A numerical study of natural convective heat transfer in a cavity
using a high-order differential scheme

CHUR > College of Engineering > Department of Mechanical Engineering > Seminar papers > Item 987654321/34302

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Title:	A numerical study of natural convective heat transfer in a cavity using a high-order differential scheme
Authors:	楊一龍 Yang, Yi-Lung
Contributors:	機械工程學系 Mechanical Engineering
Keywords:	Galerkin高階微分因子;瑞利數;預調矩陣 Galerkin high-order differential scheme;Rayleigh number;preconditioning matrix
Date:	2009
Issue Date:	2014-06-27 02:46:06 (UTC+8)
Abstract:	本論文利用自然座標之高階微分因子求解可壓縮流那維爾史托克方程式，其通量分解成三個部份各別計算後再加總進行時間積分方式求解。其中對流項與擴散項皆採用中央差分之型式，需獨立微分以避免數值誤差，至於壓力項在璧面採用外插型式進行梯度計算，至於流場內部也是以中央差分之型式完成。分析之流體假設為理想氣體，其黏滯係數依Sutherland 方程式計算. 採用四階Runge-Kutta方式配合預調矩陣做時間積分，本方法在瑞利數105以下無需任何人工黏滯，但分析之結果顯示在瑞利數103以下，擴散主導之流場 A high order Galerkin discretization scheme is used for solving steady compressible Navier-Stokes equations. The pointwise numerical fluxes are separated into convective fluxes, acoustic fluxes, and viscous fluxes. The separation of convective flux and vi
Appears in Collections:	[Department of Mechanical Engineering] Seminar papers

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