1.0 Introduction he aim of IEA Wind Task 32 is to address the very fast development of wind lidar technologies and their applicability for more accurate measurement of wind characteristics relevant to reliable deployment of wind energy power systems. The purpose is to bring together actors in the research community and industry to create synergies in the many R&D activities already on-going in ...

In this paper a previously developed theoretical model of the measurement process performed by a transittime ultrasonic anemometer is applied to a fluid flowing through a circular section pipe. This model considers the influence of the shift of the acoustic pulse trajectory from straight propagation due to the flow on the measured speed. The aim of this work is to estimate the errors induced in...

Upon its development and initial characterization, the supersonic variant of nanoscale thermal anemometry probe (S-NSTAP) was deployed in a wind tunnel facility, where both freestream boundary layer measurements were obtained at $$M_\infty =2$$ . The low operating stagnation pressures generated reliable data, effects Reynolds number, Mach number overheat ratio on sensor’s heat transfer investig...

The knowledge of droplet size distribution and concentration allows us to calculate the wetness fraction isentropic turbine efficiency as well provide significant data for erosion modeling. For that purpose, a miniature optical extinction probe with diameter 9.4mm was designed, manufactured tested. is equipped heater, which maintains all components clean from any water contamination. In this pa...

Turbulent flow, mainly originating from the rotor-stator interaction (RSI), is closely associated with normal and safe operation of centrifugal pump. In current research, to clarify turbulent flow in pump a vaned diffuser, non-intrusive LDA (Laser Doppler Anemometry) system applied measure velocity pulsation signals at different regions when operates various rates. Time frequency domain analysi...

Forced convective boiling is of great interest for several applications in the power and process industry, particularly nuclear plants. Under certain nominal, incidental or accidental conditions, crisis (considering Departure from Nucleate Boiling as well Dry-Out) may lead to mechanical damage heated surface. An accurate prediction conditions leading occurrence this phenomenon then essential. I...