HEAT AND MASS TRANSFER IN PULSED IMPINGEMENT DRYING

摘要：

Impinging jets issuing from the tailpipe of pulse combustors have been evaluated in recent studies for possible application in rapid drying of continuous sheets such as grades of paper and textiles etc.In order to contribute to further basic understanding the effect of pulsations on the local heat and mass transfer rates on the wet target surface being dried, a numerical study was performed on impingement drying with arrays of pulsating impinging jets under large temperature differences when the thermophysical properties can change significantly in the flow domain.The computational fluid dynamic approach was used to examine the effect of pulsation of the jet on the local Nusselt number distribution on the impingement surface.Examination of the velocity field shows that the instantaneous heat transfer rate on the target surface is highly dependent on the hydrodynamic and thermal boundary layer development with time.

关键词： impingement drying pulsation CFD Nusselt number

作者: Ying Jiang Peng Xu Arun S.Mujumdar Shuxia Qiu

作者单位: College of Science,China Jiliang University258 Xueyuan Street,Xiasha Higher Education District,Hangz Engineering,National University of Singapore9 Engineering Derive 1,117576,Singapore College of Science,China Jiliang University 258 Xueyuan Street,Xiasha Higher Education District,Hang

会议类型: 国际会议

会议名称: The 7th Asia-Pacific Drying Conference(第七届亚太地区干燥会议 ADC2011)

会议地点: 天津

会议语种:英文

页码: 1-5

在线出版日期: 2011-09-18（万方平台首次上网日期，不代表论文的发表时间）