Finding of parameters of helical symmetry for unsteady vortex flow based on phase-averaged PIV measurement data
IV Litvinov, DK Sharaborin, SI Shtork - Thermophysics and Aeromechanics, 2015 - Springer
IV Litvinov, DK Sharaborin, SI Shtork
Thermophysics and Aeromechanics, 2015•SpringerThe phase-averaged velocity distributions were applied for calculation of parameters of a
precessing vortex core; these were the input data for calculation of precession frequency by
a formula derived from the helical vortex theory. It was demonstrated that the calculated
frequency is within 10% error from the frequency measured in experiments. These results
confirm the theory validity, and this opens opportunities for analysis of mechanisms
controlling the precessing vortex core and external factors.
precessing vortex core; these were the input data for calculation of precession frequency by
a formula derived from the helical vortex theory. It was demonstrated that the calculated
frequency is within 10% error from the frequency measured in experiments. These results
confirm the theory validity, and this opens opportunities for analysis of mechanisms
controlling the precessing vortex core and external factors.
Abstract
The phase-averaged velocity distributions were applied for calculation of parameters of a precessing vortex core; these were the input data for calculation of precession frequency by a formula derived from the helical vortex theory. It was demonstrated that the calculated frequency is within 10% error from the frequency measured in experiments. These results confirm the theory validity, and this opens opportunities for analysis of mechanisms controlling the precessing vortex core and external factors.
Springer