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Journal ArticleDOI

Flow and thermal characteristics of jet impingement: comprehensive review

TL;DR: A comprehensive review on jet impingement heat transfer is presented to consider the state-of-the-art in this field in this article, where a significant number of papers dealing with experimental and computational studies on different physical and computational aspects of jet impinging flows are reviewed.
Abstract: A comprehensive review on jet impingement heat transfer is presented to consider the state-of the art in this field. Among all the single-phase heat transfer arrangements possible, it has the maximum heat transfer rate. A number of arrangements are possible to represent a practical or physical situation, such as, jet impingement on a solid flat surface or surface fitted with different kinds of turbulent promoters, inclined plane surface and cylindrical convex/concave surface, etc. A significant number of papers dealing with experimental and computational studies on different physical and computational aspects of jet impinging flows are reviewed. Several parameters were found to influence the characteristics, such as, flow confinement, nozzle shape, jet to plate spacing and Reynolds number. An extremely small number of studies dealing with application based jet impingement heat transfer configurations (e.g., ribs fitted impingement plate, moving impingement plate, etc) experimentally and numerically have been reported in the literature. Various computational approaches, such as, RANS, LES, DNS and hybrid models, that are used to study the jet impingement heat transfer, with their complexities and boundary conditions, have been reviewed. It was observed that majority of RANS based turbulence models did not predict impinging flows accurately and its complexities except a few. Many authors have reported that LES is capable of predicting the flow field and heat transfer data within the accepted accuracy limits. DNS can be applied to simple geometry with low Reynolds number. Recently some authors have employed hybrid models, such as, PANS, DES, etc., and concluded that these models provide reasonably accurate results and were found to be computationally less expensive than LES and DNS.
Citations
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Journal ArticleDOI
TL;DR: In this article, the effects of heat sink height (H, 15, 30, 45, 60 mm), pore density of the inserted copper foam (PPI, pore per inch including 10, 20, and 30) and the gas flow Reynolds number (Re, varying from 2053 to 12737), were systematically investigated.

63 citations

Journal ArticleDOI
Xu Li, Chao Tang, Qian Wang, Li Xiaoping, Jian Hao 
TL;DR: In this paper, the authors used UDF to simulate the water vapor condensation process in a natural gas pipeline and compared the simulation results with the Friedel method for the same conditions of flow rate and temperature difference.
Abstract: Condensation characteristics of gas pipelines containing little vapor in different elbows have been studied using a numerical calculation method. This is for the purpose of addressing the problem regarding condensed water corroding the inner wall of pipelines. Based on the condensation model of pipelines with low vapor content, the water vapor condensation process in a natural gas pipeline is simulated by UDF within Fluent software. Pipeline pressure simulated by Fluent is compared with the pressure calculated using the Friedel method. The error is less than 10%, which verifies the accuracy of the numerical simulation results. By analyzing non-uniformity distribution of the flow field caused by secondary circulation in different elbows, the simulation model was established to search for distribution of water vapor condensation in pipelines. The results show that the condensate distributions of water vapor in the elbow are non-uniform and mainly focus on the downstream of the inner elbow. Under the same conditions of flow rate and temperature difference of the inner and outer wall, condensation distribution in liquid phase on the inside elbow was compared at four different elbow angles such as 15°, 30°, 45° and 60°. The results indicate that maximum and minimum condensed vapor are separately generated at 15° and 60° elbow which can provide theoretical references for reducing the corrosion of natural gas pipelines.

40 citations


Cites methods from "Flow and thermal characteristics of..."

  • ...The experimental test [2-4], CFD numerical simulation [5-8], PIV flow field observation [9-11] and other methods are adopted to study the emitter....

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Journal ArticleDOI
TL;DR: In this paper, the authors review the state-of-the-art jet impingement designs applied for power electronics cooling, as well as review future jet-impingement technology.
Abstract: Effective thermal management of power electronics in electric vehicles is essential for reliability and increased power density. Currently, traditional cooling technologies such as cold plates and heat sinks have been utilized by the automotive industry. As the next generation of power electronics implements wide-bandgap devices, however, increased heat fluxes will require more advanced cooling strategies. Recently, jet impingement has gained attention as an advanced cooling technique for power electronics due to its proven thermal performance in high-heat-flux applications. This article aims to review the state-of-the-art jet impingement designs applied for power electronics cooling, as well as review future jet impingement technology. Important factors for widespread implementation such as heat transfer, pressure drop, and reliability are discussed, along with the current technical gaps and challenges for jet impingement research in electrified transportation.

37 citations


Cites background or methods from "Flow and thermal characteristics of..."

  • ...Numerical methods are often used to verify the results computed using analytical methods, and Shukla and Dewan [66] go in-depth in reviewing the types and effects of using different computational methods....

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  • ...[66] A. K. Shukla and A. Dewan, “Flow and thermal characteristics of jet impingement: Comprehensive review,” Int....

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  • ...Zuckerman and Lior [48] discuss the physics of the three jets above, while the regions of jet impingement are further outlined in [56], [66], and [67]....

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  • ...are often used to verify the results computed using analytical methods, and Shukla and Dewan [66] go in-depth in reviewing the types and effects of using different computational methods....

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Journal ArticleDOI
TL;DR: In contrast to pool boiling, flow boiling heat transfer is a more applied mode of heat transfer and has been most widely used in high heat flux cooling systems as mentioned in this paper, and there are two general approaches for improving Flow Boiling heat transfer: active and passive methods.

37 citations

References
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Book
01 Jan 1993
TL;DR: In this paper, the authors proposed a compressible ecoulement for compressible ECCs, based on the disquette reference record created on 2005-11-18, modified on 2016-08-08.
Abstract: Keywords: ecoulement : compressible Note: + disquette Reference Record created on 2005-11-18, modified on 2016-08-08

7,023 citations


"Flow and thermal characteristics of..." refers background or methods in this paper

  • ...Also, small eddies have nearly-universal characteristics and therefore are easy to model (Wilcox [84])....

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  • ...Readers are referred to any book or paper for details on turbulence model used in the literatures, such as [30, 83, 84]....

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Journal ArticleDOI
TL;DR: In this article, the authors derived a correlation for the Nusselt number of the form suggested by this evidence using a selection of the data and showed that this exponent should be a function of nozzle-to-plate spacing and of the radial displacement from the stagnation point.

1,030 citations


"Flow and thermal characteristics of..." refers background in this paper

  • ...[71] reviewed the experimental data of heat transfer available for single circular impinging turbulent jets and considered Re in range of 5000 to 124000 and H/D 1....

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Journal ArticleDOI
R. Viskanta1
TL;DR: In this paper, heat transfer characteristics of single and multiple isothermal turbulent air and flame jets impinging on surfaces are reviewed, and the effect of crossflow on impingement heat transfer is included.

935 citations


"Flow and thermal characteristics of..." refers background in this paper

  • ...Viskanta [72] considered both slot and circular jets and effect of cross flow on jet impingement heat transfer....

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Book ChapterDOI
TL;DR: In this article, a review of recent impinging jet research publications identified a series of engineering research tasks that are important for improving the design and resulting performance of impinging jets: (1) clearly resolve the physical mechanisms by which multiple peaks occur in the transfer coefficient profiles, and clarify which mechanism(s) dominate in various geometries and Reynolds number regimes.
Abstract: Publisher Summary This chapter presents a discussion on jet impingement heat transfer. The chapter describes the applications and physics of the flow and heat transfer phenomena, available empirical correlations and values they predict, and numerical simulation techniques and results of impinging jet devices for heat transfer. The relative strengths and drawbacks of the Reynolds stress model, algebraic stress models, shear stress transport, and v 2 f turbulence models for impinging jet flow and heat transfer are compared in the chapter. The chapter provides select model equations as well as quantitative assessments of model errors and judgments of model suitability. The review of recent impinging jet research publications identified a series of engineering research tasks that are important for improving the design and resulting performance of impinging jets: (1) clearly resolve the physical mechanisms by which multiple peaks occur in the transfer coefficient profiles, and clarify which mechanism(s) dominate in various geometries and Reynolds number regimes, (2) develop a turbulence model, and associated wall treatment if necessary, that reliably and efficiently provides time-averaged transfer coefficients, (3) develop alternate nozzle and installation geometries that provide higher efficiency, meaning improved Nu profiles at either a set flow or set blower power, and (4) further explore the effects of jet interference in jet array geometries, both experimentally and numerically. This includes improved design of exit pathways for spent flow in array installations.

693 citations


"Flow and thermal characteristics of..." refers background in this paper

  • ...Zuckerman and Lior [20] described the physics, correlations and numerical simulation techniques for jet impingement heat transfer....

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  • ...This behavior may change the heat transfer and flow features of jet impingement on a surface and it depends on the frequency of flow pulsation, Re and other dimensions [20]....

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  • ...This effect needs to be analyzed in details [20]....

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  • ...Jet impingement on a rib fitted target surface disrupts the wall jet and thus level of turbulence and heat transfer are expected to increase [20]....

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  • ...Zukerman and Lior [73] carried out a concise review of accuracy and shortcomings associated with numerical methods used to predict flow field and heat transfer characteristics of jet impingement and showed that k-ε, k-ω, ASM and RSM models provided poor results compared to experimental data even with high resolution grids....

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Journal ArticleDOI
TL;DR: In this paper, it was shown that some seemingly anomalous heat transfer phenomena can be explained as effects of the intense and spatially varying turbulence inherent in jets, which can be used to explain the heat transfer properties of impinging jets.

608 citations


"Flow and thermal characteristics of..." refers background in this paper

  • ...[8] showed that in case of impinging jets, the heat transfer properties cannot be understood with velocity and position dependent boundary-layer thickness only....

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