摘要
通过对水火弯板温度分布的实验数据及数值计算结果的分析 ,认为在加热线垂直于板边且从板边开始加热的条件下 ,在垂直于板厚方向的各截面上的温度分布具有相似性 ,在同一截面上垂直于加热线方向的各直线上的温度分布具有相似性 ,进而根据这些相似性讨论了水火弯板温度场的半解析解的基本形式。
The similarity regularities in temperature field during line heating are analyzed and the semi analytical solution of quasi steady temperature field of line heating is proposed. Generally, two types of methods are employed in studying line heating temperature field, i.e., experimental measurement method and numerical simulation method. Comparison shows that the numerical simulation results are in good agreement with the experimental results. Thus, line heating temperature field can be studied with the combination of experimental results and numerical simulation results. In experiments, the tempe rature distribution on the top plate surface, with heating line perpendicular to the plate edge and heating starting from the edge, is measured with infrared thermograph equipment when the temperature distribution becomes steady. For the temperature distribution on the lines perpendicular to the heating line on the top surface, defining dimensionless temperature parameter T and dimensionless width parameter η, the T η cruves of the lines are overlapped, i.e., the temperature distribution on each line is simliar, and can be described by the same kind of functions. For the numerical si mulation results of temperature distribution on the plate when temperature becomes steady, dimensionless ana lysis shows that on planes perpendicular to plate thickness direction, the same similarity regularities as on the top surface exist, the temperature field on these planes can be described by the same kind of functions as on the top surface. For the highest temperature distribution on planes perpendicular to the plate thickness direction, the T η curves of planes are overlapped too. Then, the highest temperature distribution on each plane is simliar, and can be described by the same function. Thus, by similarity analysis, functions are obtained, and finally semi analytical solution of quasi steady temperature field is developed.
出处
《中国造船》
EI
CSCD
北大核心
2002年第1期88-94,共7页
Shipbuilding of China
