Two high-speed stereo PIV (HS-SPIV) systems have been used for the characterization of pulsed and continuous jet actuators in the turbulent boundary layer (TBL) wind tunnel at ONERA Lille, an Eiffel type wind tunnel in suction mode with a low turbulence level. The test aimed at generating an aerodynamic database useful for the characterisation of (unsteady) vortical structures responsible for t...

In this study, particle image velocimetry was applied to measure the flow field around bow region of a trimaran with different appendages. The dimensionless axial velocity u/U in test planes 1 and 2 testing model measured by using towed underwater stereoscopic (SPIV) system. Based on data, local sinkage values appendages at speeds 1.766 2.943 m/s were presented. addition, effects speed, bulbous...

It is well-established that micro-scale wind turbines require high blade solidity in order to overtake friction torque of all mechanical parts and starts operating. Therefore, multi-bladed rotors with a low design tip-speed ratio ? are advocated. However, no consensual admitted by the scientific community at Reynolds number because reliability airfoil data, used element momentum theory, questio...

A novel, accurate and simple stereo particle image velocimetry (SPIV) technique utilising three cameras is presented. The key feature of the new technique is that there is no need of a separate calibration phase. The calibration data are measured concurrently with the PIV data by a third paraxial camera. This has the benefit of improving ease of use and reducing the time taken to obtain data. T...

The sharp but irregular interface that separates the instantaneous turbulent and irrotational flows is termed as turbulent/non-turbulent (TNTI). TNTI can be widely observed in various types of flow, such boundary layers, jets combustion flame fronts. Due to its importance on intermittency entrainment process, has been explored geometry dynamic properties (da Silva et al., 2014). Most studies fo...