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http://bura.brunel.ac.uk/handle/2438/29485| Title: | Computational fluid dynamic prediction and physical mechanisms consideration of thermal separation and heat transfer processes inside divergent, straight, and convergent ranque-hilsch vortex tubes |
| Authors: | Bazgir, A Nabhani, N Bazooyar, B Heydari, A |
| Keywords: | heat transfer enhancement;divergent and convergent Ranque–Hilsch vortex tube;physical flow structure;secondary circulation loop;vortex formation;thermal efficiency |
| Issue Date: | 13-Sep-2019 |
| Publisher: | American Society of Mechanical Engineers |
| Citation: | Bazgir, A. et al. (2019) 'Computational fluid dynamic prediction and physical mechanisms consideration of thermal separation and heat transfer processes inside divergent, straight, and convergent ranque-hilsch vortex tubes', Journal of Heat Transfer, 141 (10), 101701 , pp. 1 - 17. doi: 10.1115/1.4043728. |
| Abstract: | The design of Ranque-Hilsch vortex tube (RHVT) seems to be interesting for refrigeration and air conditioning purposes in industry. Improving thermal efficiency of the vortex tubes could increase the operability of these innovative facilities for a wider heat and cooling demand to this end; it is of an interest to understand the physical phenomena of thermal and flow patterns inside a vortex tube. In this work, the flow phenomena and the thermal energy transfer in RHVT are studied for three RHVT: straight, divergent, and convergent vortex tubes. A three-dimensional numerical analysis of swirling or vortex flow is performed, verified, and validated against previous experimental and numerical data reported in literature. The flow field and the temperature separation inside an RHVT for different configuration of straight, five angles of divergent hot tube (1 deg, 2 deg, 3 deg, 4 deg, and 6 deg) and five angle of convergent hot tube (0.5 deg, 0.8 deg, 1 deg, 1.5 deg, and 2 deg) are investigated. The thermal performance for all investigated RHVTs configuration is determined and quantitatively assessed via visualizing the stream lines for all three scenarios. |
| Description: | Paper No: HT-18-1305 |
| URI: | https://bura.brunel.ac.uk/handle/2438/29485 |
| DOI: | https://doi.org/10.1115/1.4043728 |
| ISSN: | 0022-1481 |
| Other Identifiers: | ORCiD: Bahamin Bazooyar https://orcid.org/0000-0002-7341-4509 101701 HT-18-1305 |
| Appears in Collections: | Dept of Mechanical and Aerospace Engineering Research Papers |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| FullText.pdf | Copyright © 2019 The American Society of Mechanical Engineers. All rights reserved. This is the accepted manuscript of the article: Bazgir, A. et al. (2019) 'Computational fluid dynamic prediction and physical mechanisms consideration of thermal separation and heat transfer processes inside divergent, straight, and convergent ranque-hilsch vortex tubes', Journal of Heat Transfer, 141 (10), 101701 , pp. 1 - 17. doi: 10.1115/1.4043728. Authors are permitted to self-archive the accepted manuscript on their own personal website and/or in their funder or institutional repositories, for public release 12 months after publication. Authors should cite the version of record and DOI number on the first page of any deposited version and provide a link from it to the URL of the published article on the journal’s website. (see: https://www.asme.org/publications-submissions/journals/information-for-authors/open-access). | 3.03 MB | Adobe PDF | View/Open |
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