Shafi, Muhammad Haekal (2021) Analisa Numerik Pengaruh Airofil Cascade Winglet Terhadap Performa Aerodinamika Pada Front Wing Multi Element Mobil Formula SAE Student Mark 2.0 Anargya ITS Team. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Tahun 2019, Anargya ITS Team mewakili Institut Teknologi Sepuluh Nopember mengikuti perlombaan Student Formula Japan (SFJ) di kategori EV (Electric Vehicle). Kompetisi ini diadakan oleh Society of Automotive Engineer (SAE) di Jepang. Pada perlombaan Student Formula Japan (SFJ) terdapat dua kategori lomba yaitu static event dan dynamic event. Dynamic event merupakan event balapan yang memiliki banyak sekali jenis track. Oleh karena itu, banyak tim sudah mengembangkan mobilnya ditambah dengan device aerodinamika pada bagian depan, salah satunya front wing yang ditambah dengan device Front Cascade Winglets. Penggunaan front wing dengan penambahan cascade winglets tersebut pada mobil FSAE berfungsi sebagai suatu device yang dapat mengurangi drag pada roda depan dan menghasilkan gaya lift negative atau downforce pada mobil untuk menghasilkan tingkat cengkraman yang lebih besar pada mobil. Selain itu juga sangat penting dalam mengontrol aliran udara dari depan setelah diterima front wing yang selanjutnya menuju ke komponen lain di mobil, yang secara tidak langsung dapat mengurangi aliran kotor berupa wake dan turbulen yang terbentuk disekitar roda depan.
Metode yang dilakukan pada studi ini adalah studi numerik dua dimensi pada desain front wing mobil Anargya dengan aliran steady dan incompressible menggunakan software ANSYS Fluent. Geometri yang diuji adalah desain front wing mobil Anargya standard dan dengan penambahan airfoil Cascade Winglets. Simulasi dilakukan dengan variasi jarak offset leading edge airfoil Cascade Winglets dengan airfoil Main Element Of/c= 0, Of/c= 0.075, Of/c= 0.15, Of/c= 0.225, variasi angle of attack 3, 6, 9, 12, dan variasi kecepatan aliran 13.89 m/s dan 19.44 m/s dengan menggunakan model turbulensi k-ϵ Realizable. Boundary condition yang digunakan adalah velocity inlet, pressure outlet, no-slip moving wall pada ground, dan wall untuk permukaan atas dan permukaan benda yang di uji. Meshing menggunakan mesh tipe Structured-Mesh Hexahedral.
Hasil penelitian yang telah dilakukan menunjukkan bahwa penambahan airfoil cascade winglet pada front wing dapat meningkatkan nilai gaya negative lift dan gaya drag yang dihasilkan, dengan konfigurasi optimum didapatkan pada variasi of/c=0, dan of/c=0.075 dengan AOA=9^° dan AOA=12^°. Penambahan cascade winglet juga memberikan pengaruh terhadap penurunan nilai C_D pada roda depan dengan penurunan paling kecil sebesar -4.05% pada 〖Re〗_C=3.59 x 10^05, dan sebesar -6.38% pada 〖Re〗_C=4.89 x 10^05.
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In 2019, Anargya ITS Team representing the Sepuluh
Nopember Institute of Technology participated in the Student
Formula Japan (SFJ) competition in the EV (Electric Vehicle)
category. This competition is held by the Society of Automotive
Engineers (SAE) in Japan. In the Student Formula Japan (SFJ)
competition, there are two competition categories, namely static
events and dynamic events. Dynamic events are racing events that
have many types of tracks. Therefore, many teams have developed
their cars plus aerodynamic devices on the front, one of which is
the front wing which is added with the Front Cascade Winglets
device. The use of the front wing with the addition of cascade
winglets on the FSAE car functions as a device that can reduce
drag on the front wheels and generate negative lift or downforce
on the car to produce a greater level of grip on the car. In addition,
it is also very important in controlling the air flow from the front
iv
after receiving the front wing which then goes to other components
in the car, which indirectly reduces the gross flow in the form of
wake and turbulence that forms around the front wheels.
The method used in this study is a two-dimensional
numerical study of the Anargya car front wing design with a steady
and incompressible flow using ANSYS Fluent software. The
geometry tested is the standard Anargya front wing design and with
the addition of the Cascade Winglets airfoil. Simulations were
carried out by varying the distance of the offset leading edge airfoil
Cascade Winglets with airfoil Main Element Of / c = 0, Of / c =
0.075, Of / c = 0.15, Of / c = 0.225, variations in angle of attack 3,
6, 9, 12. , and flow velocity variations of 13.89 m / s and 19.44 m /
s using the Realizable k-ϵ turbulence model. The boundary
conditions used are velocity inlet, pressure outlet, no-slip moving
wall on the ground, and walls for the top surface and the surface
of the object being tested. Meshing uses a Structured-Mesh
Hexahedral type.
From the simulation that have been done show that the
addition of an airfoil cascade winglet on the front wing can
increase the value of the negative lift force and the drag force, with
the optimum configuration obtained at of/c=0, dan of/c=0.075 with
AOA=9
° and AOA=12°
. The Cascade winglet has also an effect on
decreasing the
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Aerodinamika, Cascade winglets , ANSYS Fluent, Front wing, FSAE, Analisa Numerik, Simulasi, Coefficient of lift, Coefficient of drag. |
| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL521 Aerodynamics, Hypersonic. |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Muhammad Haekal Shafi |
| Date Deposited: | 27 Jul 2021 08:03 |
| Last Modified: | 26 Sep 2024 04:08 |
| URI: | http://repository.its.ac.id/id/eprint/84512 |
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