Numerical investigation of jet layout for annular jet cooling on a steel tube

Rui, Zhang; Zhang, Yansheng; Chen, Dong; Yuan, Guo

doi:10.1016/j.applthermaleng.2022.118825

Cited by 10 publications

(3 citation statements)

References 36 publications

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“…In this study, the limitation of jet flow by a stepped jet box and pressure roller produced complex flow and heat transfer near the wall; thus, the SST k-ω model was a valid choice. Its turbulent kinetic energy k and specific dissipation rate ω were obtained from the following transport equation [46]:…”

Section: Turbulence Model and Numerical Proceduresmentioning

confidence: 99%

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Numerical Study on the Heat Transfer of Confined Air-Jet Quenching of Steel Sheets

Ye,

Fu,

Liu

et al. 2024

Metals

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The high flatness quenching of ultra-high-strength steel sheets is a technical problem in the steel industry. In this study, the traditional water and spray quenching methods were abandoned, and the roller-constrained slot air-jet quenching method was proposed for steel sheets below 3 mm thickness, which provided a theoretical reference for producing thinner, wider, and higher-flatness steel sheets. A 2D roller-constrained slot air-jet numerical model was established to study the flow field and heat transfer characteristics under the conditions of Reynolds number 24,644–41,076, a dimensionless jet height of 16–24, and a jet angle of 45°–135°. The results showed that the average Nusselt number on the heat transfer surface was proportional to Rem. At the same time, high-intensity heat transfer was achieved when the dimensionless height and jet angle were properly combined. At the same Reynolds number, the heat transfer intensity could be increased by 289%. In addition, the position of the peak Nusselt number was affected by reducing the jet angle, which served as an effective strategy for adjusting the martensite ratio and obtaining ideal mechanical properties.

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Section: Turbulence Model and Numerical Proceduresmentioning

confidence: 99%

“…σ k , σ ω , a, and β are constants that can be calculated by Equation (9). The kinematic eddy viscosity was defined as follows [46]:…”

Section: Turbulence Model and Numerical Proceduresmentioning

confidence: 99%

Numerical Study on the Heat Transfer of Confined Air-Jet Quenching of Steel Sheets

Ye,

Fu,

Liu

et al. 2024

Metals

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“…However, it might be challenging to regulate the homogeneity of cooling. As a single jet [22] cooling capacity is limited, Multiple jets [23,24] are required to improve cooling intensity and control cooling uniformity. Numerous researchers have compared the heat transfer properties of jet impingement curved surfaces and planes based on their studies of different process factors.…”

Section: Introductionmentioning

confidence: 99%

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

Li,

Zhang,

Zhang

et al. 2023

steel research int.

Self Cite

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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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Optimal designs for flow uniformity at inlet of microchannel flat tube heat exchanger

Hou

Xu³

et al. 2023

Applied Thermal Engineering

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Numerical investigation of jet layout for annular jet cooling on a steel tube

Cited by 10 publications

References 36 publications

Numerical Study on the Heat Transfer of Confined Air-Jet Quenching of Steel Sheets

Numerical Study on the Heat Transfer of Confined Air-Jet Quenching of Steel Sheets

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

Optimal designs for flow uniformity at inlet of microchannel flat tube heat exchanger

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