کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
518063 867554 2015 20 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A robust and accurate numerical method for transcritical turbulent flows at supercritical pressure with an arbitrary equation of state
ترجمه فارسی عنوان
یک روش عددی قوی و دقیق برای جریانهای توربنی انتقادی در فشار فوق بحرانی با معادله دلخواه از حالت
کلمات کلیدی
مایع فوق بحرانی، شرایط انتقامجویانه، اثرات مایع واقعی، اموال بدون فساد، گرفتن تماس سطح انتقالی، طرح های دقیق با درجه بالا
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی

This paper addresses issues in high-fidelity numerical simulations of transcritical turbulent flows at supercritical pressure. The proposed strategy builds on a tabulated look-up table method based on REFPROP database for an accurate estimation of non-linear behaviors of thermodynamic and fluid transport properties at the transcritical conditions. Based on the look-up table method we propose a numerical method that satisfies high-order spatial accuracy, spurious-oscillation-free property, and capability of capturing the abrupt variation in thermodynamic properties across the transcritical contact surface. The method introduces artificial mass diffusivity to the continuity and momentum equations in a physically-consistent manner in order to capture the steep transcritical thermodynamic variations robustly while maintaining spurious-oscillation-free property in the velocity field. The pressure evolution equation is derived from the full compressible Navier–Stokes equations and solved instead of solving the total energy equation to achieve the spurious pressure oscillation free property with an arbitrary equation of state including the present look-up table method. Flow problems with and without physical diffusion are employed for the numerical tests to validate the robustness, accuracy, and consistency of the proposed approach.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 300, 1 November 2015, Pages 116–135
نویسندگان
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