کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
656300 1457681 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simultaneous measurements of fluctuating velocity and pressure in a turbulent mixing layer
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Simultaneous measurements of fluctuating velocity and pressure in a turbulent mixing layer
چکیده انگلیسی

A novel experimental technique to measure static pressure fluctuation was applied in order to evaluate velocity–pressure correlation in a turbulent mixing layer. The developing region of the mixing layer was found to be out of equilibrium state, indicating the oscillatory velocity fluctuation due to vortex shedding and remarkable production of turbulence. The contribution of pressure-related terms in the transport equation of the Reynolds stress is found to be well captured by the present method. A simple model for pressure diffusion by Lumley gave a satisfactory approximation when the flow approached the self-similar state. However, the analogy between pressure diffusion and turbulent diffusion becomes weaker when the flow exhibits characteristics which are not found in the equilibrium state.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Fluid Flow - Volume 27, Issue 4, August 2006, Pages 737–746
نویسندگان
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