Application of Computational Fluid Dynamics in Aerospace Industry
This talk will not only cover the current application of CFD in Taiwan’s aerospace industry, but also give a brief description of aerodynamic design process and flow-field simulation process of the flight vehicle. In addition, the speaker will share more than 30 years of experience in aerodynamic design and simulation analysis, as well as the expectations of the current graduate students who are major in fluid dynamics and heat transfer. Finally, the speaker will introduce the future development goals and planning directions of CFD applications, and provide advice to students who are interested in entering the defense and aerospace industry after graduation.
國立台灣大學 機械所 機械工程博士
中山科學研究院 飛彈火箭研究所 氣動力學組 組長
Role of Surface Engineering for Enhanced Pool Boiling of Highly Wetting Dielectric Liquid
The realization of advanced technologies to augment boiling heat transfer is of dire significance due to its impact on energy, environment, and thermal management requirements of high-power electronics. Recent studies have revealed that micro and nanoscale coatings of high surface area can substantially enhance boiling heat transfer performance. While promising results have been reported in the literature for the pool boiling of water, there are comparatively fewer research reports about the enhanced pool boiling of highly wetting dielectric liquids with little understanding, and even less consensus, on the fundamental underlying mechanisms by which structured coatings enhance boiling. Besides, dielectric liquids possess great potential for thermal management of electronic devices for containing features like environmental benign and are free from electrical hazards. However, very large wall superheats are required for the boiling incipience due to very low surface tension of these highly wetting liquids. Furthermore, the associated fabrication methods employed in the lab are not scalable to large areas and complex geometries for industrial applications. The emphasis of the Ph.D. dissertation research is on: (1) detailed review of engineered surfaces for enhanced pool boiling of dielectric liquids, (2) development of various micro/nano structured surfaces, (3) the role of surface engineering for enhanced pool boiling of a highly wetting dielectric liquid, HFE-7200, (4) characterization of the effects of different configurations of nanowires surfaces on boiling performance, (5) design and engineering of robust high performance surfaces, and (6) development/comparison/ of a prediction model to predict the pool boiling heat transfer.
Uzair Sajjad was born 30 years ago in a desolate small town of Southern Punjab, Pakistan where there were only several rows of low and primitive huts constructed with bricks. He started his early education in the same town and completed my intermediate. Fortunately, he got admission in UET Taxila and did his graduation from there, and during this time, he has been working on cooling of solar photovoltaic modules. After practical exposure of one and half year, he started academia as a career and wanted to contribute in mechanical engineering research. For this enthusiasm, he got admission in National Chiao Tung University in Taiwan where he is doing research on Cooling of electronics. During last 3 years, he has been involved in couple of industrial projects. Besides, he has published 22 research articles (plus 08 manuscripts are submitted to various internationally reputed journals).
Seminar Announcement 2021/05/13: (1)Application of Computational Fluid Dynamics in Aerospace Industry