• fundamental investigations of fluid flows
• investigation of complex turbulent flows in various industrial processes
• testing of fluid velocity and flow rate measuring devices
• testing of air terminal devices and preparation of technical data catalogues.
• measurements of indoor climate parameters in ventilated and air-conditioned rooms (photos)

Fundamental investigations of fluid flows

1. Investigation of three-dimensional isothermal and heated turbulent jets issuing from nozzles and orifices of various geometry.
2. Coherent structures eduction and mass, momentum and energy transport in turbulent free jets.
3. The influence of polymer additives on drug reduction in channels.
4. Experimental investigation of the solid phase effect on turbulent structure and transport processes in channel flow.
5. Jet systems

Instrumentation

• Close-circuit wind tunnel with open working section (cross-section 750x500 mm, length 800 mm) allows investigations of flows around different bodies. It has low turbulence and uniform velocity distribution in the working section.
• Water channel makes possible measurements of hydraulic drag and investigation of submerged water jets with flow rates up to 5 l/s.
• Two calibration channels for hot wire probes: for velocities in the range 1 to 200 m/s and for velocities below 1 m/s.
• Installations for generation of different types of flows: free air jets of various configurations, coaxial jets, channel flows and flows with sudden expansion.
• Installation for generation of non-isothermal (heated) turbulent jets.
• Test rig for air terminal devices.
• Transducers driving units for calibration and positioning of the probes in the point of measurement.
• Refrigeration installation for control of fluid flow temperature.
• Thermoanemometer DISA 55M (Dantec-Denmark) with two channels, which allows simultaneous measurement of two components of velocity. Velocities greater than 0.3 m/s with frequencies up to 150 kHz in single-phase flows could be measured. One constant current thermoanemometer for temperature measurements in turbulent flows.
• Data acquisition system BE256(Bakker Electronics-Netherlands): two separate channels with programmable input amplifiers in the range 0-20 V, 12bits ADC and 1Mb memory, sampling frequency selectable up to 1 MHz.
• Mobile measurement cart, specially designed for the purpose of field measurements.


• Sensor HT measuring system - temperature and low-velocity measurements in rooms, as well as for flow inside air supply devices. The system consists of hot-sphere type thermal anemometer probe HT-412, transduser unit HT-428-0, 8 channels power supply unit HT-430-5 and connecting cables HT-461 and HT-462.
• Indoor Climate Analyzer
• Computers:
• AMD K6-2 233MHz, 64MB RAM, 5.1 GB
• notebook TP600/60021CE, 350MHz, Pentitum II, 512KB/32MB, 2MB/13??HPA, 3200MB/1.44MB

• Software developed in our group:
• for calibration of hot-wire probes, both single and X-wire;
• phase averaging and coherent structures eduction;
• thermal comfort assesment

• data processing in heated flows using the method of several overheatings of the hot wire
• spectral analysis of hot wire signals;
• HVAC measuring equipment TESTO 450 and TESTO 400
• Velocity tubes: five hole spherical tube, Pitot-static tubes, Pitot tubes for boundary layers.

• supporting any kind of geometry (general nonorthogonal coordinates)
• supporting any kind and shape of furniture in the room
• supporting any kind of heat sources at walls and furniture
• supporting any kind of air supply devices at walls or within the room
• control volumes method
• multigrid acceleration
• different advanced turbulent models (algebraic heat flux models)
• radiation modelling - monte carlo and discrete transfer methods
• developed in cooperation with LSTM, Friedrich-Alexander University of Erlangen-Nuernberg

• local mean age of air (efficient removal of contaminants)
• velocity and temperature fields
• thermal comfort assessment based on international standards
• 3D tracelines of the flow patterns in the room
• distribution of concentration of chemical species and humidity within rooms

• based on specialized software ESP-r developed in ESRU, University of Strathclyde, Glasgow
• building energy management based on integrated simulation
• electrical power reduction
• design support in assessment of how actual weather patterns, occupant interactions, design parameter changes and control systems affect energy requirements and environmental parameters
• cost-effective insulation technology, passive heating and cooling technology, advanced window glazing

• Industrial rooms

Industrial room with accumulator batteries (Geometry)

Industrial room with accumulator batteries (Tracelines)

• Large enclosures

Temperature distribution	Local mean age of air	Local mean age of air	Velocity contours and vectors
Draught rate for plane Z=0.1m	PMV index distribution	PPD index distribution

• Chemical laboratories

Local mean age of air

Flow patterns

• Assessment of turbulent models

Comparison of different turbulent models