An experimental study was conducted to investigate static stall hysteresis of a NASA GA(W)-1 airfoil at the chord Reynolds number of Re = 162,000. In addition to mapping the surface pressure distribution around the airfoil, a digital PIV system was used to make detailed flowfield measurements to quantify the occurrence and behavior of laminar boundary layer separation and transition on the airf...

An experimental study was conducted to investigate the aerodynamic characteristics of a NASA low speed GA(W)-1 airfoil at the chord Reynolds number of ReC=160,000. Aerodynamic hysteresis was observed for the angles of attack close to the static stall angle of the airfoil. In addition to mapping surface pressure distribution around the airfoil, a high-resolution PIV system was used to make detai...

Background Left Ventricular (LV) twist, defined as the difference in rotation between the apex and the base, has recently been suggested as a diagnostic imaging biomarker for LV dysfunction [1]. Increasing age is associated with an increase in apical rotation, which leads to an increase LV twist [2-4]. Recently, it has been suggested that LV circumferential-longitudinal shear angle (CL-shear an...

The purpose of this study was to compare the presence or absence of UV irradiation on the separation performance and morphology of the TiO2-assembled thin film membranes (in different concentrations). Furthermore, an attempt was made to show and compare the effect of the presence of TiO2 nanoparticles in aqueous and organic phases during the interfacial polymerization proc...

background: abnormal angulation of the lunate can be an indication of intercarpal pathology. on magnetic resonance images (mris) the lunate often looks dorsally angulated, even in healthy wrists. the tilt on individual slices can also be different and might be misinterpreted as pathological, contributing to inaccurate diagnoses and unnecessary surgery. the primary aim of this study was to deter...

This study reconstructed the flow field of a symmetrical variable inlet guide vane in centrifugal compressor through passive control method slots. Based on high-fidelity numerical simulation model verified by experiments, influence different slot forms was investigated, and mechanism revealed. The results demonstrated that can effectively suppress suction surface separation broaden range low-lo...

conclusions although some of the orthopedic surgeons are not interested to manage these fractures surgically and most of them treat these cases conservatively (casting, etc.), in most displaced intra-articular calcaneal fractures, surgical treatment is the method of choice. moreover, in non-surgical treatment the prevalence of these complications among the patients is more and as a result, inev...

In regards to the problem of tubing precision separation, high-efficiency separation method for under eccentric wheel high-speed rotational bending fatigue loading is proposed, which aims promote initiation cracks at root annular V-notch on surface. Research stress concentration effect notch surface carried out. The design takes into account characteristics separation. numerical simulation calc...

Supersonic separators have found extensive applications in dehumidification of natural gases since 2003. Unlike previous studies, which have investigated the inlet conditions and nozzle geometry of supersonic separators for pure fluids, the present study employed a combination of momentum, heat, and mass transfer equations along with Virial equation of state (EOS) to inspect the effect of inlet...