Numerical simulation of the heat transfer from a heated plate with surface variations to an impinging jet

Ortega-Casanova, J.; Granados-Ortiz, Francisco-Javier

doi:10.1016/j.ijheatmasstransfer.2014.04.022

Cited by 46 publications

(39 citation statements)

References 20 publications

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“…The chosen turbulence model was the SST k − ω one, which provides a heat transfer result that fits very well with the experiments of [11] and [12]. A full description of this choice and the mesh can be found in [5].…”

Section: Cfd Simulations Of the Heat Transfer From A Heated Solid Flamentioning

confidence: 93%

“…In the present problem, the Reynolds number under study is Re = 23000, as studied in [5], and the Swirl number is S = 1. For this situation, where the inflow is laminar flow water, the mean values of our uncertain parameters areQ = 0.000361273 m 3 /s andΩ = 115 rad/s.…”

Section: Stochastic Collocation Methodsmentioning

confidence: 99%

“…Impinging jets for heat transfer have an extensive number of applications, as explained in section 1. The efficacy of the heat transfer will depend on different factors, such as the H/D distance, configuration of the jet or the surface of the plate [5]. Here, we are going to rely only on the configuration of the jet by controlling the angular velocity of the duct and the volumeflow rate as explained in section 2.1.…”

Section: Cfd Simulations Of the Heat Transfer From A Heated Solid Flamentioning

confidence: 99%

“…8. For further information about the computational features of the simulation, including the discretization error and the selection of the SST k − ω turbulence model, the authors suggest to see [5]. The uncertainties are propagated and they have an impact on the evolution of the Nusselt number along the plate.…”

Section: Uncertainty Quantification Of the Turbulent Swirling Jetmentioning

confidence: 99%

“…The use of CFD softwares to model the behaviour of swirling flows is nowadays possible and it has become a deterministic way to simulate the physics of complex flows. The application of impinging jets to heat transfer purposes is also a very well-known mechanism to achieve an appropriate cooling in electronic components [3] & [4], surface varied plates [5] or impinging gases and flame jets [6] & [7], among others. In the case under study, the impinging swirling jet is generated by a rotating pipe long enough to have a fully developed turbulent rotating flow at the end.…”

Section: Introductionmentioning

confidence: 99%

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Uncertainty Quantification and Modelling of CFD Simulations of a Swirling Turbulent Jet Created by a Rotating Pipe for Application to Heat Transfer From a Heated Solid Flat Plate

Granados-Ortiz¹,

Ortega-Casanova²,

Chen³

2015

Proceedings of the 1st International Conference on Uncertainty Quantification in Computational Sciences and Engineering (UNCECO

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Swirling turbulent flows created by the rotation of pipes and applications for heat transfer can have interesting industrial purposes. As such physical phenomenon is under some physical uncertainties, it is interesting to understand their impact on the relevant parameters. In the present paper, the Stochastic Collocation method with Sparse Grids is developed, in order to study how the uncertainties are propagated from the Computational Fluid Dynamics (CFD) simulations of a Swirling jet created by the rotation of a pipe to the CFD simulations of the heat transfer from a flat plate by the impingement of the generated swirling jet. In addition, some mathematical models for the velocity profile and turbulent parameters are given, and their uncertainties studied, in order to facilitate this two-step process for industrial applications.

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Section: Cfd Simulations Of the Heat Transfer From A Heated Solid Flamentioning

confidence: 93%

Section: Stochastic Collocation Methodsmentioning

confidence: 99%

Section: Cfd Simulations Of the Heat Transfer From A Heated Solid Flamentioning

confidence: 99%

Section: Uncertainty Quantification Of the Turbulent Swirling Jetmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Uncertainty Quantification and Modelling of CFD Simulations of a Swirling Turbulent Jet Created by a Rotating Pipe for Application to Heat Transfer From a Heated Solid Flat Plate

Granados-Ortiz¹,

Ortega-Casanova²,

Chen³

2015

Proceedings of the 1st International Conference on Uncertainty Quantification in Computational Sciences and Engineering (UNCECO

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Study of the Effect of Initial Plate Temperature in Jet Impingement Cooling Process

Gadala,

Gomaa,

Aslam

2024

steel research int.

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The microstructure characteristics and the properties of rolled steels are significantly affected by the heat transfer and boiling phenomena occurring during the jet impingement cooling on run‐out tables (ROT). In this study, experiments are conducted using a full industrial‐scale ROT facility with rectangular plates made of low‐carbon stainless steel (type 316L). The plate is heated up to a temperature ranging from to , then rapidly impinged using a single circular water jet, and the temperature drop is captured using an infrared thermal camera (FLIR A615 25°–50 Hz type). The dissipated heat flux, estimated experimentally using a 2D inverse heat conduction analysis, ranges from 6.1 to 3.4 MW m−2 across different zones along the plate surface. The impact of different initial plate temperature on the boiling behavior is studied by developing a 2D‐computational fluid dynamics (CFD) model, and the results are closely aligned with the experimental findings. The results reveal that when estimating the heat flux from CFD simulations, the best accuracy is obtained when considering fluid temperature at a point close to the plate surface (about 1 μm above the surface). Furthermore, the maximum extracted heat flux (MHF) is significantly influenced by the initial temperature of the plate. Increasing the initial plate temperature from 500 to 900 °C led to an increase of 82% in the MHF in stagnation zone, and 137% increase in the parallel‐flow region. The CFD model presented in this study and the full calculation of the boiling curves numerically will pave the road for investigating various practical parameters in jet impingement cooling.

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Numerical Analysis of Single Jet Impinging a Flat and Non-flat Plate

Barbosa

Teixeira

2020

Computational Science and Its Applications – ICCSA 2020

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The complexity of the flow field and heat transfer in jet impingement has led to several studies in order to increase the processes and products performance. Jet impingement is widely implemented, since it ensures high average heat transfer coefficients and the uniformity of the temperature over the target surface. However, the flow generated depends on several parameters related to the jet flow, such as jet velocity and temperature, and the target plate geometry. Complex impinging surfaces are identified in the majority of the applications, such as reflow soldering and cooling of turbines or solar systems. To increase the process efficiency, it is important to fully understand the interactions between the jet and the target surface. Considering the interest of this field, the present study is conducted to investigate the influence of the target surface on heat transfer in a single jet impingement process. To minimize the number of experiments, decreasing time and costs, the implementation of numerical tools is fundamental. In that sense, the impingement of the hot air jet over a flat and non-flat plate was predicted numerically using the ANSYS FLUENT software. The velocity and temperature profile were analyzed and the Nusselt number were compared for both cases. The results show the complexity of the flow generated in the vicinity of the step and the changes of the jet flow structure when it impinges a complex surface.

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Numerical simulation of the heat transfer from a heated plate with surface variations to an impinging jet

Cited by 46 publications

References 20 publications

Uncertainty Quantification and Modelling of CFD Simulations of a Swirling Turbulent Jet Created by a Rotating Pipe for Application to Heat Transfer From a Heated Solid Flat Plate

Uncertainty Quantification and Modelling of CFD Simulations of a Swirling Turbulent Jet Created by a Rotating Pipe for Application to Heat Transfer From a Heated Solid Flat Plate

Study of the Effect of Initial Plate Temperature in Jet Impingement Cooling Process

Numerical Analysis of Single Jet Impinging a Flat and Non-flat Plate

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