 Pages
Powerful Essays
• Satisfactory Essays

Predict Question 1: You will now test three mechanisms to compensate for the decrease in flow rate caused by the…

• 555 Words
• 6 Pages
Satisfactory Essays
• Satisfactory Essays

Introduction: The purpose of experiment 1 was to demonstrate the principle of simple diffusion and understand how to make % solutions. Exercise 2 demonstrated the principle of osmosis: observing the movement of water by osmosis from an area of lower concentration of a solute to an area of higher concentration of a solute.…

• 267 Words
• 2 Pages
Satisfactory Essays
• Good Essays

The slope of the inflow hydrograph can be seen to decrease linearly with time from the…

• 1215 Words
• 35 Pages
Good Essays
• Good Essays

where η is viscosity, r is the radius of the sphere, and v is the relative speed of the sphere…

• 858 Words
• 4 Pages
Good Essays
• Powerful Essays

This course of 15 lectures provides an introduction to open channel hydraulics, the generic name for…

• 26806 Words
• 108 Pages
Powerful Essays
• Powerful Essays

In this experiment length, flow rate, and resistance was measured and the true mean was…

• 2351 Words
• 23 Pages
Powerful Essays
• Satisfactory Essays

1. What happened to the fluid flow rate as the radius of the flow tube was increased?…

• 818 Words
• 4 Pages
Satisfactory Essays
• Good Essays

The experimental apparatus is a set of 2 fluid reservoirs connected by a “blood vessel”. It is…

• 647 Words
• 5 Pages
Good Essays
• Powerful Essays

In this investigation, I will be monitoring the effect sugar concentration has on the movement of water.…

• 1599 Words
• 7 Pages
Powerful Essays
• Good Essays

Freezing fouling may occur at rest, such as in a reservoir, or under conditions of high shear rate and large temperature gradients,…

• 11173 Words
• 45 Pages
Good Essays
• Good Essays

The object of this lab is to become familiar with writing scientific reports. In doing so, SLIME is prepared along with examining the results and investigating the “non-Newtonian fluid” properties.…

• 630 Words
• 3 Pages
Good Essays
• Satisfactory Essays

A fluid is a body of matter that can flow; i.e. continues to deform under a shearing force.…

• 5253 Words
• 22 Pages
Satisfactory Essays