Measurement of detailed heat transfer on a surface under arrays of impinging elliptic jets by a transient liquid crystal technique

Yan, Wei‐Mon; Mei, Sheng-Chin; Liu, H.C.; Soong, Chyi–Yeou; Yang, Wen‐Jei

doi:10.1016/j.ijheatmasstransfer.2004.06.031

Cited by 50 publications

(16 citation statements)

References 25 publications

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“…On the other hand, at large gap distances, the effect of cross-flow was weak and the distributions and levels of heat/mass transfer coefficients were similar for both cases. Yan et al [7] examined the heat transfer on a flat surface under arrays of impinging elliptic jets with different aspect ratios and exit flow conditions using a transient liquid crystal technique. They observed that both aspect ratio and cross-flow significantly influenced the axial shift of the impingement/touchdown locations.…”

Section: Introductionmentioning

confidence: 99%

Local heat transfer characteristics of array impinging jets from elongated orifices

Nuntadusit

Wae-hayee

Tekasakul

et al. 2012

International Communications in Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 99%

Local heat transfer characteristics of array impinging jets from elongated orifices

Nuntadusit

Wae-hayee

Tekasakul

et al. 2012

International Communications in Heat and Mass Transfer

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“…The cross-flow has an adverse effect on the heat transfer on the impinging surface. The cross-flow effect must be minimized in order to achieve effective heat transfer [5][6][7]. Nuntadusit C and Sarkar A et al [8,9] used oil film technique to visualize the impinging surface flow.…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Orifice Structure on Heat Transfer Characteristics of Steel Strip Surface in an Air Impinging Freezer

Liu¹,

Wang²,

Xie³

2018

dtcse

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Abstract. In this paper, the fluid field in an air impinging freezing experimental table was studied by computational fluid dynamics (CFD) numerical simulation technology. The influence of the different diameter D and orifice spacing distance S on the heat transfer characteristics on the steel strip surface were analyzed, and the difference of the heat transfer effect between the orifice and slit nozzle were compared. The results show that when the orifice diameter is less, the heat transfer coefficient on the steel strip surface is less due to the effect of cross-flow. With the orifice diameter is increased, the effect of the resistance along the upstream is increased. The average Nusselt number on the steel strip surface is the highest at D=10mm. When the spacing distance is less, the distance between the first row of orifice nozzle in the upstream and the adhering wall is less and the velocity of flow is less. With the increased of spacing distance, the distance between the first row of orifice nozzle in the upstream and the last in the downstream is increased, and the effect of cross-flow is increased. The average Nusselt number on the steel strip surface is the highest at S=34mm.The effect of cross-flow under the slit nozzles is weak and the food can be better protected. The average Nusselt number on the steel strip surface under the orifice nozzles is 9.7% higher than that of the slit nozzle.

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“…Yan et al [30] have studied the heat transfer of a flat plate under various jet geometry and air flow velocity. In that study, the optimal performance appeared at different aspect ratio depending on Reynolds number.…”

Section: Introductionmentioning

confidence: 99%

“…The main objective of this study is to investigate the detailed heat transfer coefficient distributions over a film hole surface under impingement of in-line elliptic jet arrays using a transient liquid crystal technique. This technique had been used to study the heat transfer of plane surface with jet array [30]. In that study, the optimal performance appeared at different aspect ratio depending on Reynolds number.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental study on the heat transfer under impinging elliptic jet array along a film hole surface using liquid crystal thermograph

Chiu¹,

Jang

Yan

2009

International Journal of Heat and Mass Transfer

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Measurement of detailed heat transfer on a surface under arrays of impinging elliptic jets by a transient liquid crystal technique

Cited by 50 publications

References 25 publications

Local heat transfer characteristics of array impinging jets from elongated orifices

Local heat transfer characteristics of array impinging jets from elongated orifices

Effects of Different Orifice Structure on Heat Transfer Characteristics of Steel Strip Surface in an Air Impinging Freezer

Experimental study on the heat transfer under impinging elliptic jet array along a film hole surface using liquid crystal thermograph

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