Experimental study and theoretical analysis of local heat transfer distribution between smooth flat surface and impinging air jet from a circular straight pipe nozzle

Katti, Vadiraj; Prabhu, S.V.

doi:10.1016/j.ijheatmasstransfer.2007.12.024

Cited by 276 publications

(193 citation statements)

References 21 publications

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“…where λ is the thermal conductivity of the fluid (air) and they are presented on Figure 4 in comparison with other literature data [12,14,16]. The measured data do not agree very well with the literature data.…”

Section: Resultsmentioning

confidence: 67%

“…Experimental data in the literature describing the heat transfer for impinging jets on a flat plate can show relatively large scatter (20 − 30%), see data [10][11][12][13][14][15][16] . The discrepancies in the available data can lie in slightly different geometrical configurations, boundary conditions, as well as in the experimental method itself and its accuracy.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…A stream of fluid impinging the plate heated by Joule's heat leads to a nonuniform temperature field at the plate surface which can be measured by the infrared thermography and consequently, the local heat transfer coefficients can be determined, see [16], for example. The infrared thermography was also used by Freund in his work [22] to measure the temperature response of the plate induced by an oscillating heat flux impinging the plate.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…Formally same equation as (16) and same definition (15) for diffusivity coefficient Γ i j can be obtained for temperature as the user-defined scalar, that is φ = T . Some differences should appear only in the definition of boundary conditions, see [28] for more details.…”

Section: Numerical Simulationsmentioning

confidence: 99%

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Heat transfer measurements and CFD simulations of an impinging jet

Petera

Dostál

2016

EPJ Web of Conferences

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Abstract. Heat transport in impinging jets makes a part of many experimental and numerical studies because some similarities can be identified between a pure impingement jet and industrial processes like, for example, the heat transfer at the bottom of an agitated vessel. In this paper, experimental results based on measuring the response to heat flux oscillations applied to the heat transfer surface are compared with CFD simulations. The computational cost of a LES-based approach is usually too high therefore a comparison with less computationally expensive RANS-based turbulence models is made in this paper and a possible improvement of implementing an anisotropic explicit algebraic model for the turbulent heat flux model is evaluated.

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Section: Resultsmentioning

confidence: 67%

Section: Experimental Methodsmentioning

confidence: 99%

Section: Experimental Methodsmentioning

confidence: 99%

Section: Numerical Simulationsmentioning

confidence: 99%

See 2 more Smart Citations

Heat transfer measurements and CFD simulations of an impinging jet

Petera

Dostál

2016

EPJ Web of Conferences

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“…Katti and Prabhu [4] measured the jet impinging perpendicularly the target plate (80×160 mm) made of stainless steel foil with thickness 0.06 mm. Air was supplied by an compressor through a calibrated orifice flow meter and was cooled to the required temperature.…”

Section: Validationmentioning

confidence: 99%

Heat transfer measurements with TOIRT method

et al. 2017

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Abstract. Temperature Oscillation Infra-Red Thermography (TOIRT) method was used to measure heat transfer coefficients between a flat surface and a confined impinging jet generated by an impeller in a difusor and baffled vessel. The TOIRT method is based on measuring a phase-lag between the oscillating heat flux applied to the heat transfer surface and the surface temperature response using a contactless infra-red camera. The phase lag is in a direct relationship with the heat transfer coefficient.

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Stagnation Region Heat Transfer of Axisymmetric Impinging Jets on Solid Surfaces

2015

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A theoretical model is proposed to evaluate the heat transfer characteristics of axisymmetric impinging fluid jets on the horizontal hot surface in the stagnation region using the energy integral method. A generalized expression involving various modeling parameters such as Nusselt number, nozzle‐to‐plate distance, Prandtl number, Reynolds number, and the modeling parameter k is obtained from the analysis. Present predictions are found to agree well with the test data involving a wide range of coolant type, Reynolds number, and nozzle‐to‐plate distance. In addition, a mechanistic correlation is suggested between the modeling parameter k and flow parameter, i.e., Reynolds number.

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Experimental study and theoretical analysis of local heat transfer distribution between smooth flat surface and impinging air jet from a circular straight pipe nozzle

Cited by 276 publications

References 21 publications

Heat transfer measurements and CFD simulations of an impinging jet

Heat transfer measurements and CFD simulations of an impinging jet

Heat transfer measurements with TOIRT method

Stagnation Region Heat Transfer of Axisymmetric Impinging Jets on Solid Surfaces

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