Analysis of Heat Transfer Between the Gas Torch and the Plate For the Application of Line Heating
Author:
Shin Jong Gye1, Woo Jong Hun2
Affiliation:
1. Dept. of Naval Architecture and Ocean Engineering, Research Institute of Marine Systems Engineering, Seoul National University, Seoul, 151-744 Korea 2. Dept. of Naval Architecture and Ocean Engineering, Seoul National University, Seoul, 151-744 Korea
Abstract
Line heating (LH) is a method of forming curved thick plates. Residual deformation of a steel plate is obtained by applying heat to the plate. Heat transfer analysis between a torch and the steel plate is essential to control the residual deformation of the steel plate in LH. This paper presents an analysis of the heat transfer during LH. The mechanism of combustion flame from a torch is simplified as an impinging gas jet. A turbulent thermal fluid flow analysis is employed to determine the temperature field. Results of numerical and experimental approaches are compared to verify the proposed analysis procedure. The parametric analysis shows that the nozzle diameter and the tip clearance are the important factors of the heat flux induced by the flame.
Publisher
ASME International
Subject
Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Control and Systems Engineering
Reference11 articles.
1. Shin, J. G., and Moshaiov, A., 1991, “Modified Strip Model for Analyzing the Line Heating Method-Part 1: Elastic Plates,” J. Ship Res., 35(2), pp. 172–182. 2. Ueda, Y., Murakawa, H., Rashwan, A. M., Neki, I., Kamachika, R., Ishiyama, M., and Ogawa, J., 1993, “Development of Computer Aided Process for Plate Bending by Line-Heating (3rd Report) Relation Between Heating Condition and Deformations,” Journal of the Society of Naval Architects of Japan, 173, pp. 409–418. 3. Shin, J. G., and Lee, J. H., 2000, “Non-Dimensionalized Relationship Between Heating Conditions and Final Deformations in Line Heating Process,” submitted to the J. Ship Res. 4. Moshaiov, A., and Latorre, R., 1985, “Temperature Distribution During Plate Bending by Torch Flame Heating,” J. Ship Res., 29(1), pp. 1–11. 5. Tomita, Y., Hasimoto, K., Osawa, N., Fukuda, Y., Kozuki, Y., and Wakita, H., 1995, “Studies on the Expert System of Bending Work Using Line Heating,” Journal of Kansai Society of Naval Architects, Japan, 224, pp. 121–130.
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