Investigation of cross-sectional changes in laminar, two-dimensional flow; visualisation using electrolytically generated hydrogen bubbles Features - electrolytically generated hydrogen bubbles visualise streamlines - intuitive experiment execution via touch screen (HMI) - integrated router for operation and control via an end device and for screen mirroring on up to 10 end devices: PC, tablet, smartphone - network capability: access to ongoing experiments from external workstations via the local network - automatic identification of accessories via RFID technology Learning objectives/experiments - visualisation of two-dimensional flows - learning the concept of streamlines, flow lines and strike lines - streamline course through an experimental section with changes in cross-section - limits of potential flow -- friction -- flow velocity - software specifically adapted to the accessories used -- learning module with theoretical fundamentals -- device description -- guided experiment preparation -- execution of the experiment -- graphical representation of the experimental section and parameters -- data transfer via USB for versatile external use of measured values and screenshots e.g. evaluation in Excel -- different user levels available Specification [1] electrolytically generated hydrogen bubbles visualise streamlines [2] insertable models generate a change in cross-section in the flow channel [3] low turbulence flow due to honeycomb rectifier [4] bubble generator: platinum wire as cathode and stainless steel plate in the experimental section as anode [5] current for electrolysis and flow rate can be adjusted via HM 250 base module [6] automatic identification of accessories via RFID technology and use of the corresponding software [7] experiment execution and display of the measured values via touch screen (HMI) [8] network capability: access to ongoing experiments and their results from up to 10 external workstations simultaneously via the local network [9] water and power supply via HM 250 base module Technical data Flow channel - depth: 10mm - experimental section WxH: 150x290mm Honeycomb rectifier - material: polycarbonate - shape: tubes Ø 3,5mm 2 symmetrically constructed, insertable models - each model -- LxWxH: 230x37,5x10mm -- angle: 30° Bubble generator - max. current: 300mA - cathode -- material: platinum wire -- Ø 0,2mm - anode -- material: stainless steel plate -- LxWxH: 143,5x13,5x2mm LED lighting - colour temperature: 5500...7000K - luminous flux: 550lm/m Measuring ranges - indicated measuring range flow rate: 0...15L/min LxWxH: 650x260x530mm Weight: approx. 7,8kg
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