工程科学学报2017，Vol.39Issue(9)：1339-1346,8.DOI:10.13374/j.issn2095-9389.2017.09.006
特厚钢板阵列射流淬火的表面换热
Surface heat transfer of jet array impingement quenching for ultra-heavy plate
摘要
Abstract
Using the ultra-heavy-plate jet-impingement quenching test device and the multi-channel temperature recorder, 84 mm large section plates quenching temperature drop curve was experimentally investigated under the condition of jet velocities ranging from 3. 39 to 26. 8 m·s-1 , Reynolds number from 12808 to 117340 and jet densities ranging from 978. 7 to 6751. 5 L·( m2·min) -1 . Then, wall heat flux, heat transfer coefficient and boiling curve were calculated with inverse heat transfer modified method. The results indi-cate that both jet velocity and jet density influence the plate surface heat transfer mechanism and the distribution of the maximum heat flux. When jet velocity is low, a mixed heat transfer and"heat flux shoulder" phenomenon can be observed in wall parallel flow zone. With increased jet velocity, the film boiling heat transfer mechanism disappears and the maximum heat flux changes to the low-wall su-perheat position. These research results benefit the calculation of the temperature field and the control of structure property during ul-tra-heavy plate quenching.关键词
特厚钢板/多束阵列射流/淬火/热流密度/沸腾换热Key words
ultra-heavy plate/multibeam array jet/quenching/heat flux/boiling heat transfer分类
矿业与冶金引用本文复制引用
付天亮,邓想涛,韩钧,刘光浩,王昭东..特厚钢板阵列射流淬火的表面换热[J].工程科学学报,2017,39(9):1339-1346,8.基金项目
东北大学基本科研业务费重大科技创新资助项目(N160708001) （N160708001）
