NUMERICAL ANALYSIS OF LAMINAR FLOW AND HEAT TRANSFER FOR AN ABRUPT CIRCULAR CONTRACTION

机译：急速循环收缩的层流和传热的数值分析

获取原文

获取原文并翻译 | 示例

页面导航

摘要
著录项
相似文献
相关主题

摘要

Detailed predictions have been made of laminar thermo-fluid entry effects for the important practical case of an abrupt circular contraction. The Computational Fluid Dynamics code CFDS-FLOW3D (now CFX) was used, and special care was taken to achieve accurate data, by attention to issues of algorithm choice and grid fineness. Assuming constant properties, detailed local heat transfer predictions have been obtained, for a range of Prandtl and Reynolds numbers and contraction ratio p. The near-entry heat transfer is consistent with the flow behaviour, and gives a clear understanding of the process involved. Qualitatively the results are comparable with experimental and predictive data available in the literature, where however substantial effects due to property changes with temperature were evidenced. This study confirms the presence of flow separation and recirculation found and inferred by other authors, and investigates the phenomena in considerably more detail.

机译：对于突然的圆形收缩的重要实际情况，已经对层流热流体进入效应进行了详细的预测。使用计算流体动力学代码CFDS-FLOW3D（现为CFX），并通过注意算法选择和网格细度的问题来特别注意获得准确的数据。假设特性恒定，则对于一定范围的Prandtl和Reynolds数以及收缩率p，可以获得详细的局部传热预测。接近入口的传热与流动行为一致，并且可以清楚地了解所涉及的过程。从质量上讲，该结果与文献中的实验和预测数据相当，但是，由于性质随温度的变化而产生了显着影响。这项研究证实了其他作者发现和推断出的流动分离和再循环的存在，并对这种现象进行了更为详细的研究。

著录项

来源
《2002 ASME International Mechanical Engineering Congress and Exposition , Nov 17-22, 2002, New Orleans, Louisiana》|2002年|p.1-6|共6页
会议地点 New Orleans LA(US);New Orleans LA(US)
作者
S. PIVA; D. SAMBINELLO; M.W. COLLINS;
展开▼
作者单位

Dipartimento di Ingegneria Universita di Ferrara Via Saragat 1, 44100 Ferrara, Italia;

展开▼
会议组织
原文格式 PDF
正文语种 eng
中图分类能源与动力工程;
关键词
forced convection; entrance region; abrupt contraction; numerical; circular cucts;

机译：强制对流入口区域突然收缩；数值圆形裙式;

相似文献

外文文献
中文文献
专利

1. Erratum to 'Conjugate heat/mass transfer from a circular cylinder with an internal heat/mass source in laminar crossflow at low Reynolds numbers' [Int. J. Heat Mass Transf. 48 (2005) 419-424] and 'Unsteady conjugate heat/mass transfer from a circular cylinder in laminar crossflow at low Reynolds numbers' [Int. J. Heat Mass Transf. 47 (2004) 2469-2480] [J] . Gh. Juncu International Journal of Heat and Mass Transfer . 2008,第11a12期

机译：勘误“以低雷诺数在层流错流中结合来自带有内部热/质量源的圆柱体的热/质量传递” [Int。 J.热传质。 48（2005）419-424]和“在低雷诺数下，层流错流中圆柱的非稳态共轭热/质量传递” [Int。 J.热传质。 47（2004）2469-2480]
2. Numerical analysis of heat transfer enhancement of fluid past an oscillating circular cylinder in laminar flow regime [J] . Luo Xiangyu, Zhang Weichen, Dong Haitao, Progress in Nuclear Energy . 2021,第Sepa期

机译：流体传热增强的数值分析过去振荡圆柱体在层流状态下
3. Incremental Heat Transfer Number for Laminar Flow in Circular Tubes with the Boundary Condition of the Third Kind and Simple Design Formula for Shell-and-Tube Laminar Flow Heat Exchangers with Constant External Resistance [J] . DIMITRIOS M. ZARKADAS, KAMALESH K. SIRKAR International Journal of Transport Phenomena . 2005,第4期

机译：具有不变外阻的壳管式层流换热器第三类边界条件的圆形条件下圆管层流的增量传热数
4. Numerical analysis of laminar flow and heat transfer for an abrupt circular contraction [C] . S. Piva, D. Sambinello, M. W. Collins ASME International Mechanical Engineering Congress and Exposition . 2002

机译：突然圆形收缩的层流和热传递的数值分析
5. EFFECT OF SPATIALLY PERIODIC HEATING OR AN ABRUPT CONTRACTION AT INLET ON TRANSITIONAL AND TURBULENT HEAT TRANSFER IN A DUCT (UNSYMMETRIC, INTERRUPTED WALL CONDITIONS, SEPARATED FLOWS, ENHANCED, FORWARD STEP). [D] . GARCIA GUTIERREZ, ALFONSO. 1985

机译：入口处的周期性周期性加热或突然压缩对管道中的过渡和湍流传热的影响（不对称，壁面中断的条件，单独的流动，增强的，向前的步骤）。
6. Numerical Study of Laminar Flow and Convective Heat Transfer Utilizing Nanofluids in Equilateral Triangular Ducts with Constant Heat Flux [O] . Hsien-Hung Ting, Shuhn-Shyurng Hou 2016

机译：恒定热通量等边三角形管道中利用纳米流体的层流和对流换热的数值研究
7. Numerical Analysis of Heat and Mass Transfer Problem in Laminar Flow(Part II:Heat Transfer and Fluid Mechanics for Laminar Multiphase Flow with its Variable Properties in Circular Tube) [O] . 金丸邦康, 川江信治, 茂地徹, 1990

机译：层流内传热传质问题的数值分析（第二部分：圆管内可变特性的层流多相流传热与流体力学）

NUMERICAL ANALYSIS OF LAMINAR FLOW AND HEAT TRANSFER FOR AN ABRUPT CIRCULAR CONTRACTION

摘要

著录项

相似文献

相关主题

期刊订阅