AFF173 Open Channel and Closed Channel Flow Fluids Engineering Training Equipment Didactic Equipment Vocational Training Equipment1. Equipment Introduction
1.1 Overview
Open channel and closed channel flow are used to demonstrate different flow processes under different control structures in open channels. The equipment includes:
(1) Transparent experimental flume with upper limit;
(2) Height-adjustable threshold;
(3) Adjustable plate weir
(4) Closed water circulation system.
For experiments, weirs are connected to the bottom of the channel or height-adjustable thresholds are used. In addition, discharge under the gate can be demonstrated. Various weirs can be quickly and safely replaced and can be used as control structures. The adjustable plate weir only needs to be modified to make the experimental flume as an open or closed channel. When studying closed channels, the water level needs to be high enough so that the entire experimental section flows through. In this case, the threshold is used to change the cross-section of the flow. The static pressure and total pressure on the cross-section are detected by measuring tubes, and the pressure difference is used to calculate the flow rate.
1.2 Features
(1) The sheet metal frame structure is adopted, the equipment layout is reasonable and beautiful, and it has a good safety protection system.
(2) The device can be used to study the flow process in open channels.
(3) The device can be used to study the flow process of pipes in gates, thresholds, various weirs, and closed channels.
(4) The device has a closed water circulation system with a water tank and a water pump.
2. Technical parameters
(1) Input power: single-phase AC 220V
(2) Weight: 207kg
(3) Dimensions: 1980mm*880mm*1600mmm
(4) Ambient temperature: 10℃～30℃
(5) Relative humidity: <75% (25℃)
3. Component list
3.1 main part
|
No.
|
Name
|
|
1
|
Sheet metal frame
|
|
2
|
Power switch cabinet
|
|
3
|
Water supply tank
|
|
4
|
Gate
|
|
5
|
Experimental water tank
|
|
6
|
Upper limit plate
|
|
7
|
Weir
|
|
8
|
Drainage tank
|
|
9
|
Threshold height adjuster
|
|
10
|
Water supply tank
|
|
11
|
Drain port
|
|
12
|
Ball valve
|
|
13
|
Measuring tank
|
3.2 power switch cabinet
|
No.
|
Name
|
|
1
|
Main voltage switch
|
|
2
|
Pump switch
|
|
3
|
Power indicator
|
|
4
|
Operation indicator
|
3.3 Accessories
|
No.
|
Name
|
|
1
|
Wide crested weir
|
|
2
|
Crown Weir
|
4. Experiment List
Experiment 1: Introduction to open channel and closed channel flow
Experiment 2: Experiment on the influence of control structures (various weirs, thresholds) on water flow in open channels
Experiment 3: Experiment on discharge under gates in open channels
Experiment 4: Experiment on hydraulic jump in open channels
Experiment 5: Experiment on uniform and non-uniform discharge in open channels
Experiment 6: Experiment on sediment transport in open channels
Experiment 7: Experiment on measurement of static and total pressure in closed channels
Experiment 8: Experiment on flow in closed channels with constant and variable flow cross sections
Experiment 9: Experiment on calculation of flow velocity in closed channels
