The Effect of Turbulent Intensity on Friction Coefficient in Boundary-Layer Transitional Flat Plate Flow
In this study, the effect of inlet-turbulence intensity on the friction coefficient for the transitional boundary layer has been investigated computationally. For this purpose, two equation turbulence models of Std. k-ε, RNG k-ε, Std. k-ω, and SST k-ω have been compared with the Gamma–Theta (GT) tra...
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2025-05-01
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| author | Muhsine Saru Hıfzı Arda Erşan Erhan Pulat |
| author_facet | Muhsine Saru Hıfzı Arda Erşan Erhan Pulat |
| author_sort | Muhsine Saru |
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| description | In this study, the effect of inlet-turbulence intensity on the friction coefficient for the transitional boundary layer has been investigated computationally. For this purpose, two equation turbulence models of Std. k-ε, RNG k-ε, Std. k-ω, and SST k-ω have been compared with the Gamma–Theta (GT) transitional model, and it has been found that the Gamma–Theta model is the most consistent model with the experimental values of the ERCOFTAC T3A test case. Then, the effect of inlet-turbulence intensity on the friction coefficient has been computed by using this Gamma–Theta model. The transition from laminar to turbulence is shortened with increasing turbulence intensity by changing it from 1% to 10%. The most suitable inlet-turbulence intensity value with the experimental results of the ERCOFTAC T3A test case is found as Tu = 3.3%. |
| format | Article |
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| issn | 2076-3417 |
| language | English |
| publishDate | 2025-05-01 |
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| series | Applied Sciences |
| spelling | doaj-art-c842fa7490e24c399df594aebb68f4e52025-08-20T02:23:06ZengMDPI AGApplied Sciences2076-34172025-05-011511585210.3390/app15115852The Effect of Turbulent Intensity on Friction Coefficient in Boundary-Layer Transitional Flat Plate FlowMuhsine Saru0Hıfzı Arda Erşan1Erhan Pulat2Mechanical Engineering Department, School of Natural and Applied Sciences, Bursa Uludag University, Gorukle, Bursa 16059, TürkiyeMechanical Engineering Department, School of Natural and Applied Sciences, Bursa Uludag University, Gorukle, Bursa 16059, TürkiyeMechanical Engineering Department, Engineering Faculty, Bursa Uludag University, Gorukle, Bursa 16059, TürkiyeIn this study, the effect of inlet-turbulence intensity on the friction coefficient for the transitional boundary layer has been investigated computationally. For this purpose, two equation turbulence models of Std. k-ε, RNG k-ε, Std. k-ω, and SST k-ω have been compared with the Gamma–Theta (GT) transitional model, and it has been found that the Gamma–Theta model is the most consistent model with the experimental values of the ERCOFTAC T3A test case. Then, the effect of inlet-turbulence intensity on the friction coefficient has been computed by using this Gamma–Theta model. The transition from laminar to turbulence is shortened with increasing turbulence intensity by changing it from 1% to 10%. The most suitable inlet-turbulence intensity value with the experimental results of the ERCOFTAC T3A test case is found as Tu = 3.3%.https://www.mdpi.com/2076-3417/15/11/5852boundary-layer transitional flowcomputational fluid dynamics (CFD)turbulence intensityfriction coefficient |
| spellingShingle | Muhsine Saru Hıfzı Arda Erşan Erhan Pulat The Effect of Turbulent Intensity on Friction Coefficient in Boundary-Layer Transitional Flat Plate Flow Applied Sciences boundary-layer transitional flow computational fluid dynamics (CFD) turbulence intensity friction coefficient |
| title | The Effect of Turbulent Intensity on Friction Coefficient in Boundary-Layer Transitional Flat Plate Flow |
| title_full | The Effect of Turbulent Intensity on Friction Coefficient in Boundary-Layer Transitional Flat Plate Flow |
| title_fullStr | The Effect of Turbulent Intensity on Friction Coefficient in Boundary-Layer Transitional Flat Plate Flow |
| title_full_unstemmed | The Effect of Turbulent Intensity on Friction Coefficient in Boundary-Layer Transitional Flat Plate Flow |
| title_short | The Effect of Turbulent Intensity on Friction Coefficient in Boundary-Layer Transitional Flat Plate Flow |
| title_sort | effect of turbulent intensity on friction coefficient in boundary layer transitional flat plate flow |
| topic | boundary-layer transitional flow computational fluid dynamics (CFD) turbulence intensity friction coefficient |
| url | https://www.mdpi.com/2076-3417/15/11/5852 |
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