Orthogonal experimental research on the structural parameters of a novel drill bit used for ice core drilling with air reverse circulation
Abstract A new type of ice core drill bit, designed with a vane swirler, was developed for ice core drilling with air reverse circulation. An orthogonal experimental design method was employed to investigate the effects of the swirler structure parameters on the reverse circulation performance of th...
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Language: | English |
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Cambridge University Press (CUP)
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crcambridgeupr:10.1017/jog.2019.76 2024-05-19T07:41:59+00:00 Orthogonal experimental research on the structural parameters of a novel drill bit used for ice core drilling with air reverse circulation Cao, Pinlu Zhao, Qi Chen, Zhuo Cao, Hongyu Chen, Baoyi 2019 http://dx.doi.org/10.1017/jog.2019.76 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143019000765 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by-nc-sa/4.0/ Journal of Glaciology volume 65, issue 254, page 1011-1022 ISSN 0022-1430 1727-5652 journal-article 2019 crcambridgeupr https://doi.org/10.1017/jog.2019.76 2024-04-25T06:51:28Z Abstract A new type of ice core drill bit, designed with a vane swirler, was developed for ice core drilling with air reverse circulation. An orthogonal experimental design method was employed to investigate the effects of the swirler structure parameters on the reverse circulation performance of the drill bit including helical angle, number of blades, blade length and blade central angle, etc. The entrainment ratio was used to evaluate the reverse circulation effectiveness of the drill bit. The results show that the helical angle is the dominant factor regardless of whether or not the flushing nozzles are part of the design of the drill bit. The number of blades is the least important factor for the drill bit designed with the flushing nozzles (referred to as drill bit I ), while the outlet area of the swirling slot is the least influential factor for the drill bit without flushing nozzles (referred to as drill bit П ). In addition, the appearance of the ice core has a certain effect on the air reverse circulation for both drill bits. Within the ranges of this study, the optimal structure of the drill bit was determined based on the range analysis of the orthogonal design. Article in Journal/Newspaper ice core Journal of Glaciology Cambridge University Press Journal of Glaciology 65 254 1011 1022 |
institution |
Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract A new type of ice core drill bit, designed with a vane swirler, was developed for ice core drilling with air reverse circulation. An orthogonal experimental design method was employed to investigate the effects of the swirler structure parameters on the reverse circulation performance of the drill bit including helical angle, number of blades, blade length and blade central angle, etc. The entrainment ratio was used to evaluate the reverse circulation effectiveness of the drill bit. The results show that the helical angle is the dominant factor regardless of whether or not the flushing nozzles are part of the design of the drill bit. The number of blades is the least important factor for the drill bit designed with the flushing nozzles (referred to as drill bit I ), while the outlet area of the swirling slot is the least influential factor for the drill bit without flushing nozzles (referred to as drill bit П ). In addition, the appearance of the ice core has a certain effect on the air reverse circulation for both drill bits. Within the ranges of this study, the optimal structure of the drill bit was determined based on the range analysis of the orthogonal design. |
format |
Article in Journal/Newspaper |
author |
Cao, Pinlu Zhao, Qi Chen, Zhuo Cao, Hongyu Chen, Baoyi |
spellingShingle |
Cao, Pinlu Zhao, Qi Chen, Zhuo Cao, Hongyu Chen, Baoyi Orthogonal experimental research on the structural parameters of a novel drill bit used for ice core drilling with air reverse circulation |
author_facet |
Cao, Pinlu Zhao, Qi Chen, Zhuo Cao, Hongyu Chen, Baoyi |
author_sort |
Cao, Pinlu |
title |
Orthogonal experimental research on the structural parameters of a novel drill bit used for ice core drilling with air reverse circulation |
title_short |
Orthogonal experimental research on the structural parameters of a novel drill bit used for ice core drilling with air reverse circulation |
title_full |
Orthogonal experimental research on the structural parameters of a novel drill bit used for ice core drilling with air reverse circulation |
title_fullStr |
Orthogonal experimental research on the structural parameters of a novel drill bit used for ice core drilling with air reverse circulation |
title_full_unstemmed |
Orthogonal experimental research on the structural parameters of a novel drill bit used for ice core drilling with air reverse circulation |
title_sort |
orthogonal experimental research on the structural parameters of a novel drill bit used for ice core drilling with air reverse circulation |
publisher |
Cambridge University Press (CUP) |
publishDate |
2019 |
url |
http://dx.doi.org/10.1017/jog.2019.76 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143019000765 |
genre |
ice core Journal of Glaciology |
genre_facet |
ice core Journal of Glaciology |
op_source |
Journal of Glaciology volume 65, issue 254, page 1011-1022 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by-nc-sa/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2019.76 |
container_title |
Journal of Glaciology |
container_volume |
65 |
container_issue |
254 |
container_start_page |
1011 |
op_container_end_page |
1022 |
_version_ |
1799481598590058496 |