Characteristics of Transient Heat Transfer and Wetting Phenomena During Laminar Jet Quenching on Rotating Cylinder

Tsuboyama, Shinya; Higashi, Tomofumi; Mitsutake, Yuichi; Illias, Suhaimi; Mazumder, A. K. M. Monayem Hossain; Tsubaki, Koutaro; Monde, Masanori

doi:10.1016/j.proeng.2015.05.072

Cited by 7 publications

(7 citation statements)

References 5 publications

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“…Result in Fig. 5(b) shows higher jet flow rate increases " at in both arrays and this is in agreement with the result of single jet experiment [16]. Temperature corresponding to MHF increases by higher Q in the 1-row array.…”

Section: Water Jet Flow Ratesupporting

confidence: 88%

“…In the study of subcooling influence on maximum local heat transfer, Fig. 6(b) shows higher ∆ increases heat flux in agreement with reported result of quenching rotary cylinder by single and 1-row arrays water jet [16,19]. Enhancement of " by higher in 2-row pitch again explains the importance of total flow rate and multiple jet configuration on the local boiling heat transfer.…”

Section: Water Jet Flow Ratesupporting

confidence: 85%

See 1 more Smart Citation

Effect of Multiple Water Impinging Jet Array on Quenching Hot Rotary Hollow Cylinders

Jahedi¹,

Moshfegh²

2020

Proceedings of the 7th International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT'20)

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Section: Water Jet Flow Ratesupporting

confidence: 88%

Section: Water Jet Flow Ratesupporting

confidence: 85%

Effect of Multiple Water Impinging Jet Array on Quenching Hot Rotary Hollow Cylinders

Jahedi¹,

Moshfegh²

2020

Proceedings of the 7th International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT'20)

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“…Result in Fig. 10(b) shows higher jet flow rate increases " at in both arrays and this is in agreement with the result of single jet experiment [16]. Temperature corresponding to MHF increases by higher Q in the 1-row array.…”

Section: Water Jet Flow Ratesupporting

confidence: 86%

“…In the study of subcooling influence on maximum local heat transfer, Fig. 11(b) shows higher ∆ increases heat flux in agreement with reported result of quenching rotary cylinder by single and 1-row arrays water jet [16,19]. Enhancement of " by higher in 2-row pitch again explains the importance of total flow rate and multiple jet configuration on the local boiling heat transfer.…”

Section: Water Jet Flow Ratesupporting

confidence: 84%

“…This characteristic leads to cyclic fluctuation of heat flux depending on rotation speed of cylinder and its footprint is found in the boiling curve [14,15]. The similarity between growth of wetted region and wetting front over rotary cylinder and moving flat surface is the hydraulic jump on one side and stretched wetted and wetting front regions in the moving direction [16,17].…”

Section: Introductionmentioning

confidence: 99%

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Quenching Hot Rotary Hollow Cylinder by 1-row and 2-row Water Impinging Jet Array

Jahedi¹,

Moshfegh²

2021

JFFHMT

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Experimental study has been carried out to investigate transient quenching of rotary hollow cylinder by subcooled water impinging jets (∆ = 55-85K) in 1-row and 2-row inline array. The flow rate of water jets varied from 2.7 to 10.9 L/min, impinging on hot rotary cylinder (=600℃) with rotation speed 10-50 rpm and different curvature ratio (/d = 12, 19 and 24). The local average and maximum boiling heat transfer at water jet's stagnation point revealed effect of studied quenching parameters and multiple jet arrays in the boiling heat transfer. The result showed among the studied parameters, jet's flow rate and curvature ratio influenced heat transfer in all the boiling regimes. Rotation speed was effective in film and transition boiling regime and strong effect of subcooling was captured in the transition boiling regime. The characteristics of maximum heat flux point in the boiling curve were found to be dependent on the studied quenching parameters as well as array of nozzles. Multiple jet arrays had effect on the spatial variation and rate of boiling heat transfer on quenching surface. The heat transfer enhancement by larger number of rows, i.e. 2row array, was studied based on two approaches of constant single jet's flow rate and array's total flow rate. The result shown better heat transfer performance is achieved by increasing number of row in the array while the total flow rate is constant. It was found that by impinging constant water flow rate into the jets, 2-row array with twice the number of impinging jets enhanced heat transfer significantly in film and transition boiling regime in combination with other quenching parameters.

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Analysis of Cooling Characteristics of Jet Impingement Hot‐Rolled Seamless Steel Tube in Motion

Li,

Zhang,

Zhang

et al. 2023

steel research int.

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This research uses numerical modeling to study the jet cooling properties of hot‐rolled seamless steel tubes under axial movement and circumferential rotation. The orthogonal test is used to examine the effects of axial velocity V, rotation speed R, jet distance S, and jet Reynolds number Re on the surface temperature distribution of steel tubes. The findings demonstrate that the temperature of the steel tube exhibits a “similar sinusoidal function” distribution along the circumference, with various angular frequencies and starting phases as a result of various cooling sites. It is determined that the axial velocity has the greatest influence on the temperature drop during the cooling process of steel tube, followed by the jet Reynolds number, the jet distance, and the rotation speed. When the axial velocity is 0.3–0.7 m s−1, the rotation speed is 30–45 rpm, the jet distance is 75–100 mm, and the jet Reynolds number is 38 000–51 000, the steel tube cooling efficiency is the best. The mathematical models of temperature drop ΔT and axial velocity V, rotation speed R, jet distance S, and Reynolds number Re are established. The maximum deviation of temperature drop between numerical simulation and mathematical model is only 1.02 °C with high prediction accuracy.

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Characteristics of Transient Heat Transfer and Wetting Phenomena During Laminar Jet Quenching on Rotating Cylinder

Cited by 7 publications

References 5 publications

Effect of Multiple Water Impinging Jet Array on Quenching Hot Rotary Hollow Cylinders

Effect of Multiple Water Impinging Jet Array on Quenching Hot Rotary Hollow Cylinders

Quenching Hot Rotary Hollow Cylinder by 1-row and 2-row Water Impinging Jet Array

Analysis of Cooling Characteristics of Jet Impingement Hot‐Rolled Seamless Steel Tube in Motion

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