Large-Eddy Simulation of a Tunnel Ventilation Fan

Borello, Domenico; Corsini, Alessandro; Delibra, Giovanni; Fiorito, Mario; Sheard, Anthony G.

doi:10.1115/1.4023686

Cited by 14 publications

(25 citation statements)

References 31 publications

(34 reference statements)

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“…RANS is the most suitable approach for analyzing the equipment heat transfer. Domenico Borello [2] states that for obtaining high and low pressure eddies in a flow Large Eddie Simulation (LES) is used. LES allow predicting the pressure rise capability of the fan and can reproduce the flow features.…”

Section: Literature Reviewmentioning

confidence: 99%

Experimental and numerical investigation of heat dissipation from an electronic component in a closed enclosure

George¹,

Ajmal²,

Deepu³

et al. 2018

MATEC Web Conf.

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Abstract.Intensifying electronic component power dissipation levels, shortening product design cycle times, and greater than before requirement for more compact and reliable electronic systems with greater functionality, has heightened the need for thermal design tools that enable accurate solutions to be generated and quickly assessed. The present numerical study aims at developing a computational tool in OpenFOAM that can predict the heat dissipation rate and temperature profile of any electronic component in operation. A suitable computational domain with defined aspect ratio is chosen. For analyzing, "buoyant Boussinesq Simple Foam" solver available with OpenFOAM is used. It was modified for adapting to the investigation with specified initial and boundary conditions. The experimental setup was made with the dimensions taken up for numerical study. Thermocouples were calibrated and placed in specified locations. For different heat input, the temperatures are noted down at steady state and compared with results from the numerical study.

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Section: Literature Reviewmentioning

confidence: 99%

Experimental and numerical investigation of heat dissipation from an electronic component in a closed enclosure

George¹,

Ajmal²,

Deepu³

et al. 2018

MATEC Web Conf.

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show abstract

“…For analysis buoyantBoussinesqSimpleFoam solver available with OpenFOAM is used. The mass conservation is given by the equation 1The momentum conservation is given by the equation (2) The density ρ in the gravitational term is expressed by the linear function of the temperature,T…”

Section: Numerical Analysismentioning

confidence: 99%

Experimental and numerical investigation of heat dissipation from an electronic component in a closed enclosure

George¹,

Ajmal²,

Deepu³

et al. 2018

MATEC Web Conf.

View full text Add to dashboard Cite

Intensifying electronic component power dissipation levels, shortening product design cycle times, and greater than before requirement for more compact and reliable electronic systems with greater functionality, has heightened the need for thermal design tools that enable accurate solutions to be generated and quickly assessed. The present numerical study aims at developing a computational tool in OpenFOAM that can predict the heat dissipation rate and temperature profile of any electronic component in operation. A suitable computational domain with defined aspect ratio is chosen. For analyzing, “buoyant Boussinesq Simple Foam“ solver available with OpenFOAM is used. It was modified for adapting to the investigation with specified initial and boundary conditions. The experimental setup was made with the dimensions taken up for numerical study. Thermocouples were calibrated and placed in specified locations. For different heat input, the temperatures are noted down at steady state and compared with results from the numerical study.

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“…Finally, Davidson [86] noted that a theoretically possible hybrid approach would be to use low-resolution grids coupled with advanced subgrid scale models. Borello et al [41] were able to demonstrate the potential of this approach by incorporating a subgrid scale model sensitive to each grid cell's size. Using this approach, Borello et al [41] were able to recover part of the turbulence spectrum that is lost with As Borello et al 's methodology [41] is inherently unsteady, they were able to utilise it to study the effects of train induced pressure pulses on tunnel ventilation fans.…”

Section: Future Trendsmentioning

confidence: 99%

“…Borello et al [41] were able to demonstrate the potential of this approach by incorporating a subgrid scale model sensitive to each grid cell's size. Using this approach, Borello et al [41] were able to recover part of the turbulence spectrum that is lost with As Borello et al 's methodology [41] is inherently unsteady, they were able to utilise it to study the effects of train induced pressure pulses on tunnel ventilation fans. Borello et al [41] concluded that the quasi-instantaneous changes of the operating conditions did not influence predicted large-scale turbulent structures.…”

Section: Future Trendsmentioning

confidence: 99%

“…Using this approach, Borello et al [41] were able to recover part of the turbulence spectrum that is lost with As Borello et al 's methodology [41] is inherently unsteady, they were able to utilise it to study the effects of train induced pressure pulses on tunnel ventilation fans. Borello et al [41] concluded that the quasi-instantaneous changes of the operating conditions did not influence predicted large-scale turbulent structures. In contrast, the operating condition's quasi-instantaneous changes did impact small scale turbulent structures ( Figure 10).…”

Section: Future Trendsmentioning

confidence: 99%

See 1 more Smart Citation

A Critical Review of Computational Methods and Their Application in Industrial Fan Design

Corsini

Delibra

Sheard³

2013

ISRN Mechanical Engineering

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Members of the aerospace fan community have systematically developed computational methods over the last five decades. The complexity of the developed methods and the difficulty associated with their practical application ensured that, although commercial computational codes date back to the 1980s, they were not fully exploited by industrial fan designers until the beginning of the 2000s. The application of commercial codes proved to be problematic as, unlike aerospace fans, industrial fans include electrical motors and other components from which the flow will invariably separate. Consequently, industrial fan designers found the application of commercial codes challenging. The decade from 2000 to 2010 was focused on developing techniques that would facilitate converged solutions that predicted the fans’ performance characteristics over the stable part of their operating range with reasonable accuracy, using a practical computational effort. In this paper, we focus on elucidating aspects of the flow physics that one cannot easily study in a laboratory environment, discussing the challenges involved and the relative merits of the available modelling techniques. The paper ends with a discussion of the practical problems associated with the use of commercial codes in a development environment and finally the legislation that is driving the need for aerospace style computation methods.

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Large-Eddy Simulation of a Tunnel Ventilation Fan

Cited by 14 publications

References 31 publications

Experimental and numerical investigation of heat dissipation from an electronic component in a closed enclosure

Experimental and numerical investigation of heat dissipation from an electronic component in a closed enclosure

Experimental and numerical investigation of heat dissipation from an electronic component in a closed enclosure

A Critical Review of Computational Methods and Their Application in Industrial Fan Design

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