【摘要】：針對復雜熱防護結構,開發(fā)了一種求解非正交性流/固界面的耦合傳熱程序。流體和固體區(qū)域采用同一積分、守恒型的RANS(Reynolds-Averaged Navier-Stock)方程,通過有限體積法進行離散求解。為了保證非正交界面上的溫度和熱流密度連續(xù),提出了一種結合網(wǎng)格周邊信息計算界面熱流密度的插值方法。利用該插值耦合方法模擬了雙層復合平板和噴管的熱傳導。數(shù)值結果表明:該插值方法在空間上具有2階精度;噴管壁面上的對流換熱系數(shù)沿軸向先增大后減小,在喉部上游達到最大值,當噴管入口壓力增加3.38倍時,對流換熱系數(shù)的最大值相應增加了3.13倍;喉襯與殼體界面上溫度的計算值和試驗結果存在一定差異,這是由于本文數(shù)值計算未考慮接觸熱阻引起的。
[Abstract]:A coupled heat transfer program for solving nonorthogonal flow / solid interface is developed for complex thermal protection structures. The RANS (Reynolds-Averaged Navier-Stock) equation of the same integral and conservation type is used in the fluid and solid regions. The solution is discretized by the finite volume method. In order to ensure the continuity of temperature and heat flux on non-orthogonal interface, an interpolation method is proposed to calculate the heat flux density of interface by combining the information of grid periphery. The interpolation coupling method is used to simulate the heat conduction of double layer composite plate and nozzle. The numerical results show that the interpolation method has the second order accuracy in space, the convection heat transfer coefficient on the nozzle wall increases first along the axial direction, then decreases, and reaches the maximum value in the upper part of the throat. When the nozzle inlet pressure increases 3.38 times, The maximum value of convection heat transfer coefficient increases by 3.13 times, and the calculated temperature at the interface between the throat lining and the shell is different from the experimental results, which is due to the fact that the contact thermal resistance is not taken into account in the numerical calculation in this paper.
【作者單位】： 南京理工大學機械工程學院;
【分類號】：V430;TK471

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1 楊云;于曉東;;三軸傳感器非正交性誤差分析及測量方法研究[J];水雷戰(zhàn)與艦船防護;2009年01期

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本文編號：2247101