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گواهی نمایه سازی مقاله The Effect of Spatial Resolution on the Swirl Intensity and the Size of Vortical Structures

عنوان مقاله: The Effect of Spatial Resolution on the Swirl Intensity and the Size of Vortical Structures
شناسه (COI) مقاله: ICHEC07_004
منتشر شده در هفتمین کنگره ملی مهندسی شیمی در سال ۱۳۹۰
مشخصات نویسندگان مقاله:

m.h Shafiei Mayam - Assistant professor, University of Sistan and Baluchestan

خلاصه مقاله:
The effect of spatial resolution on the coherent structures in the outer region of a turbulent boundary layer which subjected to a strong adverse pressure gradient has been studied usingparticle image velocimetry (PIV). The experimental set-up is designed to achieve flow conditions corresponding to trailing-edge stall of an airfoil. Large sets of instantaneous velocity fields are acquired by PIV in streamwise-wall-normal planes at three different streamwise locations. Thevortices are detected using λci criteria. The essential features of the vortices and vortex packets are similar to those found in zero-pressure-gradient turbulent boundary layers. The vortices are however slightly more intense in the zero-pressure-gradient turbulent boundary layers. Some of the characteristics of the spanwise vortices are also documented.

کلمات کلیدی:
Spatial resolution, swirl intensity, spanwise vortices, vortex diameter, coherent structures

صفحه اختصاصی مقاله و دریافت فایل کامل: https://www.civilica.com/Paper-ICHEC07-ICHEC07_004.html