کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6930283 867532 2016 37 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A method for analysis of stability of flows in ribbed annuli
ترجمه فارسی عنوان
یک روش برای تحلیل ثبات جریان در حلقه های رگه ای
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
A spectrally-accurate algorithm for the linear stability analysis of pressure-gradient-driven flows in corrugated annuli is presented. The algorithm is suitable to analyze three-dimensional disturbances in the form of spiral traveling waves as well as in the form of streamwise vortices. A separate algorithm for the analysis of axisymmetric disturbances is presented. The discretization method relies on Fourier expansions in the streamwise and circumferential directions and on Chebyshev expansions in the radial direction. The Immersed Boundary Conditions (IBC) method is used to enforce the physical boundary conditions at the corrugated walls. Numerous tests confirm the spectral accuracy of the results. The performance of the algorithm is consistent with the theoretical predictions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 314, 1 June 2016, Pages 35-59
نویسندگان
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