Fluid mechanics > Tilting flow channels





The channel is designed for studying the sediment transport and bed forms as well as flow phenomena without sediment. 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 less 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 support at both upstream and downstream ends for a total of 3 supports.

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 when used as a normal tilting flow channel. These holes can also be used for pressure tapping points to measure pressure loss along the channel length.

Side Walls

For safety reasons, the side walls are made of tempered glass. 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 also provided in the head tank to further smoothen the flow.

Sediment Feeder

The channel bed may be filled by a sediment feeder with a slope stopper upstream and another one just before sediment trap at the downstream end of the channel. Feeding is by a screw.

Sediment Trap

A Sediment trap is provided at the downstream end of the channel. The trapped sediment can be discharged by

 a bottom value. The trap is covered when used as a normal flow channel.

Storage Tank

An underground concrete storage tank is recommended as standard. This tank is to be built by the user. However, above ground tank is available (optional).


A steel walkway with a checker plate floor and side rails is provided on both side of the flume for ease of model installation and flow observations.

Circulating Pump

The pump is ceramic coated to minimize wear by sediment abrasion. A mechanical seal is used. A geared butterfly valve is provided to control accurate rate of flow.

Flow measurement

A flow digital display is used. In the case of an underground storage tank, a measuring tank with a calibrated weir is available as an option. The flow rate is controlled by a geared butterfly valve.

Model and Accessories

In the case of no sediment, the channel may be used as a normal tilting flow channel. All accessories and models have side seals to ensure no water seep or leak through the sides of the models. A wide variety of models and accessories are available as an option.

As Sediment Channel:  

  • Fixed smooth bed flow
  • Flow over mobile sand bed
  • Flow structures
  • Local scour
  • Mechanics of sediment transport
  • Bed form hysteresis
  • Depositionary features and fancies
  • Computational work
  • Flow over fixed gravel bed


As Tilting Flow Channel:

  • Flow measurement
  • Hydraulic jump
  • Analysis of model structures
  • Gauging structures
  • Velocity profile
  • Continuity and energy equations
  • Similarity laws
  • Roughened bed characteristics
  • Surge propagation
  • Channel size
: 600 mm wide, 700 mm high   
  • Channel length
: 18 m (12 m length can be supplied on request)   
  • Total length
:  Additional length 3 m for head and storage tanks.   
  • Tilting adjustment
: -0.5 to +2%   
  • Side walls
: Tempered glass   
  • Channel bed
:  Stainless steel   
  • Sediment feeder     
:  Motorized   
  • Sediment trap         

:  Stainless steel with cover and sediment recovery system

  • Water storage tank

:  Underground tank to be provided by user. Aboveground tank is optional

  • Head tank
:  Stainless steel   
  • Sluice gate
:  Stainless steel, rack and pinion type, built-in at downstream end of flume   
  • Pump      
:  1   
  • Flow measurement
:  Flow digital display   
  • Instrument trolley
:  Manual operated   
  • Power supply
:  380 V, 3 Ph, 50 Hz. Other power supply is available on request.   
  • Shipping Dimensions: One 40 ft. container (without storage tank)
  • HF566S                               

Learning Software

to support both online/offline training with data calculation and analysis by manual data entry from analog measuring instruments.

  • HF560-001A
Motorized instrument trolley instead of manual operated trolley
  • HF560-002
Above ground storage tank, fiber glass or stainless steel, with lids

As A Sediment Flow Channel:

  • HF566-010                
Sediment drying oven.                                                                                                                              

As A Tilting Flow Channel:

  • HF566-017
Flow calibration tank
  • HF566-019
Stainless steel vernier hook and point gauge with vertical and horizontal movement
  • HF566-020
Basic weir plate with stainless steel 60˚ V notch and rectangular notch weir attachment.
  • HF566-022
Sharp crested weir
  • HF566-023
Broad crested weir, sharp edges
  • HF566-023A
Round edge attachment for HF560-023
  • HF566-024
Crump weir
  • HF566-025
Trapezoidal weir
  • HF566-030                      
Ogee weir with consisting of base profile unit both upstream and downstream pressure tappings and manometer board
  • HF566-031
Dam spillway consisting of base profile unit with different interchangeable downstream sections:
 - Toe, ski jump, piers and pegs, gravel box, or stop logs
  • HF566-032
USBR type 2,3 or 4 energy dissipater
  • HF566-033
Syphon spillway
  • HF566-034
Bridge pier, round or square edge
  • HF566-035
Culvert fittings, round or square, horizontal or drop inlet with or without entrance flare
  • HF566-036
Vibration pile
  • HF566-040
Venturi flume
  • HF566-041
Parshall flume
  • HF566-042
Submerged orifice made from stainless steel on plastics
  • HF566-050
Sluice gate, rack and pinion drive with stainless steel attachment
  • HF566-052
Radial gate, rack and pinion drive with stainless steel attachment
  • HF566-060
Pitot tube with manometer board for measurement of flow velocity and various channel sections
  • HF566-061
Current meter
  • HF566-065
Lift and drag balance and models, large and small cylinders and aerofoil section
  • HF566-070
Roughened bed, gravel, sand, or corrugated
  • HF566-075R
Sediment transport study system with sediment recirculating system


In this case, pump will be cover with ceramic for corrosion prevention.
  • HF566-080
Wave generator with variable speed geared motor
  • HF566-080F
Full randomly wave generator


This include HF560-082 and HF560-080M.
  • HF566-080M
Wave measuring system
  • HF566-082
Absorbing beach, plain, roughened, or permeable
  • HF566-085
End tank, stainless steel, at downstream end of flume
  • Other accessories and models can be supplied on request.
  • Other optional equipment, please contact manufacturer ([email protected])
  • HF566S                        
: Learning Software to support both online/offline training with data calculation and analysis by manual data entry from analog measuring instruments.