Numerical prediction of heat transfer and pressure drop in three-dimensional channels with alternated opposed ribs

Desrues, Tristan; Marty, Philippe; Fourmigué, Jean-François

doi:10.1016/j.applthermaleng.2012.03.013

Cited by 43 publications

(16 citation statements)

References 30 publications

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“…In addition, they exposed increasing the rib height with in line array causes to increase the Nusselt number and the friction factor values. A numerical investigation of heat transfer and pressure drop in three-dimensional geometries with the alternated opposed ribs has been carried out by T. Desrues [12]. The results indicate that the heat transfer enhances only when the Reynolds number is greater than a critical value.…”

Section: A R C H I V E O F S I Dmentioning

confidence: 99%

Numerical Investigation of Heat Transfer and Pressure Drop in a Corrugated Channel

Deylami

Amanifard

Sanaei

et al. 2013

IJE

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Changes in rib-height to channel-height ratio (e/H) has a significant effect on the heat transfer and pressure drop characteristics inside corrugated channels. In current paper, the variation of (e/H) was investigated numerically as well as a deep concern for finding the adequate turbulent model. In this regards, the governing equations were solved by a finite volume approach in a wide range of rib-height to channel-height ratio (0.06 < e/H < 0.26) and the Reynolds numbers (5400 < Re < 23000). The predicted results reveal that the RNG ε kturbulence model provides better agreement with available experimental data than other turbulence models. The computed results not only confirm the noticeable effects of (e/H) on the heat transfer performance and pressure drop but also, demonstrate the optimum corrugation design limits.

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Section: A R C H I V E O F S I Dmentioning

confidence: 99%

Numerical Investigation of Heat Transfer and Pressure Drop in a Corrugated Channel

Deylami

Amanifard

Sanaei

et al. 2013

IJE

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“…Considering process intensification and enhanced mixing efficiency, different design approaches were suggested; many of them deal with modifications of the tube walls of microreactors, such as herringbone-like ribs on one tube wall as in the staggered herringbone mixer introduced by Stroock et al [2]. Other mixing and intensification concepts are based on the multilamination principle [3,4] or channel curvature [5]. Most of these intensification concepts have in common that enhanced heat and mass transfer is achieved by passive structures which severely influence flow pattern and flow characteristics.…”

Section: Introductionmentioning

confidence: 99%

Influence of Design Parameters on Hydrodynamics and Heat Transfer of a Modularized Millireactor

Biessey

Grünewald

2014

Chem Eng & Technol

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An apparatus with rectangular product channels and static mixing elements for process intensification is investigated in terms of heat transfer and hydrodynamics. Herringbone-like static mixing elements increase the overall heat transfer coefficient significantly, and the stall angle was found to have a major influence on hydrodynamics and heat transfer. The knowledge of structural parameters of the mixing elements is crucial for apparatus design and prediction of the apparatus performance. A method to derive mean structural parameters from experimental results is presented.

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“…The arrangement of the ribs affects the overall performance depending on the circumstances. For example, the effects of the rectangular cross-sectional ribs on heat transfer have been considered for the staggered arrangement (Mayle [5], Webb and Ramadhyani [6], Liu and Wang [7], Wongcharee et al [8], Desrues et al [9], Xie et al [10], Marocco and Franco [11]). On the other hand, the rectangular ribs have also been investigated in terms of the symmetrical arrangement (Hwang and Liou [12], Lopez et al [13], Tafti [14], Pourmahmoud et al [15], Tokgoz et al [16]).…”

Section: Introductionmentioning

confidence: 99%

Visualization of flow characteristics between the ribbed plates via particle image velocimetry

2021

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Heat transfer is considerably influenced by flow stagnation, separation and reattachment regions due to the ribbed plates. Placing the ribs such as fins, turbulators that trigger the flow separation, enhances the heat transfer inside the channel by increasing the turbulence intensity. The flow separation is caused by disturbing the thermal and hydrodynamic development lengths. Moreover, these ribs also make an impact that increases the heat transfer by enlarging the heat transfer area. However, the ribs lead to the increment of the required pumping power in the meantime due to the increasing pressure loss in such systems. This aforementioned method is used for the heat exchangers, the solar collectors, the cooling of electronic devices. The investigation of the flow characteristics is very crucial to understand the heat transfer mechanism in the ducts for this reason. In the present paper, the flow characteristics between the plates have been experimentally researched. Particle Image Velocimetry system in the open water channel of Selcuk University Advanced Technology Research and Application Center has been used. The smooth plates have been taken as the reference model and used for the comparison with the plates having the rectangular cross-sectional ribs. The ribs with various heights of 0.1 ≤ h' = h/H ≤ 0.3 have been symmetrically placed on the internal surfaces of the plates via several spacing values of 0.5 ≤ S' = S/H ≤ 1 for varying Reynolds numbers as 10000 ≤ Re ≤ 20000. As a result, the flow characteristics have been given in terms of the contour graphics for velocity vector field, velocity components and vorticity.

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Numerical prediction of heat transfer and pressure drop in three-dimensional channels with alternated opposed ribs

Cited by 43 publications

References 30 publications

Numerical Investigation of Heat Transfer and Pressure Drop in a Corrugated Channel

Numerical Investigation of Heat Transfer and Pressure Drop in a Corrugated Channel

Influence of Design Parameters on Hydrodynamics and Heat Transfer of a Modularized Millireactor

Visualization of flow characteristics between the ribbed plates via particle image velocimetry

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