Русский
NTC-11.90 “Open-channel hydraulics”
Br0.00
The educational laboratory stand is designed for carrying out laboratory works in “Hydraulics”, “Fluid mechanics”, “Water supply and sewerage”, “Hydrology and hydrometry” and others at universities and secondary educational institutions.
The stand contains:
- two framework constructions FC1 and FC2;
- a pump unit;
- a rectangular flume;
- adjusting and connecting accessories;
- data & measurement system.
A hydraulic tank and a pump monoblock unit containing a centrifugal pump and a three-phase electric motor are installed on FC1. The frontal part of a slume is fixed on the hydraulic tank with swivel joints (possible to turn). The opposite part of a slume stands on FC2, which contains a special hydraulic drive with a hydrocylinder and a manual pump providing the slume’s turn around the joints fixed on the hydraulic tank. It allows varying inclination of the slume bottom steplessly. The output of the centrifugal pump is connected to the slume with elastic piping.
The longitudinal walls of the slume are made of transparent material. One of these walls has a coordinate grid plotted on X and Y axes on the frontal side of the stand. The stand contains a set of wall devices for installation into the slume (weirs, gate).
The data & measurement system of the stand allows measuring local longitudinal velocities and flow rate of the water which comes into the slume, coordinates of free surface of a fluid flow.
The stand is accompanied with a set of teaching materials and technical documentation intended for the teaching staff.
Experiments provided
- Measurement and distribution of longitudinal velocities in the cross section of an open flow. Determination of the Coriolis and Boussinesq coefficients.
- Determination of the roughness factor in the channel.
- Investigation of liquid outflow from the hole of a circular non-flooded weir.
- Determination of the throughput capacity of various types of weirs: weir with a thin wall, weir with a thin wall and lateral compression, weir with a wide sill, triangular weir, weir with a practical profile wall.
- Researching the perfect hydraulic jump.
- Determination of the dependence of the depth of a uniform flow on the slope of the bottom.
- Studying the free surfaces curves of gravity flow.
- Determination of resistance when flowing around bodies of different profiles (three bodies: ball, cone, cylinder).
Technical specifications
| Power supply | 3~380/220V 50Hz | |
| Power consumption, kW, max | 2,2 | |
| Carrying fluid: | water | |
| Hydraulic tank volume, m3 | 0,7 | |
| Flow rate adjustment range, l/s | 0…15 | |
| Overall dimensions, max: | ||
| Length, mm | 4600 | |
| Height, mm | 1800 | |
| Depth, mm | 1000 | |
| Slume dimensions, max: | ||
| Length, mm | 4400 | |
| Section dimensions, m | 0,25х0,4 | |
| Bottom inclination range, degree | 0…10 | |
| Weight, kg, max | 280 | |
Video
Scope of delivery
- training system – 1 pc.;
- passport – 1 pc.;
- supplementary materials in electronic format – 1 pc.