The present numerical work concentrates on thermo-fluid characteristics of a moving heated strip in the manufacturing industry under thermal management. The cooling tower installed in the galvanizing line of metal strip manufacturing. The metal strip is moving with a velocity of 1.5 m/s, and its temperature is 660 °C. The numerical simulations are carried out for different jet-to-wall distances (H/D = 5.5–2) and jet velocities (55, 65, and 75 m/s) with moving metal strip. The industrial cooler model in manufacturing steel strip has been applied to the numerical modeling. The jet impingement with 78 circular nozzles are used for thermal management. The results are reported in terms of heat transfer coefficient and pressure drop. Further, the analysis is focused on increasing the heat transfer rate with minimum pumping power of nozzles. Turbulence modeling has received special attention. The study reveals that the impinging heat transfer rate at H/D equal to 2.78 is maximum with minimum pumping power.

错误:搜索内容不能为空,请输入英文关键词
错误:关键词超出字数限制,请精简
高级检索

Numerical Analysis of Jet Impingement Heat Transfer Process on Steel Band for Industrial Galvanizing Line

  • Alok Raj,
  • Y. Naresh

摘要

The present numerical work concentrates on thermo-fluid characteristics of a moving heated strip in the manufacturing industry under thermal management. The cooling tower installed in the galvanizing line of metal strip manufacturing. The metal strip is moving with a velocity of 1.5 m/s, and its temperature is 660 °C. The numerical simulations are carried out for different jet-to-wall distances (H/D = 5.5–2) and jet velocities (55, 65, and 75 m/s) with moving metal strip. The industrial cooler model in manufacturing steel strip has been applied to the numerical modeling. The jet impingement with 78 circular nozzles are used for thermal management. The results are reported in terms of heat transfer coefficient and pressure drop. Further, the analysis is focused on increasing the heat transfer rate with minimum pumping power of nozzles. Turbulence modeling has received special attention. The study reveals that the impinging heat transfer rate at H/D equal to 2.78 is maximum with minimum pumping power.