The Investigation of Flow Characteristic Around A Bus Model by CFD Method and Improvement of Drag Force by Passive Flow Control Method

Basit Öğe Kaydı
dc.contributor.authorBayindirli, Cihan
dc.contributor.authorCelik, Mehmet
dc.contributor.authorDemiralp, Mehmet
dc.date.accessioned2024-11-07T13:24:57Z
dc.date.available2024-11-07T13:24:57Z
dc.date.issued2018
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractIn this study, aerodynamic drag coefficient of 1/64 scaled bus model was determined by the Computational Fluid Dynamics (CFD) method. Flow analyzes were performed at 15 m/s, 20 m/s, 25 m/s ye 30 m/s in x direction, between the range of 173000-346000 Reynolds numbers. Flow analysis was made in Fluent (R) program. The aerodynamic drag coefficient (CD) of the bus model was determined as 0.657 on average, the distribution of total drag was determined as pressure-friction based. After the flow visualization, the areas are detected where forms aerodynamic drag on the model bus. A triangular section flow control element has been developed to improve the flow structure and decrease the pressure based drag. The flow control element is an equilateral triangle with a diameter of 15 mm and positioned on the front bumper of the model bus. The aerodynamic drag coefficient of model 1 bus was determined as 0.623. With this passive flow control method, the aerodynamic drag coefficient improved by %5.27. The effect of this improvement on fuel consumption is about 3 % at the high vehicle speed. The effect of this aerodynamic improvement on the annual fuel consumption of a bus has been evaluated.
dc.identifier.doi10.2339/politeknik.403993
dc.identifier.endpage795
dc.identifier.issn1302-0900
dc.identifier.issn2147-9429
dc.identifier.issue4
dc.identifier.startpage785
dc.identifier.urihttps://doi.org/10.2339/politeknik.403993
dc.identifier.urihttps://hdl.handle.net/11480/14425
dc.identifier.volume21
dc.identifier.wosWOS:000448383600004
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.language.isotr
dc.publisherGazi Univ
dc.relation.ispartofJournal of Polytechnic-Politeknik Dergisi
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241106
dc.subjectThe drag force coefficient
dc.subjectpassive flow control
dc.subjectflow control part
dc.subjectComputational Fluid Dynamics (CFD)
dc.titleThe Investigation of Flow Characteristic Around A Bus Model by CFD Method and Improvement of Drag Force by Passive Flow Control Method
dc.typeArticle

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu