Nozzle Design of Hot Strip Steel Temperature Measurement Device and Analysis of its Flow Field Characteristics

Shui Xuan Chen, Gang Lu, Jian Min Xu*
School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen 361024, China

© 2014 Chen et al

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: ( This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Mechanical and automotive Engineering, Xiamen University of Technology, Xiamen, 361024, P.R. China; Tel: 13459263068;


A kind of new hot strip steel temperature measuring device has been designed. The mathematical model and the geometric model of the nozzle flow field have been established based on computational fluid dynamics theory. The impact of equalizing groove and nozzle structure on the nozzle system characteristics is researched in detail using fluid dynamics software FLUENT. The research results show that: the nozzle pressure groove can improve the gas flow properties of the nozzle and the nozzle can meet the design requirements. The nozzle gap, the inlet pressure of nozzle, the lower edge diameter of the nozzle, nozzle diameter and chamfer structure have different effects on flow field characteristics and nozzle flow. The study provides a theoretical basis for designing hot strip steel temperature measurement devices and the nozzle of purge.

Keywords: Hot strip temperature measuring device, computational fluid dynamics, nozzle, flow field characteristics.