... and numerical methods compressors SBLI unsteady experimental PIV CFD LES Directorate-General for Research and Innovation 10.13039/100004431 EC grant 860909 The flow through a transonic compressor blade row is highly and naturally unsteady. This behavior is known to cause...

...Mizuki Okada; Loris Simonassi; Gustavo Lopes; Sergio Lavagnoli Particle image velocimetry (PIV) measurements in the blade-to-blade (B2B) plane and cascade outlet plane (COP) of a high-speed low-pressure turbine (LPT) cascade were performed at engine-representative outlet Mach number (0.70–0.95...

... of centrifugal compressors operating under the influence of VDRS have been presented. Two different approaches were used for the identification of VDRS: pressure measurements and two-dimensional (2D) particle image velocimetry (PIV). Frequency analysis based on spectral maps and cell development processes were...

... on detailed flow fields, local temperature distributions, and pressure drops in a two-pass square channel, particle image velocimetry (PIV), infrared thermography (IR camera), and pressure transducer measurements are performed. The turbulator pitch, clearance, and truncation gap ratio based on the channel...

.... Measurements are conducted at Reynolds numbers of 10,000 and 30,000 based on the maximum velocity and pin diameter. Stereoscopic particle image velocimetry (PIV) is used to describe the flow field and turbulence characteristics in the wake of the first and third row pin. It is found that the dominating...

... to a strict combination of numerical and experimental analysis. Particle image velocimetry and stereo-PIV measurements are used to validate numerical RANS simulations, which are useful to obtain an easier and faster analysis of the three-dimensional flow structure and extend the study to a wider range of test...

... velocimetry (PIV), respectively. In the case of a circular film-cooling hole, the penetration of the coolant jet into the mainstream was suppressed by the swirling motion of the coolant. As a result, although the coolant jet was deflected in the pitch direction, the film cooling effectiveness on the wall...

... of the local flow fields of the secondary flow phenomena and the interaction mechanism between separated flow and forcing jet were analyzed in Ref. [ 16 ] by means of experimental PIV data and numerical results for pulsed blowing at both locations individually and in combination. Numerical parameter variations...

.... The coolant is injected with different frequency and amplitude. The three-dimensional velocities are recorded using nonintrusive PIV, and seeding is provided for both air streams. Two different cylindrical hole geometries are studied, with different angles. Blowing ratio is varied over a range to simulate...

... between coolant and freestream. The three dimensional velocities are recorded using nonintrusive PIV; seeding is provided for both air streams. Two different cylindrical hole geometries are studied, with different angles. Blowing ratio is varied over a range to simulate pressure side film cooling...