Effects of damaged rotor blades on the aerodynamic behavior and heat-transfer characteristics of high-pressure gas turbines
DC Field | Value | Language |
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dc.contributor.author | Mai, T.D. | - |
dc.contributor.author | Ryu, J. | - |
dc.date.accessioned | 2021-11-24T01:40:10Z | - |
dc.date.available | 2021-11-24T01:40:10Z | - |
dc.date.issued | 2021-03 | - |
dc.identifier.issn | 2227-7390 | - |
dc.identifier.issn | 2227-7390 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/51779 | - |
dc.description.abstract | Gas turbines are critical components of combined-cycle power plants because they influence the power output and overall efficiency. However, gas-turbine blades are susceptible to damage when operated under high-pressure, high-temperature conditions. This reduces gas-turbine performance and increases the probability of power-plant failure. This study compares the effects of rotor-blade damage at different locations on their aerodynamic behavior and heat-transfer properties. To this end, we considered five cases: a reference case involving a normal rotor blade and one case each of damage occurring on the pressure and suction sides of the blades’ near-tip and midspan sections. We used the Reynolds-averaged Navier-Stokes equation coupled with the k − ω SST γ turbulence model to solve the problem of high-speed, high-pressure compressible flow through the GE-E3 gas-turbine model. The results reveal that the rotor-blade damage increases the heat-transfer coefficients of the blade and vane surfaces by approximately 1% and 0.5%, respectively. This, in turn, increases their thermal stresses, especially near the rotor-blade tip and around damaged locations. The four damaged-blade cases reveal an increase in the aerodynamic force acting on the blade/vane surfaces. This increases the mechanical stress on and reduces the fatigue life of the blade/vane components. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | MDPI AG | - |
dc.title | Effects of damaged rotor blades on the aerodynamic behavior and heat-transfer characteristics of high-pressure gas turbines | - |
dc.type | Article | - |
dc.identifier.doi | 10.3390/math9060627 | - |
dc.identifier.bibliographicCitation | Mathematics, v.9, no.6 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000645352900001 | - |
dc.identifier.scopusid | 2-s2.0-85103273646 | - |
dc.citation.number | 6 | - |
dc.citation.title | Mathematics | - |
dc.citation.volume | 9 | - |
dc.type.docType | Article | - |
dc.publisher.location | 스위스 | - |
dc.subject.keywordAuthor | Aerodynamic characteristic | - |
dc.subject.keywordAuthor | Compressible flow | - |
dc.subject.keywordAuthor | Damaged rotor blade | - |
dc.subject.keywordAuthor | Gas turbine | - |
dc.subject.keywordAuthor | Heat-transfer coefficient | - |
dc.subject.keywordPlus | NUMERICAL-ANALYSIS | - |
dc.subject.keywordPlus | EDGE MODIFICATION | - |
dc.subject.keywordPlus | FAILURE ANALYSIS | - |
dc.subject.keywordPlus | FLOW | - |
dc.relation.journalResearchArea | Mathematics | - |
dc.relation.journalWebOfScienceCategory | Mathematics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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