Application of Particle Image Velocimetry to Measurement of Poisoeullie Flow and Flow around a Circular Cylinder
Zhang Wei¹,Wang Yuan¹,Xu Zhong¹,Jin Wen²
（1.School of Energy and Power Engineering,Xi'an Jiaotong University, Xi'an 710049,China; 2.Xi'an Aerotechnical College)

Abstract: In order to test the accuracy and resolution of complex vortex by particle image veloci-metry(PIV),velocity fields of poisoeulie flow and flow around a circular cylinder were measured. Comparison between the measured velocity profile and analytical solution of poisoeullie flow shows that good agreement was found within the 90% measured region, while the former was lower than the latter near the wall because of velocity polarization. Further measurement of flow around a circular cylinder at Re=500 provided the distribution area of main flow, shear layer flow, recirculated flow and vortex. The results validate that PIV is well suitable to investigate complex flow pattern.
Keywords: PIV;poisoeullie flow;measurement accuracy;flow around a circular cylinder