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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Chia-Chin Chen Heng-Chuan Kan Ming-Hsiao Lee Chien-Wei Liu |
| Copyright Year | 2012 |
| Description | Author affiliation: Department of Mechanical Engineering, National Yunlin University of Science & Technology, No.123 University Road, Section 3, Douliou 64002, Taiwan, R.O.C. (Chien-Wei Liu) || Computational Engineering Division, National Center for High-Performance Computing, No.28 Nanke 3rd Road, Xinshi District, Tainan City 74147, Taiwan, R.O.C. (Chia-Chin Chen; Heng-Chuan Kan; Ming-Hsiao Lee) |
| Abstract | Simulation results showed that the models which consist of the pillar array structure induced more droplet collisions than those models constructed by the circle block, semi-circle block, ellipsoid block, and bevel fins, and avoided the deflection of the droplets which was revealed in the serpentine model. In addition, within the VLM chip, the wall temperature was much higher than the fluid temperature and certainly higher than those of the droplets in the flow due to the saturation temperature of fluid. Therefore, the more collisions occurred, the higher the droplet temperature was, due to the high heat flux caused by conduction between the droplets and the wall. Also, the longer flying durations of the droplets caused by the collisions increased the droplet temperature. The high droplet temperature implied the increase of the evaporation rate in the real VLM chip. Furthermore, the design with the pillar array structure provided a well axial thrust due to the symmetric trajectories of the droplets. From the viewpoint of the propellant efficiency and the properties of the ejected plume, the model with the pillar array structure is the best design pattern in the present study. In addition, the optimum pillar spacing should be 250 ?m (center-to-center distances between two lines of pillar) in this work. |
| Starting Page | 68 |
| Ending Page | 71 |
| File Size | 1091685 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781467316354 |
| ISSN | 21505934 |
| e-ISBN | 9781467316385 |
| e-ISBN | 9781467316378 |
| DOI | 10.1109/IMPACT.2012.6420277 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-10-24 |
| Publisher Place | Taiwan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Liquids Computational modeling Simulation Heating Propulsion Trajectory Arrays |
| Content Type | Text |
| Resource Type | Article |
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