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微尺度燃燒過程中傳熱準(zhǔn)則數(shù)分析
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國(guó)家自然科學(xué)基金資助項(xiàng)目(50706016)、江蘇省基礎(chǔ)研究計(jì)劃資助項(xiàng)目(BK2008245),、江蘇省高校優(yōu)勢(shì)學(xué)科建設(shè)工程資助項(xiàng)目和江蘇大學(xué)“拔尖人才培養(yǎng)工程”資助項(xiàng)目


Analysis of Criterion Number of Heat Transfer in Micro Combustion Process
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    摘要:

    在微尺度條件下,,由于對(duì)流傳熱和燃燒過程耦合發(fā)生在很小的范圍內(nèi),,因此微燃燒室內(nèi)部的對(duì)流換熱問題比較復(fù)雜,。根據(jù)微燃燒室內(nèi)部流動(dòng)、傳熱和燃燒過程模擬計(jì)算的結(jié)果,采用無量綱分析方法,,計(jì)算出表征距入口x處各通道截面平均對(duì)流換熱強(qiáng)度的努塞爾數(shù)Nux,并分析入口參數(shù)對(duì)Nux的影響,。對(duì)多組計(jì)算結(jié)果進(jìn)行多元回歸擬合,,最終得到各截面平均Nux與雷諾數(shù)Rex、普朗特?cái)?shù)Prx和無量綱變量θ之間的函數(shù)表達(dá)式,。

    Abstract:

    In the micro-scale conditions, due to the heat transfer coupling with the combustion process within the micro-combustor, the convection and heat transfer in the micro-combustor were rather complicated issues. Based on the simulation results of the flow, heat transfer and combustion process in the micro-combustor. Dimensionless analysis method was used to calculate the dimensionless Nux number which described the convection and heat transfer intensity in the channel cross-section away from the entrance at x. Then effects of inlet parameters on the dimensionless Nuxnumber were analyzed. The formula between the dimensionless variables θ and average Nux,,Rex,Prx numbers in the channel crosssection was obtained by multiple regression analysis.

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潘劍鋒,周俊,唐愛坤,邵霞,薛宏.微尺度燃燒過程中傳熱準(zhǔn)則數(shù)分析[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2011,42(12):197-201,219. Pan Jianfeng,Zhou Jun,Tang Aikun,Shao Xia, Xue Hong. Analysis of Criterion Number of Heat Transfer in Micro Combustion Process[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(12):197-201,219.

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  • 在線發(fā)布日期: 2011-12-19
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