The channel is designed for studying the hydraulic flow phenomena. It is a service unit to be used with optional accessories and models. Instruction manual is also included.
Under Frame
The channel bed rests on twin I-beam under frame which ensures static loading deflections are kept to a minimum. The length of the I-beam is about 6 m. Each section is shipped with glass side walls. This simplifies site installation as there are only two joints and is easier to ensure straight side walls throughout the length. To ensure minimum deflection, the I beam base frame of 18 m. is supported by a fulcrum at the middle and adjustable height supports of both up stream and down stream ends for a total of 3 supports. The number of supports is 5 for 30 m channel length.
Slope Adjustment
Each adjustable height support uses twin screws and with a system of worm and wheel gear boxes and miter gears which are intern driven by a motor. A slope scale is provided at one end of the flume.
Channel Bed
The channel bed is made of stainless steel with twin screw holes of equal distance along the channel length to hold accessories or models to the flume bed. These holes can also be used for pressure tapping to measure pressure loss along the channel length.
Side Walls
For safety reasons, the side walls are made of tempered glass or clear acrylic. The walls are supported at interval by brackets with screws for vertical position adjustment.
Instrument Carriage
Top rails made of stainless steel tubes are attached to the top angle on each wall of the channel. Screws supporting the rails can be adjusted to ensure uniform height and in a straight line. A scale graduated in mm. is attached along the full length of one top angle of the walls. The instrument carriage is manually operated.
Head Tank
The head tank is made of stainless steel and its sides and bottom are curved to ensure smooth flow into the channel. Perforated plates are provided in the head tank to further smoothen the flow.
Storage Tank
An underground concrete storage tank is recommended as standard. This tank is to be built by the user. However, above ground storage tank is available at additional cost.
Walkway
A steel walkway with a checker plate floor and side rail is provided on one side of the flume for ease of model installation and flow observations.
Circulating Pump
The pump seal is mechanical. A geared butterfly valve is provided to control an accurate flow rate.
Flow measurement
A flow digital display is used. In the case of an underground storage tank, a measuring tank with calibrated weir is available as an option. The flow rate is controlled by a geared butterfly valve.
Model and Accessories
All accessories and models have side seals to ensure no water seepage or leakage through the sides of the models. A wide variety of models and accessories are available as option.
- Flow measurement.
- Hydraulic jump.
- Analysis of model structures.
- Gauging structures.
- Velocity profile.
- Continuity and energy equations.
- Similarity laws.
- Roughened bed characteristics.
- Surge propagation.
- Wave generation and absorption.
| Channel cross section | 600 mm wide, 700 mm high |
| Channel length | 18 m (Optional 12 m) |
| Tilting adjustment | -0.5 to +2% |
| Side walls | Tempered glass |
| Channel bed | Stainless steel |
| Sluice gate | Stainless steel, rack and pinion type, built-in at downstream end of flume |
| Flow measurement | Flow digital display |
| Power supply | 380 V, 3 Ph, 50 Hz Other power supply is available on request. |
| Part No. | Part Name |
|---|---|
| HF 560-017 | Flow calibration tank consisting of two sections where water is discharged into the first section and flows through stilling partition before discharging via calibrated weir into underground tank. |
| HF 560-019 | Stainless steel vernier hook and point gauge 0-750 mm with 0.05 mm reading or 1 mm graduation |
| HF 560-020 | Basic weir plate with stainless steel 60˚V notch and rectangular notch weir attachment |
| HF 560-022 | Sharp crested weir |
| HF 560-023 | Broad crested weir sharp edges |
| HF 560-023A | Round edge attachment for HF560-023 |
| HF 560-024 | Crump weir |
| HF 560-025 | Trapezoidal weir |
| HF 560-030 | Ogee weir consisting of base profile unit with both upstream and downstream pressure tappings and manometer board |
| HF 560-031 | Dam spillway consisting of base profile unit with different interchangeable downstream sections: - Toe ski jump piers and pegs gravel box or stop logs. |
| HF 560-032 | USBR type 23 or 4 energy dissipater. |
| HF 560-033 | Syphon spillway made from clear acrylic and PVC. |
| HF 560-034 | Bridge pier round or square edge |
| HF 560-035 | Culvert fittings round or square horizontal or drop inlet with or without entrance flare Tube is made from clear acrylic |
| HF 560-036 | Vibration pile |
| HF 560-040 | Venturi flume made from clear acrylic with stainless steel attachment. |
| HF 560-041 | Parshall flume made from clear acrylic with stainless steel attachment. |
| HF 560-042 | Submerged orifice made from stainless steel on plastics. |
| HF 560-050 | Sluice gate rack and pinion drive with stainless steel attachment |
| HF 560-052 | Radial gate rack and pinion drive with stainless steel attachment. |
| HF 560-060 | Pitot tube with manometer board for measurement of flow velocity and various channel sections. |
| HF 560-061 | Current meter |
| HF 560-065 | Lift and drag balance and models large and small cylinders and aerofoil section. |
| HF 560-070 | Roughened bed gravel sand or corrugated |
| HF 560-080 | Wave generator with 3HP variable speed geared motor |
| HF 560-082 | Absorbing beach plain roughened or permeable. |
| HF 560-085 | End tank stainless steel at downstream end of flume. |
| Other accessories and models can be supplied on request. | |
| Other optional equipment please contact manufacturer (essom@essom.com) | |
| Shipping Dimensions | One 40 ft. container (without storage tank) |