کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
708554 1461108 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Small-scale characteristics and turbulent statistics of the flow in an external gear pump by time-resolved PIV
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
پیش نمایش صفحه اول مقاله
Small-scale characteristics and turbulent statistics of the flow in an external gear pump by time-resolved PIV
چکیده انگلیسی

Recent technology advancements in Particle Image Velocimetry (PIV) technique offers a new possibility to study the complex turbulent flows over a wide range of scales. It can be used for the estimation of the turbulent kinetic energy dissipation rate including spatial derivatives of the velocity fluctuation components. In this study the flow characteristics of an external gear pump were studied with time-resolved Particle Image Velocimetry. Measurements were performed for two different spatial resolution configurations and various interrogation areas to estimate the dissipation rate of the turbulent kinetic energy. Results show that the spatial resolution is a critical factor in the accuracy of the measurements in the dissipation rate estimations. The optimal results can be achieved if the interrogation area is neither too large (sampling phenomenon) nor too small (noise in the measurement data). The effect of number of samples employed in the ensemble-averaging was considered as well.


► Flow characteristics of external gear pump were studied with time-resolved PIV.
► Measurements were performed for different spatial resolution configurations.
► Various interrogation areas were used to estimate the dissipation rate.
► PIV data was used to estimate the turbulent kinetic energy dissipation rate.
► The effect of number of samples employed in the ensemble-averaging was considered.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Flow Measurement and Instrumentation - Volume 29, March 2013, Pages 52–60
نویسندگان
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