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Nek5000 기반의 마이크로 버블 유동저항감소 직접수치모사

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Abstract
The microbubble generation technology in underwater vehicle is considered as one of the promising technique to reduce skin friction resistance. In the present work, microbubble dynamics were investigated in two-way coupled microbubble-laden turbulent channel flows with Nek5000 code based on the spectral element method. The Euler-Lagrange approach was adopted to predict the microbubble dynamics and to investigate the effect on flow field. The fully elastic collision model was implemented to consider the effect of wall-bubble interaction. To investigate the drag reduction effect of microbubble, turbulent flow in the channel at Reτ=135 was conducted with direct numerical simulation and a Lagrangian particle tracking approach. Three cases with different conditions in the bubble diameter and void fraction were considered.
Author(s)
김병천장경식이상욱
Issued Date
2021
Type
Article
Keyword
직접수치모사스펙트럴요소오일러-라그랑지 기법마이크로버블저항저감
DOI
10.6112/kscfe.2021.26.4.048
URI
https://oak.ulsan.ac.kr/handle/2021.oak/8902
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_nrf_kci_oai_kci_go_kr_ARTI_9904043&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Nek5000%20%EA%B8%B0%EB%B0%98%EC%9D%98%20%EB%A7%88%EC%9D%B4%ED%81%AC%EB%A1%9C%20%EB%B2%84%EB%B8%94%20%EC%9C%A0%EB%8F%99%EC%A0%80%ED%95%AD%EA%B0%90%EC%86%8C%20%EC%A7%81%EC%A0%91%EC%88%98%EC%B9%98%EB%AA%A8%EC%82%AC&offset=0&pcAvailability=true
Publisher
한국전산유체공학회지
Location
대한민국
Language
한국어
ISSN
1598-6071
Citation Volume
26
Citation Number
4
Citation Start Page
48
Citation End Page
54
Appears in Collections:
Engineering > Mechanical and Automotive Engineering
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