Experimental investigation of geometry effects and performance of five-hole probe in measuring jets in crossflow

Vortical and shear flows are common in turbomachinery. Multi-hole pressure probes used turbomachinery order to provide robust accurate measurements of both velocity components. In this study, two different miniature five-hole designed fabricated, with a cobra shape. The probe tip was 1.45 mm it maintained that size for the length shape formation, providing very close proximity solid boundaries reduced flow blockage. difference among corresponded head geometry, as one formed pyramid shape, while other flat calibration process carried out an open-circuit suction wind tunnel range ±32⁰ yaw pitch direction. results showed exhibits high angle spatial sensitivity reliable measurement ±28⁰ provided unexpected well data despite fact is simple form. superior performance. particular, offers 12.5% wider operating range. prove effectiveness probe, were obtained jet cross flow. evaluate performance further, surface fit model employed produce ideal coefficients. These redefine magnitude velocities measured domain. accuracy assessed, comparing produced by variants indicate operates reliably large constantly changing vector, which occurs