Visualisation of Seepage Flows Educational Equipment Vocational Training Hydraulic Bench

AFF121 Visualisation of Seepage Flows Educational Equipment Vocational Training Hydraulic Bench
A descriptive method in the study of seepage and groundwater flow is the visualisation of the streamlines and their graphical representation as a flow net. The flow net provides information about the seepage of water in dams and sheet piles.
It can be used to visualise streamlines in seepage and groundwater flow on different models using a contrast medium. Furthermore, the effects of water pressure on different structures are displayed as pressure curves.
The trainer consists of a transparent tank with a sand filling. Various models can be placed in the sand bed to demonstrate typical structures. The experimental section is separated from the feed and discharge chambers by fine mesh screens. A valve is used to adjust the water supply. Using a contrast medium it is possible to make streamlines visible, as they occur in seepage and groundwater flow. A tempered glass viewing window allows for optimal observation of the experiments.
Various models allow an extensive range of experiments, such as pressure distribution on retaining walls or seepage and groundwater flow under sheet piles. The “foundation” and “retaining wall” models are equipped with tubes to show the pressures on the models.
In the experimental section there are measuring connections to detect groundwater levels. Groundwater levels are displayed on 14 tube manometers.
It contains a closed water circuit with storage tank and pump.

Specification
visualisation of two-dimensional seepage flows and investigation of water pressure at various models
closed water circuit
fluoresceine as a contrast medium
experimental section with tempered glass viewing window
fine-mesh screen to separate the experimental section from the feed and discharge chamber
height-adjustable overflows in the feed and discharge to adjust the water levels
14 measuring connections with filters to detect the groundwater levels in the experimental section
“sheet pile” model for visualisation of streamlines
“retaining wall” and “foundation” models for demonstration of the water pressure
instruments: tube manometers, tubes on the “foundation” and “retaining wall” models

Technical data
Experimental section
usable volume: 82L
LxWxH: 1480x104x630mm
Pump
max. flow rate: 4m3/h
max. head: 4m
14 tube manometers: 0…600mmWC
Tank for contrast medium: content 0,5L
Storage tank, stainless steel: content 96L

Models
“sheet pile”
“retaining wall”
“foundation”
230V, 50Hz, 1 phase
230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase
Dimensions and weight
LxWxH: 1900x800x1870mm
Weight: approx. 230kg
Required for operation
sand (1…2mm grain size)