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幂律流体饱和多孔介质平板通道流动特性分析

DOI: 10.3969/j.issn.1006-7043.201312094

Keywords: 幂律流体, 多孔介质, 动量积分, 流动特性, 速度分布, 非达西流区

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Abstract:

针对幂律流体在填充多孔介质平行板通道中强迫流动充分发展的流动特性问题,基于Darcy-Brinkman-Forchheimer流动模型,通过假定边界层内速度分布经验关系式,采用边界层动量积分方法,推导出边界层厚度、轴向流速及压力降的无量纲计算表达式.比较了线性、抛物线两种速度分布模型与分析解的接近程度,并讨论了达西数Da、综合惯性参数F’、粘性比M、孔隙率φ及幂律指数n等对无量纲轴向流速分布和压力降的影响.计算结果表明,在非达西流区抛物线速度分布模型的精度更高,除M外,Da、F’、M、φ及n对无量纲轴向流速分布和压力降均有较大影响.

References

[1]  HARRIS S D, INGHAM D B, POP I. Mixed convection boundary-layer flow near the stagnation point on a vertical surface in a porous medium: Brinkman model with slip[J]. Transport in Porous Media, 2009, 77: 267-285.
[2]  CHEN H T, CHEN C K. Natural convection of a non-Newtonian fluid about a horizontal cylinder and sphere in a porous medium[J]. International Communications in Heat and Mass Transfer, 1988, 15: 605-614.
[3]  SHENOY A V. Darcy-Forchheimer natural, forced and mixed convection heat transfer in non-Newtonian power-law fluid-saturated porous media[J]. Transport in Porous Media, 1993, 11(3): 219-241.
[4]  CHENG C Y. Soret and Dufour effects on free convection boundary layers of non-Newtonian power law fluids with yield stress in porous media over a vertical plate with variable wall heat and mass fluxes[J]. International Communications in Heat and Mass Transfer, 2011, 38: 615-619.
[5]  PANTOKRATORAS A, MAGYARI E. Forced convection flow of power-law fluids over a flat plate embedded in a Darcy-Brinkman porous medium[J]. Transport in Porous Media, 2010, 85(1): 143-155.
[6]  HADIM H. Non-Darcy natural convection of a non-Newtonian fluid in a porous cavity[J]. International Communications in Heat and Mass Transfer, 2006, 33(10): 1179-1189.
[7]  CHEN G M, TSO C P. Effects of viscous dissipation on forced convective heat transfer in a channel embedded in a power-law fluid saturated porous medium[J]. International Communications in Heat and Mass Transfer, 2011, 38(1): 57-62.
[8]  EL-AMIN M F, SALAMA A, et al. A conditionally stable scheme for a transient flow of a non-newtonian fluid Saturating a porous medium[J]. Procedia Computer Science, 2012, 9: 651-660.
[9]  NAKAYAMA A, SHENOY A V. Non-Darcy forced convective heat transfer in achannel embedded in a non-Newtonian inelastic fluid-saturated porous medium[J]. Can J Chem Eng, 1993, 71: 168-173.
[10]  NIELD D A, KUZNETSOV A V. Thermally developing forced convection in a channel occupied by a porous medium saturated by a non-Newtonian fluid[J]. International Journal of Heat and Mass Transfer, 2005, 48(6): 1214-1218.
[11]  CHEN G, HADIM H A. Forced convection of a power-law fluid in a porous channel―integral solutions[J]. Journal of Porous Media, 1999, 2(1): 59-70.
[12]  THAYALAN N, HUNG Y M. Momentum integral method for forced convection in thermal nonequilibrium power-law fluid-saturated porous media[J]. Chemical Engineering Communications, 2013, 200(2): 269-288.

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