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Measurement technologies

Application of various active and passive optical measurement methods through to laser spectroscopic measurement methods for analysing sprays, flows and combustion diagnostics.

The institute has many years of experience and expertise in the field of experimental methods, measurement techniques and flow measurements (liquid and gaseous; laminar/turbulent). Flow, temperature and pressure are measured, analysed and optimised. In addition, measurements are carried out on sprays and droplets (droplet sizes, distribution and velocities). In the field of combustion research, expertise lies in the diagnosis of combustion processes. Experimental questions can be investigated through the development of test benches, the use of suitable measurement technology and the analysis of measurement data.

Optical measurement technology at the FHNW Institute of Thermal and Fluid Engineering

Our optical measurement technology enables the visualisation and investigation of flows, sprays and temperature distributions. Quantitative measurements can often only be achieved optically without influencing the boundary conditions or the application itself. The experimental data is often used to further analyse the processes as a basis for validating simulations.

  • Various high-speed cameras in the infrared range are used with different measurement methods for optical analyses.
  • Expertise in the field of optical analysis using high-speed cameras includes shadow imaging, schlieren, BOS, IR measurements, PDA/LDA, PIV and other methods.
  • Thermal cameras and heat flow sensors are used to dynamically analyse heat transitions and thermal effects.

An important part of combustion process development is the analysis of combustion processes by means of indexing. In addition to imaging methods, sensors for pressure indexing and heat release are also being investigated and further developed. The issues are often so complex that conventional measurement methods cannot provide sufficient answers. We are therefore also developing new approaches in measurement technology to obtain the desired results.

Contact and cooperation

We look forward to putting our constantly advancing measurement expertise to work for you. If you have any questions or are interested, please contact us.

Reference projects

Temperature and layer wear measurement for turbine blades

New methods for the in-situ measurement of surface temperature and coating wear in a test rig for rotating turbine blades.

to Temperature and layer wear measurement for turbine blades

Advanced optical diagnostics for combustion development at large two-stroke engines

The Combustion Analysis Tool (CAT) project is dedicated to the development of an innovative optical diagnostic method.

to Advanced optical diagnostics for combustion development at large two-stroke engines

Investigation of the piston running properties of large 2-stroke marine diesel engines and analysis of future lubricant concepts

An innovative ultrasonic reflectometry process is used to measure the oil film thickness and optimize lubrication strategies to minimize oil consumption.

to Investigation of the piston running properties of large 2-stroke marine diesel engines and analysis of future lubricant concepts

Optimisation of sonic toothbrushes to reduce oral biofilm through shear forces (STOP Biofilm)

The effect of a sonic toothbrush on the cleaning of interdental spaces was investigated and the shear stress during cleaning in the tooth gap was optimized.

to Optimisation of sonic toothbrushes to reduce oral biofilm through shear forces (STOP Biofilm)
All research projects of the FHNW Institute of Thermal and Fluid Engineering