Hamza, Bakdam Khoirul (2021) Desain Dan Analisis Aerodinamika Undertray Pada Mobil Formula Student Sapuangin Speed. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kompetisi FSAE Japan diselengarakan tiap tahun, melombakan static events dan dynamic events. Pada dynamic events memiliki beberapa bagian yaitu acceleration, skidpad, autocross dan endurance. Menunjang pada dynamic events kendaraan FSAE memiliki beberapa parameter untuk mendapatkan nilai tinggi salah satunya aerodynamics package. Pada aerodynamics package memiliki komponen yang paling berpengaruh pada FSAE yaitu undertray. Menggunakan k-ω turbunlance model dalam analisis 2D dan 3D untuk mengetahui pengaruh undertray pada mobil. Menghasilkan undertray 2D yang memiliki nilai rasio C_l/ C_d tertinggi pada sudut inlet 1^∘ dan sudut diffuser 6^∘ dengan nilai C_d sebesar 0.031 dan C_l sebesar -1.594. sedangkan undertray 3D beserta mobil didapatkan nilai rasio C_l/ C_d tinggi kecepatan 22.5 m/s pada separate fin 2 sebesar 1.703, kecepatan 11.7 m/s pada separate fin 1 sebesar 1.751, dan kecepatan 5 m/s pada separate fin 1 sebesar 0.996. Pada perhitungan laptime didapatkan waktu tercepat acceleration menggunakan undertray separate fin 2 sebesar 7.382 s. Sedangkan tercepat pada skidpad, autocross, dan endurance menggunakan undertray separate fin 4 sebesar 12.510 s, 68.757 s, dan 80.043 s.
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The FSAE Japan competition is held every year, contesting static events and dynamic events. In dynamic events, there are several parts among others acceleration, skidpad, autocross and endurance. Supporting dynamic events, FSAE vehicles have several parameters to get a high value one of which is the aerodynamics package. The aerodynamics package has the most influential component on the FSAE, namely the undertray. Using the k-ω turbulence model in 2D and 3D analysis to determine the effect of the undertray on the car. Produces a 2D undertray which has the highest C_l/ C_d ratio at the inlet angle of 1^∘ and the diffuser angle of 6^∘ with a C_d value of 0.031 and a C_l of -1.594. While the 3D undertray and the car obtained a high C_l/ C_d ratio with a speed of 22.5 m/s on separate fin 2 of 1.703, a speed of 11.7 m/s on separate fin 1 of 1.751, and a speed of 5 m/s on separate fin 1 of 0.996. In the lap time calculation, the fastest acceleration time using undertray separate fin 2 is 7.382 s. While the fastest in skidpad, autocross, and endurance using a separate fin 4 undertray of 12,510 s, 68,757 s, and 80,043 s.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | FSAE, Undertray, CFD, Laptime |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA357 Computational fluid dynamics. Fluid Mechanics T Technology > TL Motor vehicles. Aeronautics. Astronautics |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis |
| Depositing User: | Bakdam Khoirul Hamza |
| Date Deposited: | 09 Sep 2021 01:52 |
| Last Modified: | 02 Jan 2024 02:37 |
| URI: | http://repository.its.ac.id/id/eprint/91862 |
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