The test rig, built in 2016, consists of a horizontal water channel for the investigation of drop breakage during high-pressure homogenization. The investigated multiphase flow consists of a continuous aqueous phase and a disperse oil phase. Different orifice geometries and an adjustable centrifugal pump allow different flow conditions to be generated and investigated both dynamically and stationary in the test rig.

The test stand is characterized by its modular, glass construction with fully optical accessible measurement section and a transparent, interchangeable orifice inserts made of Plexiglas with different geometries. Driven by a centrifugal pump, the continuous phase is permanently recycled and brought to an operating pressure of maximum 8 bar. The orifice plates, in which the flow cross-section is narrowed from 100 mm to 10 mm, produce a strongly accelerated flow with maximum flow velocities of approx. 56 m/s. In the trailing direction of the orifice plate, a free jet is created in a widened channel (diameter: 200 mm). The dispersed phase is introduced in the high pressure section before the orifice plate by means of a syringe pump through a capillary. The primary drops produced are then deformed and broken up by the shredding unit depending on the flow conditions.


Basic data

Dimensions of facility (h/l/d) 2 m / 4 m / 1 m
Dimensions of measurement section (h/l/d) 0,2 m / 1,5 m / 0,2 m
Material glass / plexiglas / stainless steel
Fluid volume  100 l
Inlet channel / high pressure channel diameter 100 mm
Orifice diameter 10 mm
Trailing channel / low pressure channel diameter 200 mm
max. Pressure 8 bar
max. fluid velocity 56 m/s
max. volumetric flow rate 16 m³/h





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