Numerical analysis of air supply parameters and non‐uniform characteristics in a cover‐plate pre‐swirl system with the adjustable flow path
Summary The pre‐swirl system can transfer the cooling air from the compressor to the turbine rotor blades with a lower relative total temperature to avoid extreme thermal shock. This work proposes a novel test rig to investigate the flow and aero‐thermal characteristics in a cover‐plate type pre‐swi...
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| Veröffentlicht in: | International journal of energy research 2021-05, Vol.45 (6), p.8763-8779 |
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| container_title | International journal of energy research |
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| creator | Lei, Zhao Liu, Gaowen |
| description | Summary
The pre‐swirl system can transfer the cooling air from the compressor to the turbine rotor blades with a lower relative total temperature to avoid extreme thermal shock. This work proposes a novel test rig to investigate the flow and aero‐thermal characteristics in a cover‐plate type pre‐swirl system. The performed experimental and numerical studies focus on the effects of the partial pre‐swirl nozzle closing modes on the mass flow rate of air supply, temperature, and uniformities in a pre‐swirl system by application of the pre‐swirl nozzle adjustable flow path. Especially, the transient problem of the pre‐swirl system with the time‐space variation characteristics is approximately explored by changing the rotor‐stator phases, within the framework of a frozen‐rotor formulation. Results show that the opening of the pre‐swirl nozzle is of great importance for flow uniformity. A pre‐swirl nozzle closing of 14.3% will result in a 10.9% decrease in the mass flow rate of the pre‐swirl nozzle and a 9.9% decrease in the mass flow rate of air supply at the system pressure ratio of 1.32 and the rotating Mach number of 0.678. The maximum amplitude of the non‐uniformity coefficient of mass flow rate increases from 1.1% to 5.4% for a single supply hole. Moreover, the relative total temperature of air supply decreases by about 1 K with the increase of the fluctuation from 0.5 to 1.5 K. Thus, the performance of the aero‐engine can be improved due to a reduction in the amount of cooling air into the rotating turbine blades.
This work proposes a novel test rig to investigate the flow and aero‐thermal characteristics in a cover‐plate type pre‐swirl system. The performed experimental and numerical studies focus on the effects of the partial pre‐swirl nozzle closing modes on the mass flow rate of air supply, temperature, and uniformities in a pre‐swirl system by application of the pre‐swirl nozzle adjustable flow path. Especially, the transient problem of the pre‐swirl system with the time‐space variation characteristics is approximately explored by changing the rotor‐stator phases, within the framework of a frozen‐rotor formulation. |
| doi_str_mv | 10.1002/er.6412 |
| format | Article |
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The pre‐swirl system can transfer the cooling air from the compressor to the turbine rotor blades with a lower relative total temperature to avoid extreme thermal shock. This work proposes a novel test rig to investigate the flow and aero‐thermal characteristics in a cover‐plate type pre‐swirl system. The performed experimental and numerical studies focus on the effects of the partial pre‐swirl nozzle closing modes on the mass flow rate of air supply, temperature, and uniformities in a pre‐swirl system by application of the pre‐swirl nozzle adjustable flow path. Especially, the transient problem of the pre‐swirl system with the time‐space variation characteristics is approximately explored by changing the rotor‐stator phases, within the framework of a frozen‐rotor formulation. Results show that the opening of the pre‐swirl nozzle is of great importance for flow uniformity. A pre‐swirl nozzle closing of 14.3% will result in a 10.9% decrease in the mass flow rate of the pre‐swirl nozzle and a 9.9% decrease in the mass flow rate of air supply at the system pressure ratio of 1.32 and the rotating Mach number of 0.678. The maximum amplitude of the non‐uniformity coefficient of mass flow rate increases from 1.1% to 5.4% for a single supply hole. Moreover, the relative total temperature of air supply decreases by about 1 K with the increase of the fluctuation from 0.5 to 1.5 K. Thus, the performance of the aero‐engine can be improved due to a reduction in the amount of cooling air into the rotating turbine blades.
This work proposes a novel test rig to investigate the flow and aero‐thermal characteristics in a cover‐plate type pre‐swirl system. The performed experimental and numerical studies focus on the effects of the partial pre‐swirl nozzle closing modes on the mass flow rate of air supply, temperature, and uniformities in a pre‐swirl system by application of the pre‐swirl nozzle adjustable flow path. Especially, the transient problem of the pre‐swirl system with the time‐space variation characteristics is approximately explored by changing the rotor‐stator phases, within the framework of a frozen‐rotor formulation.</description><identifier>ISSN: 0363-907X</identifier><identifier>EISSN: 1099-114X</identifier><identifier>DOI: 10.1002/er.6412</identifier><language>eng</language><publisher>Chichester, UK: John Wiley & Sons, Inc</publisher><subject>Air ; Air supplies ; air supply ; Air temperature ; Compressors ; Cooling ; Flow rates ; Mach number ; Mass ; Mass flow rate ; non‐uniformity ; Nozzles ; Numerical analysis ; Pressure ratio ; pre‐swirl nozzle ; pre‐swirl system ; Rotation ; Rotor blades ; Rotor blades (turbomachinery) ; rotor phase ; Temperature ; Thermal shock ; Turbine blades ; turbine engine ; Turbine engines ; Turbines ; Uniformity coefficient</subject><ispartof>International journal of energy research, 2021-05, Vol.45 (6), p.8763-8779</ispartof><rights>2021 John Wiley & Sons Ltd</rights><rights>2021 John Wiley & Sons, Ltd.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3222-cd0d951cb2fc918325bf9f438357b2d26312db5935475228518a9710a681c98e3</citedby><cites>FETCH-LOGICAL-c3222-cd0d951cb2fc918325bf9f438357b2d26312db5935475228518a9710a681c98e3</cites><orcidid>0000-0002-5633-7791 ; 0000-0003-0236-5831</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fer.6412$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fer.6412$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids></links><search><creatorcontrib>Lei, Zhao</creatorcontrib><creatorcontrib>Liu, Gaowen</creatorcontrib><title>Numerical analysis of air supply parameters and non‐uniform characteristics in a cover‐plate pre‐swirl system with the adjustable flow path</title><title>International journal of energy research</title><description>Summary
The pre‐swirl system can transfer the cooling air from the compressor to the turbine rotor blades with a lower relative total temperature to avoid extreme thermal shock. This work proposes a novel test rig to investigate the flow and aero‐thermal characteristics in a cover‐plate type pre‐swirl system. The performed experimental and numerical studies focus on the effects of the partial pre‐swirl nozzle closing modes on the mass flow rate of air supply, temperature, and uniformities in a pre‐swirl system by application of the pre‐swirl nozzle adjustable flow path. Especially, the transient problem of the pre‐swirl system with the time‐space variation characteristics is approximately explored by changing the rotor‐stator phases, within the framework of a frozen‐rotor formulation. Results show that the opening of the pre‐swirl nozzle is of great importance for flow uniformity. A pre‐swirl nozzle closing of 14.3% will result in a 10.9% decrease in the mass flow rate of the pre‐swirl nozzle and a 9.9% decrease in the mass flow rate of air supply at the system pressure ratio of 1.32 and the rotating Mach number of 0.678. The maximum amplitude of the non‐uniformity coefficient of mass flow rate increases from 1.1% to 5.4% for a single supply hole. Moreover, the relative total temperature of air supply decreases by about 1 K with the increase of the fluctuation from 0.5 to 1.5 K. Thus, the performance of the aero‐engine can be improved due to a reduction in the amount of cooling air into the rotating turbine blades.
This work proposes a novel test rig to investigate the flow and aero‐thermal characteristics in a cover‐plate type pre‐swirl system. The performed experimental and numerical studies focus on the effects of the partial pre‐swirl nozzle closing modes on the mass flow rate of air supply, temperature, and uniformities in a pre‐swirl system by application of the pre‐swirl nozzle adjustable flow path. Especially, the transient problem of the pre‐swirl system with the time‐space variation characteristics is approximately explored by changing the rotor‐stator phases, within the framework of a frozen‐rotor formulation.</description><subject>Air</subject><subject>Air supplies</subject><subject>air supply</subject><subject>Air temperature</subject><subject>Compressors</subject><subject>Cooling</subject><subject>Flow rates</subject><subject>Mach number</subject><subject>Mass</subject><subject>Mass flow rate</subject><subject>non‐uniformity</subject><subject>Nozzles</subject><subject>Numerical analysis</subject><subject>Pressure ratio</subject><subject>pre‐swirl nozzle</subject><subject>pre‐swirl system</subject><subject>Rotation</subject><subject>Rotor blades</subject><subject>Rotor blades (turbomachinery)</subject><subject>rotor phase</subject><subject>Temperature</subject><subject>Thermal shock</subject><subject>Turbine blades</subject><subject>turbine engine</subject><subject>Turbine engines</subject><subject>Turbines</subject><subject>Uniformity coefficient</subject><issn>0363-907X</issn><issn>1099-114X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp10MtKAzEUBuAgCtYqvkLAhQuZmkvTmSyl1AsUBVHobshkMjQlczEnY5mdj6Cv6JOYWreuzoH_4xz4ETqnZEIJYdfGT2ZTyg7QiBIpE0qnq0M0InzGE0nS1TE6AdgQEjOajtDXY18bb7VyWDXKDWABtxVW1mPou84NuFNe1SYYD1GUuGmb74_PvrFV62us1zHVMbQQrAZsG6ywbt-Nj6hzKhjceRN32FrvMAwQTI23NqxxWBusyk0PQRXO4Mq12_grrE_RUaUcmLO_OUavt4uX-X2yfLp7mN8sE80ZY4kuSSkF1QWrtKQZZ6KoZDXlGRdpwUo245SVhZBcTFPBWCZopmRKiZplVMvM8DG62N_tfPvWGwj5pu197AByJmjkklMR1eVead8CeFPlnbe18kNOSb7rOzc-3_Ud5dVebq0zw38sXzz_6h9P8oU0</recordid><startdate>202105</startdate><enddate>202105</enddate><creator>Lei, Zhao</creator><creator>Liu, Gaowen</creator><general>John Wiley & Sons, Inc</general><general>Hindawi Limited</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7ST</scope><scope>7TB</scope><scope>7TN</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>F28</scope><scope>FR3</scope><scope>H96</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0002-5633-7791</orcidid><orcidid>https://orcid.org/0000-0003-0236-5831</orcidid></search><sort><creationdate>202105</creationdate><title>Numerical analysis of air supply parameters and non‐uniform characteristics in a cover‐plate pre‐swirl system with the adjustable flow path</title><author>Lei, Zhao ; Liu, Gaowen</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3222-cd0d951cb2fc918325bf9f438357b2d26312db5935475228518a9710a681c98e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Air</topic><topic>Air supplies</topic><topic>air supply</topic><topic>Air temperature</topic><topic>Compressors</topic><topic>Cooling</topic><topic>Flow rates</topic><topic>Mach number</topic><topic>Mass</topic><topic>Mass flow rate</topic><topic>non‐uniformity</topic><topic>Nozzles</topic><topic>Numerical analysis</topic><topic>Pressure ratio</topic><topic>pre‐swirl nozzle</topic><topic>pre‐swirl system</topic><topic>Rotation</topic><topic>Rotor blades</topic><topic>Rotor blades (turbomachinery)</topic><topic>rotor phase</topic><topic>Temperature</topic><topic>Thermal shock</topic><topic>Turbine blades</topic><topic>turbine engine</topic><topic>Turbine engines</topic><topic>Turbines</topic><topic>Uniformity coefficient</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lei, Zhao</creatorcontrib><creatorcontrib>Liu, Gaowen</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Environment Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>International journal of energy research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lei, Zhao</au><au>Liu, Gaowen</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Numerical analysis of air supply parameters and non‐uniform characteristics in a cover‐plate pre‐swirl system with the adjustable flow path</atitle><jtitle>International journal of energy research</jtitle><date>2021-05</date><risdate>2021</risdate><volume>45</volume><issue>6</issue><spage>8763</spage><epage>8779</epage><pages>8763-8779</pages><issn>0363-907X</issn><eissn>1099-114X</eissn><abstract>Summary
The pre‐swirl system can transfer the cooling air from the compressor to the turbine rotor blades with a lower relative total temperature to avoid extreme thermal shock. This work proposes a novel test rig to investigate the flow and aero‐thermal characteristics in a cover‐plate type pre‐swirl system. The performed experimental and numerical studies focus on the effects of the partial pre‐swirl nozzle closing modes on the mass flow rate of air supply, temperature, and uniformities in a pre‐swirl system by application of the pre‐swirl nozzle adjustable flow path. Especially, the transient problem of the pre‐swirl system with the time‐space variation characteristics is approximately explored by changing the rotor‐stator phases, within the framework of a frozen‐rotor formulation. Results show that the opening of the pre‐swirl nozzle is of great importance for flow uniformity. A pre‐swirl nozzle closing of 14.3% will result in a 10.9% decrease in the mass flow rate of the pre‐swirl nozzle and a 9.9% decrease in the mass flow rate of air supply at the system pressure ratio of 1.32 and the rotating Mach number of 0.678. The maximum amplitude of the non‐uniformity coefficient of mass flow rate increases from 1.1% to 5.4% for a single supply hole. Moreover, the relative total temperature of air supply decreases by about 1 K with the increase of the fluctuation from 0.5 to 1.5 K. Thus, the performance of the aero‐engine can be improved due to a reduction in the amount of cooling air into the rotating turbine blades.
This work proposes a novel test rig to investigate the flow and aero‐thermal characteristics in a cover‐plate type pre‐swirl system. The performed experimental and numerical studies focus on the effects of the partial pre‐swirl nozzle closing modes on the mass flow rate of air supply, temperature, and uniformities in a pre‐swirl system by application of the pre‐swirl nozzle adjustable flow path. Especially, the transient problem of the pre‐swirl system with the time‐space variation characteristics is approximately explored by changing the rotor‐stator phases, within the framework of a frozen‐rotor formulation.</abstract><cop>Chichester, UK</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1002/er.6412</doi><tpages>17</tpages><orcidid>https://orcid.org/0000-0002-5633-7791</orcidid><orcidid>https://orcid.org/0000-0003-0236-5831</orcidid><oa>free_for_read</oa></addata></record> |
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| ispartof | International journal of energy research, 2021-05, Vol.45 (6), p.8763-8779 |
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| source | Wiley Journals |
| subjects | Air Air supplies air supply Air temperature Compressors Cooling Flow rates Mach number Mass Mass flow rate non‐uniformity Nozzles Numerical analysis Pressure ratio pre‐swirl nozzle pre‐swirl system Rotation Rotor blades Rotor blades (turbomachinery) rotor phase Temperature Thermal shock Turbine blades turbine engine Turbine engines Turbines Uniformity coefficient |
| title | Numerical analysis of air supply parameters and non‐uniform characteristics in a cover‐plate pre‐swirl system with the adjustable flow path |
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