Mutiara Nata Abadi  |  We work together, uniting our energy, and delivering the best solution
HM 153 Visualisation of Different Flows
Education / GUNT Hamburg / Fluid Mechanics and Hydrology / Flow around Bodies /

In research and training, flow processes are often considered in simplified models, e.g. in pipe flows, open channel drainage processes or the incident flow of structures.
  HM 153 can be used to visualise flow around bodies, pipe flows and flow phenomena in open channels. Various models are fixed in the flow section. The streamlines are made visible by using injected ink as a contrast medium. The flow section is illuminated from behind and has a transparent front plate. The transition from laminar to turbulent flow and the formation of vortices can be clearly observed.
  Three weirs are available for achieving incident flow. Flow through is shown in two interchangeable models with change in cross section. Streamlines in flow around bodies are demonstrated on four drag bodies.
  A flow straightener ensures consistent and low-turbulence flow. HM 153 includes a closed water circuit. Alternatively, the experimental unit can be operated by the laboratory supply. 
  The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.


Learning Objectives / Experiments

- flow conditions in
  * incident flow of different shaped weirs
  * flow through different shaped models
- streamlines when flowing around different solid

  drag bodies


[1] experimental unit for visualisation of various flow processes 
[2] illuminated flow section with transparent front panel
[3] incident flow demonstrated on three weirs
[4] flow through demonstrated with two differently shaped models
[5] flow around solid bodies demonstrated on four drag bodies
[6] contrast medium: ink
[7] optional operation via laboratory supply or as closed water circuit


Technical Data

Flow section: approx. 5L
Contrast medium: ink
Injection of the contrast medium
- 5 nozzles
- flow rate: 10L/min
- head: 5,7m
- broad-crested

- sharp-crested
- free overfall
Drag body
- 2 cylinder cross sections
- aerofoil, symmetrical
- aerofoil, asymmetrical 
Models (different shapes)
- gradual contraction/enlargement

- tube bundle


Dimensions and Weight
LxWxH: 1.000x310x540mm
Weight: approx. 19kg
Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase
Water connection, drain
Scope of Delivery
1 experimental unit
1 set of weirs, drag bodies and models
Ink, 30ml
1 set of instructional material
Order Details

070.15300  HM 153  Visualisation of Different Flows