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首页> 外文期刊>Heat Transfer Research >NUMERICAL OPTIMIZATION OF DOUBLE-DIFFUSIVE MIXED CONVECTION IN A RECTANGULAR ENCLOSURE WITH A REACTANT FLUID
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NUMERICAL OPTIMIZATION OF DOUBLE-DIFFUSIVE MIXED CONVECTION IN A RECTANGULAR ENCLOSURE WITH A REACTANT FLUID

机译：反应物流体矩形外壳中双扩散混合对流的数值优化

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摘要

p ), as well as of the Richardson (Ri), Lewis (Le), and Reynolds (Re) numbers on the irreversibility production of double-diffusive mixed convection in an open enclosure with a reactant fluid. The fluid with temperature-dependent viscosity and thermal conductivity enters and leaves the enclosure through the inlet and outlet located at the left and right, respectively. Moreover, a heat source located at the bottom wall transfers energy to the fluid, and thermochemical conversion takes place inside the enclosure. At the inlet the fluid is considered to have a high concentration, while a low concentration is imposed over the heater. The studied cases cover Ri = 0.75–5, Le = 0.1–5, W p = 0.2–0.4, and Re = 100–1000. The results include the temperature and concentration contours, average concentration profiles, average Nusselt number, global total entropy generation, and the average Bejan number. Simulations indicate that the thermochemical conversion is practically independent of the length of the heater, and its highest value or lowest concentration of the flow occurs at Le = 5, Ri = 1.25, and Re = 100. Furthermore, the entropy production is minimized at W p = 0.3, Re = 100, Ri = 0.75, and Le = 2.5. Therefore, the optimal condition of the thermochemical conversion device is attained at Le = 2.5, W p = 0.3, Re = 100, and 0.75 ≤ Ri ≤ 1.25.]]>
机译：<！[CDATA [在本文中，我们系统地研究了加热器长度的影响（ W p ），以及Richardson（RI），刘易斯（ LE），以及雷诺（RE）数字上具有反应物流体的开放式外壳中双扩散混合对流的不可逆性生产。具有温度依赖性粘度和导热率的流体进入并留下了位于左右的入口和出口的外壳。此外，位于底壁的热源转移到流体的能量，并且在外壳内部发生热化学转换。在入口处，流体被认为具有高浓度，而在加热器上施加低浓度。所研究的情况覆盖Ri = 0.75-5，Le = 0.1-5， W P = 0.2-0.4，并重新= 100-1000。结果包括温度和浓度轮廓，平均浓度分布，平均露珠数，全局总熵生成，以及平均BEJAN数。模拟表明热化学转化实际上与加热器的长度无关，并且其最高值或流动的最低浓度在Le = 5，Ri = 1.25和Re = 100时发生。此外，熵产生在< i> W p = 0.3，RE = 100，RI = 0.75，LE = 2.5。因此，在Le = 2.5， W P = 0.3，Re = 100，0.75≤RI≤1.25。]>

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  • 来源
    《Heat Transfer Research》 |2017年第18期|共18页
  • 作者

    Guillermo E. Ovando-Chacon; S. L. Ovando-Chacon; Juan C. Prince-Avelino; A. Rodriguez-Leon; C. Garcia-Arellano;

  • 作者单位

    Depto. Metal-Mecánica y Mecatrónica Tecnologico Nacional de Mexico Instituto Tecnológicode Veracruz Calzada Miguel ángel de Quevedo 2779 Veracruz Ver 91860 México;

    Depto. Química y Bioquímica Tecnologico Nacional de México Instituto Tecnológico de TuxtlaGutiérrez Carretera Panamericana Km. 1080 Tuxtla Gutiérrez Chis 29000 México;

    Depto. Metal-Mecánica y Mecatrónica Tecnologico Nacional de Mexico Instituto Tecnológicode Veracruz Calzada Miguel ángel de Quevedo 2779 Veracruz Ver 91860 México;

    Depto. Metal-Mecánica y Mecatrónica Tecnologico Nacional de Mexico Instituto Tecnológicode Veracruz Calzada Miguel ángel de Quevedo 2779 Veracruz Ver 91860 México;

    Instituto de Agroingenieria Campus Loma Bonita Universidad del Papaloapan Av. Ferrocarrils/n Cd. Universitaria Loma Bonita Oax 68400 México;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 热力工程理论;
  • 关键词

    double diffusive; mixed convection; reactant fluid; global total irreversibility; thermochemical optimization;

    机译：双重扩散;混合对流;反应物流体;全球总不可逆转;热化学优化;

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