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首页> 外文期刊>Computational thermal sciences >THREE-DIMENSIONAL NUMERICAL LAMINAR CONVECTION HEAT TRANSFER AROUND LATERAL PERFORATED FINS
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THREE-DIMENSIONAL NUMERICAL LAMINAR CONVECTION HEAT TRANSFER AROUND LATERAL PERFORATED FINS

机译:绕横向穿孔细孔的三维数值层流对流换热

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摘要

Three-dimensional laminar steady fluid flow and conjugate heat transfer from an array of rect-angular solid and perforated fins are presented numerically. Perforations with window square cross section in various numbers and dimensions are arranged in the lateral surface of fins. Due to perforations, the flow may become unsteady sooner than solid fins; hence, the computation performed for the range of Reynolds numbers 100 to 250. For analysis, a FORTRAN code base on the SIMPLE algorithm with staggered grid is developed. Also, the second-order upwind tech-nique is used to calculate convective terms in momentum and energy equations. Results show that by utilizing perforated fins, considerable fin weight reduction is achieved without any penalty for heat transfer rate.
机译:数值表示了一系列矩形角固体和多孔翅片的三维层流稳定流体流动和共轭传热。在翅片的侧表面上布置有具有各种数量和尺寸的窗方形横截面的穿孔。由于穿孔,流动可能会比实心鳍片变得不稳定。因此,对雷诺数100到250的范围进行了计算。为了进行分析,开发了基于具有交错网格的SIMPLE算法的FORTRAN代码。同样,二阶逆风技术用于计算动量和能量方程中的对流项。结果表明,通过使用穿孔的散热片,可以显着降低散热片的重量,而不会影响传热速率。

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