Study on Wall Temperature Distribution of Oscillating Tube

来源 :Journal of Thermal Science | 被引量 : 0次 | 上传用户:LIUANQING5201314
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The wall temperature distribution and heat transfer process of the oscillating tube have been investigated in thispaper using both numerical simulation and experimental method. The wall temperature of oscillating tube increasesrapidly in the inlet and then decreases slowly, moreover, the rally phenomenon of wall temperature nearthe closed end is observed. With the increase of jet flow frequency, the highest wall temperature increases and thelocation of that moves towards the inlet. The velocity of pressure wave in the oscillating tube almost remainsconstant even its intensity changes. The quantity of heat transfer between the gas and inner wall of the oscillatingtube determines the wall temperature of every location, and the pressure wave disturbance can cause the heattransfer quantity change. Each pressure wave has its own disturbance range. The wall temperature distribution canbe explained by the change of pressure wave intensity and its disturbance time. Besides, the step and rally of walltemperature are discussed, which shows that the conditions of heat transfer can be improved due to intersection orreflection of pressure waves. The wall temperature distribution and heat transfer process of the oscillating tube have been investigated in this paper using both numerical simulation and experimental method. The wall temperature of oscillating tube increasesrapidly in the inlet and then reduce slowly, moreover, the rally phenomenon of wall temperature nearthe closed With the increase of jet flow frequency, the highest wall temperature increases and thelocation of that moves towards the inlet. The velocity of pressure wave in the oscillating tube almost remainsconstant even its intensity changes. The quantity of heat transfer between the gas and inner wall of the oscillating tube determines the wall temperature of every location, and the pressure wave disturbance can cause the heattransfer quantity change. Each pressure wave has its own disturbance range. The wall temperature distribution canbe explained by the change of pressure wave intensity and its disturbance time. Besides, the step and rally of walltemperature are discussed, which shows that the conditions of heat transfer can be improved due to intersection orreflection of pressure waves.
其他文献
由信息产业部主办的“’99中国国际互联网研讨会暨展示会”将于1999年5月18~20日在北京国际会议中心召开。该活动目的是通过会展发布Internet相关政策,加强与国际组织机构和
流行性出血热自发性肾破裂──附5例报告金玉姬,姜淑琴,申今姬,伊世杰,尹明实,沈海今,金仁仙延边医学院附属医院传染科延边医学院附属医院CT室珲春市医院关键词出血热,流行性;破裂;肾中图
一、好习惯是怎样养成的 [观察]“求比一个数多几的练习”(一年级) 1.“你说得最响,奖励你一颗五角星。”一年级的数学练习课,学生看卡片口算。共12张卡片,12位小朋友口答,都
二期显性梅毒蔷薇斑、扁平湿疣一例金贤玉,王鹏,金哲虎,金春玉,林松男,姜昌吉延边医学院附属医院皮肤科关键词梅毒;疣;斑疹中图法分类号R759.1梅毒是因性行为感染引起的慢性全身性疾病。近
变革的时代没有一成不变的事物,3年前,任桂英呆了20多年的工厂关门了!消沉了好一段时间的任桂英没有被困境压倒,而是顽强地走向社会,为自己打拼出一条新的人生之路。 Three
多读,在阅读体验中积累多读,重视阅读体验,是写好作文的基础,也是学生积累思想、情感、语言的重要途径。记得鲁迅曾说过:“文章应该怎么做,我说不出来,因为自己的作文,是由于
胃嗜酸性肉芽肿临床较为少见,因其缺乏特异性表现,很容易被误诊为癌肿。提高对本病的认识和诊断具有重要的临床意义。本文收集了有完整资料的胃嗜酸性肉芽肿病例,对其临床表
肝性胸水是肝硬化失代偿的并发症,临床上并非少见。其治疗常发生困难,某些临床特点也容易被忽视,我院从1979年到1990年共收治632例肝硬化失代偿者,伴肝性胸水15例,占2.4%。1