StudentShare solutions
Triangle menu

Open Channel Flow - Lab Report Example

Free

Extract of sample
Open Channel Flow

Steady flow refers to a flow whereby the amount of water entering the channel is equivalent to the amount of water leaving the channel. Steady flow is divided into two classes, uniform steady flow and non-uniform steady flow. For steady flow to be classified as non – uniform steady flow, the average velocities of the flowing fluid in in successful cross sections of the open channel must be the same. This depend on the cross section of the channel. For steady uniform flow to occur, the cross sectional are must be constant. When the there is a sudden change in the layout of the open channel such as constriction, changes in cross sectional are among others, the flow may gradual or suddenly change. This is non – uniform flow. Non – uniform flows occurs is divided into two classes, gradually varied flows, which occurs in when the change in surface are is small, and rapidly varied flow, which occurs when the change in cross sectional are is large. In most calculation, the flow is assumed to be uniform to determine the properties of the flow. This flow can be represented using several equations. These equations are the manning’s equation, Chezy’s Equation and Darcy – Weiberschh equation. The equations are as listed below respectively. Using the above listed equations, either singly or in combination, flow properties of any channel can be determined. The laboratory project was mainly done to enable observation of flow characteristics of an open channel, using different equations, which include

Related Essays

Relationship between flow, Precipitation and turbidity, for the Red Cedar River
Discharge, on the other hand, is a terminology that refers to the rate of flow of a volume of water, including dissolved chemical species, any suspended solids that are transported through any given cross-sectional area. This experiment deals with how turgidity, flow or discharge and precipitation of the red Cedar River are related.
3 pages (750 words) Lab Report
Current flow in a circuit (purely resistive and restive-capacitive
The current may cause effects such as heating or even induce magnetic fields preferably used for generators, motors and inductors. Current generally flows from the positive terminal towards the negative terminal of battery and there is voltage drop across the electrical elements in the circuit due to resistance, reactance or inductance.
4 pages (1000 words) Lab Report
Immunology - Flow Cytometry and ELISA
Flow Cytometry is a technique with automatic sorting devices that is able to sort successive streams of droplets into various fractions based on the type of fluorescence emitted by the droplet (Lee et al,1999).In this experiment, sandwich ELISA and Cytometry were employed; For sandwich ELISA, it was used to measures the antigen quantity between two antibody layers.
13 pages (3250 words) Lab Report
Logic gates characteristics
0/1, low/high, or false/true. In the TTL family of digital electronics, voltages in the range of 0 – 0.7 V are logic 0 and voltages in the range of 2.5 – 5 V represent logic 1. Most logic operations are implemented using AND and OR gates. The inverted logic AND and OR are known as NAND and NOR gates.
5 pages (1250 words) Lab Report
Impact of Flow Rate on Water Quality of the River Yare
Since the accumulation of organic matter is inversely proportional to the flow rate velocity of the water, this study will analyse and compare samples from two distinct flow rate areas. River conservation efforts of the past several decades have been aimed at reducing nutrient enrichment from fertilizers and sewage.
5 pages (1250 words) Lab Report
Environmental fluid mechanicsopen channel flow lab report
5 pages (1250 words) Lab Report
Digital multi-channel communication system
e of the most reliable technology through which information is relayed .Satellites dole out elementarily for map-reading, connections, backdrop scrutiny as well as climate forecasting. The launching of the Satellite Sputnik altered the course of the Russian history in 1957 when
10 pages (2500 words) Lab Report
Hydrolics
After the installation of pressure taps discharge and pressure data was noted. Results obtained from different spillways were used to plot
6 pages (1500 words) Lab Report
Flow Measurement Using Venturi Meter
This means that it encompasses the actual experimental set-up, the used apparatus, the achieved results, the theoretical framework of this concept, the analysis and discussion of the attained
9 pages (2250 words) Lab Report
OpenChannel Flow
Equal values of average velocities of fluid in subsequent cross-sections imply a uniform flow in the channel. An alteration of channel depths and velocities affects the steadiness of the fluid flow. Beta (2006) states that a surface parallel to the
1 pages (250 words) Lab Report
the manning’s equation, Chezy’s Equation and Darcy – Welbersch Equation. Using this equations, different friction factors of channels were determined. Methodology The datum for the vernier scale was first set as the datum surface. The Rota meter was then used to calculate the flow rate. The flow rate was then reified using the bucket and the stop watch methods. The depth of the over the smooth channel and each of the rough channel was measured and recorded. The length and the width of the channel was also measured and recorded. The bottom and top depth of each channel was measured and recorded. Results       Position 1 Position 1 Position 2 Position 2 Position 3 Position 3 Position 4 Position 4 Position 5 Position 5 Group 7 Slope (%) Flow Gauge Q (L/sec) Datum Elevation (mm) Water Surface Elevation (mm) Datum Elevation (mm) Water Surface Elevation (mm) Datum Elevation (mm) Water Surface Elevation (mm) Datum Elevation (mm) Water Surface Elevation (mm) Datum Elevation (mm) Water Surface Elevation (mm) Trial 1 0.7   0 33.8 0 32.8 0 32.2   34.1 0 12.3 A 0 2575.56 0 2499.36 0 2453.64 0 2598.42 0 937.26 P 76.2 143.8 76.2 141.8 76.2 140.6 76.2 144.4 76.2 100.8 R 0 17.91070932 0 17.62595205 0 17.4512091 0 17.99459834 0 9.298214286 V 0 155.3060305 0 160.0409705 0 163.0231004 0 153.9397018 0 426.7759213 Q(mm3/s) 400000 S 0.007 n 0.003691364 0.003544065 0.003456189 0.003735753 0.000867504 f 0.000120008 0.000114225 0.000110817 0.000121768 2.45927E-05 C 808.6760981 828.895375 841.543901 802.8098806 1786.391685 Mean 0.000098 STDV 0.000041 The data was recorded in the attached excel files Discussion Velocity of flow is usually given as Thus to determine the manning’s, n, N in the equation ids made the subject t of the equation as below. Where R is the Hydraulic Radius. The hydraulic radius is given by the quotient of area and wetted perimeter like in equation below, A is the are given by the Depth multiplied by the channel

Summary

Date Open Channel flow Introduction Open Channel flow refers to fluid flow that is exposed to atmospheric pressure. Examples of open channel flow include Half Full Culverts, streams, rivers, etc. In open channel flow, the pressure on the surface of the flow is assumed to be constant…
Author : casandralowe
Open Channel Flow essay example
Read Text Preview
Comments (0)
Rate this paper:
Thank you! Your comment has been sent and will be posted after moderation