Loading…
Research on pressure fluctuation induced by tip leakage vortex of axial flow circulating pump under unpowered driven conditions
Axial flow circulating pumps (AFCPs) are large marine steam turbine units for large-sized ships. One peculiar operation condition for AFCPs is when a ship cruises beyond a certain speed, the energy of pump inflow can completely overcome the frictional resisting moment of the pump itself, thereby dri...
Saved in:
Published in: | Physics of fluids (1994) 2023-03, Vol.35 (3) |
---|---|
Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
cited_by | cdi_FETCH-LOGICAL-c362t-68a91ca18ee201580ccb0b8e0dd9a61ca9cec773dd3e05a63b1931c8bbcf35183 |
---|---|
cites | cdi_FETCH-LOGICAL-c362t-68a91ca18ee201580ccb0b8e0dd9a61ca9cec773dd3e05a63b1931c8bbcf35183 |
container_end_page | |
container_issue | 3 |
container_start_page | |
container_title | Physics of fluids (1994) |
container_volume | 35 |
creator | Jia, XiaoQi Lv, Hao Rao, Kun Zhang, ShuaiKang Zhu, ZuChao |
description | Axial flow circulating pumps (AFCPs) are large marine steam turbine units for large-sized ships. One peculiar operation condition for AFCPs is when a ship cruises beyond a certain speed, the energy of pump inflow can completely overcome the frictional resisting moment of the pump itself, thereby driving the impeller to rotate. Such a condition is also known as the unpowered driven condition (UDC). At this time, the fluid is in the artesian flow state. In this paper, pressure fluctuation and inner flow of the AFCP under UDCs and different inflow conditions are analyzed using delayed detached-eddy simulation turbulence model. It is found that the intensity of the tip leakage vortex (TLV) decreases from the leading edge to the trailing edge of the blade, and the amplitude of pressure pulsation caused by TLV also decreases. Due to the jet wake structure at the blade trailing edge, the amplitude of pressure fluctuation at the trailing edge of the blade increases by 7.8% under the optimal UDC. In addition, the compression–expansion term determines the strength of the core of TLV, thus affecting the amplitude of pressure fluctuation. The viscous dissipation effect of TLV can cause high-frequency components of pressure fluctuation. |
doi_str_mv | 10.1063/5.0138842 |
format | article |
fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_crossref_primary_10_1063_5_0138842</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2789516834</sourcerecordid><originalsourceid>FETCH-LOGICAL-c362t-68a91ca18ee201580ccb0b8e0dd9a61ca9cec773dd3e05a63b1931c8bbcf35183</originalsourceid><addsrcrecordid>eNqdkE1LAzEQhoMoWD8O_oOAJ4WtyaabzR6l-AUFQfQcsslsTd1u1mRT25N_3dQWvHuZGWae9x14EbqgZEwJZzfFmFAmxCQ_QCNKRJWVnPPD7VySjHNGj9FJCAtCCKtyPkLfLxBAef2OXYd7DyFED7hpox6iGmxa2s5EDQbXGzzYHregPtQc8Mr5AdbYNVitrWqTxH1hbb2ObdJ1c9zHZY9jZ8Cn2rsv8MnEeLuCDmvXGbt1D2foqFFtgPN9P0Vv93ev08ds9vzwNL2dZZrxfMi4UBXVigqAnNBCEK1rUgsgxlSKp0ulQZclM4YBKRRnNa0Y1aKudcMKKtgputz59t59RgiDXLjou_RS5qWoCsoFmyTqakdp70Lw0Mje26XyG0mJ3OYrC7nPN7HXOzZoO_xG9T84BfkHyt407AdJ9YxU</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2789516834</pqid></control><display><type>article</type><title>Research on pressure fluctuation induced by tip leakage vortex of axial flow circulating pump under unpowered driven conditions</title><source>American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list)</source><source>AIP Digital Archive</source><creator>Jia, XiaoQi ; Lv, Hao ; Rao, Kun ; Zhang, ShuaiKang ; Zhu, ZuChao</creator><creatorcontrib>Jia, XiaoQi ; Lv, Hao ; Rao, Kun ; Zhang, ShuaiKang ; Zhu, ZuChao</creatorcontrib><description>Axial flow circulating pumps (AFCPs) are large marine steam turbine units for large-sized ships. One peculiar operation condition for AFCPs is when a ship cruises beyond a certain speed, the energy of pump inflow can completely overcome the frictional resisting moment of the pump itself, thereby driving the impeller to rotate. Such a condition is also known as the unpowered driven condition (UDC). At this time, the fluid is in the artesian flow state. In this paper, pressure fluctuation and inner flow of the AFCP under UDCs and different inflow conditions are analyzed using delayed detached-eddy simulation turbulence model. It is found that the intensity of the tip leakage vortex (TLV) decreases from the leading edge to the trailing edge of the blade, and the amplitude of pressure pulsation caused by TLV also decreases. Due to the jet wake structure at the blade trailing edge, the amplitude of pressure fluctuation at the trailing edge of the blade increases by 7.8% under the optimal UDC. In addition, the compression–expansion term determines the strength of the core of TLV, thus affecting the amplitude of pressure fluctuation. The viscous dissipation effect of TLV can cause high-frequency components of pressure fluctuation.</description><identifier>ISSN: 1070-6631</identifier><identifier>EISSN: 1089-7666</identifier><identifier>DOI: 10.1063/5.0138842</identifier><identifier>CODEN: PHFLE6</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Amplitudes ; Axial flow ; Axial flow pumps ; Compressive strength ; Cruise ships ; Detached eddy simulation ; Fluid flow ; Impellers ; Inflow ; Leakage ; Steam turbines ; Trailing edges ; Turbulence models</subject><ispartof>Physics of fluids (1994), 2023-03, Vol.35 (3)</ispartof><rights>Author(s)</rights><rights>2023 Author(s). Published under an exclusive license by AIP Publishing.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c362t-68a91ca18ee201580ccb0b8e0dd9a61ca9cec773dd3e05a63b1931c8bbcf35183</citedby><cites>FETCH-LOGICAL-c362t-68a91ca18ee201580ccb0b8e0dd9a61ca9cec773dd3e05a63b1931c8bbcf35183</cites><orcidid>0000-0002-9504-5097 ; 0000-0002-7825-1534 ; 0000-0003-4276-3324 ; 0000-0003-3812-5055</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,786,790,1566,27957,27958</link.rule.ids></links><search><creatorcontrib>Jia, XiaoQi</creatorcontrib><creatorcontrib>Lv, Hao</creatorcontrib><creatorcontrib>Rao, Kun</creatorcontrib><creatorcontrib>Zhang, ShuaiKang</creatorcontrib><creatorcontrib>Zhu, ZuChao</creatorcontrib><title>Research on pressure fluctuation induced by tip leakage vortex of axial flow circulating pump under unpowered driven conditions</title><title>Physics of fluids (1994)</title><description>Axial flow circulating pumps (AFCPs) are large marine steam turbine units for large-sized ships. One peculiar operation condition for AFCPs is when a ship cruises beyond a certain speed, the energy of pump inflow can completely overcome the frictional resisting moment of the pump itself, thereby driving the impeller to rotate. Such a condition is also known as the unpowered driven condition (UDC). At this time, the fluid is in the artesian flow state. In this paper, pressure fluctuation and inner flow of the AFCP under UDCs and different inflow conditions are analyzed using delayed detached-eddy simulation turbulence model. It is found that the intensity of the tip leakage vortex (TLV) decreases from the leading edge to the trailing edge of the blade, and the amplitude of pressure pulsation caused by TLV also decreases. Due to the jet wake structure at the blade trailing edge, the amplitude of pressure fluctuation at the trailing edge of the blade increases by 7.8% under the optimal UDC. In addition, the compression–expansion term determines the strength of the core of TLV, thus affecting the amplitude of pressure fluctuation. The viscous dissipation effect of TLV can cause high-frequency components of pressure fluctuation.</description><subject>Amplitudes</subject><subject>Axial flow</subject><subject>Axial flow pumps</subject><subject>Compressive strength</subject><subject>Cruise ships</subject><subject>Detached eddy simulation</subject><subject>Fluid flow</subject><subject>Impellers</subject><subject>Inflow</subject><subject>Leakage</subject><subject>Steam turbines</subject><subject>Trailing edges</subject><subject>Turbulence models</subject><issn>1070-6631</issn><issn>1089-7666</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNqdkE1LAzEQhoMoWD8O_oOAJ4WtyaabzR6l-AUFQfQcsslsTd1u1mRT25N_3dQWvHuZGWae9x14EbqgZEwJZzfFmFAmxCQ_QCNKRJWVnPPD7VySjHNGj9FJCAtCCKtyPkLfLxBAef2OXYd7DyFED7hpox6iGmxa2s5EDQbXGzzYHregPtQc8Mr5AdbYNVitrWqTxH1hbb2ObdJ1c9zHZY9jZ8Cn2rsv8MnEeLuCDmvXGbt1D2foqFFtgPN9P0Vv93ev08ds9vzwNL2dZZrxfMi4UBXVigqAnNBCEK1rUgsgxlSKp0ulQZclM4YBKRRnNa0Y1aKudcMKKtgputz59t59RgiDXLjou_RS5qWoCsoFmyTqakdp70Lw0Mje26XyG0mJ3OYrC7nPN7HXOzZoO_xG9T84BfkHyt407AdJ9YxU</recordid><startdate>202303</startdate><enddate>202303</enddate><creator>Jia, XiaoQi</creator><creator>Lv, Hao</creator><creator>Rao, Kun</creator><creator>Zhang, ShuaiKang</creator><creator>Zhu, ZuChao</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-9504-5097</orcidid><orcidid>https://orcid.org/0000-0002-7825-1534</orcidid><orcidid>https://orcid.org/0000-0003-4276-3324</orcidid><orcidid>https://orcid.org/0000-0003-3812-5055</orcidid></search><sort><creationdate>202303</creationdate><title>Research on pressure fluctuation induced by tip leakage vortex of axial flow circulating pump under unpowered driven conditions</title><author>Jia, XiaoQi ; Lv, Hao ; Rao, Kun ; Zhang, ShuaiKang ; Zhu, ZuChao</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c362t-68a91ca18ee201580ccb0b8e0dd9a61ca9cec773dd3e05a63b1931c8bbcf35183</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Amplitudes</topic><topic>Axial flow</topic><topic>Axial flow pumps</topic><topic>Compressive strength</topic><topic>Cruise ships</topic><topic>Detached eddy simulation</topic><topic>Fluid flow</topic><topic>Impellers</topic><topic>Inflow</topic><topic>Leakage</topic><topic>Steam turbines</topic><topic>Trailing edges</topic><topic>Turbulence models</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jia, XiaoQi</creatorcontrib><creatorcontrib>Lv, Hao</creatorcontrib><creatorcontrib>Rao, Kun</creatorcontrib><creatorcontrib>Zhang, ShuaiKang</creatorcontrib><creatorcontrib>Zhu, ZuChao</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physics of fluids (1994)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Jia, XiaoQi</au><au>Lv, Hao</au><au>Rao, Kun</au><au>Zhang, ShuaiKang</au><au>Zhu, ZuChao</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Research on pressure fluctuation induced by tip leakage vortex of axial flow circulating pump under unpowered driven conditions</atitle><jtitle>Physics of fluids (1994)</jtitle><date>2023-03</date><risdate>2023</risdate><volume>35</volume><issue>3</issue><issn>1070-6631</issn><eissn>1089-7666</eissn><coden>PHFLE6</coden><abstract>Axial flow circulating pumps (AFCPs) are large marine steam turbine units for large-sized ships. One peculiar operation condition for AFCPs is when a ship cruises beyond a certain speed, the energy of pump inflow can completely overcome the frictional resisting moment of the pump itself, thereby driving the impeller to rotate. Such a condition is also known as the unpowered driven condition (UDC). At this time, the fluid is in the artesian flow state. In this paper, pressure fluctuation and inner flow of the AFCP under UDCs and different inflow conditions are analyzed using delayed detached-eddy simulation turbulence model. It is found that the intensity of the tip leakage vortex (TLV) decreases from the leading edge to the trailing edge of the blade, and the amplitude of pressure pulsation caused by TLV also decreases. Due to the jet wake structure at the blade trailing edge, the amplitude of pressure fluctuation at the trailing edge of the blade increases by 7.8% under the optimal UDC. In addition, the compression–expansion term determines the strength of the core of TLV, thus affecting the amplitude of pressure fluctuation. The viscous dissipation effect of TLV can cause high-frequency components of pressure fluctuation.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0138842</doi><tpages>16</tpages><orcidid>https://orcid.org/0000-0002-9504-5097</orcidid><orcidid>https://orcid.org/0000-0002-7825-1534</orcidid><orcidid>https://orcid.org/0000-0003-4276-3324</orcidid><orcidid>https://orcid.org/0000-0003-3812-5055</orcidid><oa>free_for_read</oa></addata></record> |
fulltext | fulltext |
identifier | ISSN: 1070-6631 |
ispartof | Physics of fluids (1994), 2023-03, Vol.35 (3) |
issn | 1070-6631 1089-7666 |
language | eng |
recordid | cdi_crossref_primary_10_1063_5_0138842 |
source | American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list); AIP Digital Archive |
subjects | Amplitudes Axial flow Axial flow pumps Compressive strength Cruise ships Detached eddy simulation Fluid flow Impellers Inflow Leakage Steam turbines Trailing edges Turbulence models |
title | Research on pressure fluctuation induced by tip leakage vortex of axial flow circulating pump under unpowered driven conditions |
url | http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-09-21T19%3A54%3A42IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Research%20on%20pressure%20fluctuation%20induced%20by%20tip%20leakage%20vortex%20of%20axial%20flow%20circulating%20pump%20under%20unpowered%20driven%20conditions&rft.jtitle=Physics%20of%20fluids%20(1994)&rft.au=Jia,%20XiaoQi&rft.date=2023-03&rft.volume=35&rft.issue=3&rft.issn=1070-6631&rft.eissn=1089-7666&rft.coden=PHFLE6&rft_id=info:doi/10.1063/5.0138842&rft_dat=%3Cproquest_cross%3E2789516834%3C/proquest_cross%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-c362t-68a91ca18ee201580ccb0b8e0dd9a61ca9cec773dd3e05a63b1931c8bbcf35183%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=2789516834&rft_id=info:pmid/&rfr_iscdi=true |