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Aerodynamic Characteristics of Ahmed Body with Inverted Airfoil Eppler 423 and Gurney Flap on Fastback Car

Automotive Experiences · Vol. 5 No. 3 (2022) · hlm. 355–370

DOI
10.31603/ae.7067
ISSN
2615-6636, 2615-6202
Terbit
2022-06-19
Penerbit
Universitas Muhammadiyah Magelang
Bahasa
en

Abstrak

The installation of aerodynamic devices, such as rear wings with the application of a Gurney flap, is very important to improve the performance of vehicles and can generate downforce and reduce slip when a car turns and brakes. The goal of this study was to determine the aerodynamic characteristics of the addition of a rear wing using an Eppler 423 airfoil, which was applied with a Gurney flap featuring variations in the angle of attack and the height of the Gurney flap. The rear wing was mounted on the Ahmed body with a rear slant angle of 15°, which is similar to the configuration on a fastback type car. This research was conducted by 3D modeling through computational fluid dynamics (CFD) simulation using ANSYS Student R18.2 by using ahmed body design. There are three variations in the angle of attack for the rear wing (0°, 7.5°, and 15°), as well as five variations in Gurney flap height of 0%, 0.5%, 1%, 1.5%, and 2% for the chord-line length. In this study, the best variation was found at an angle of attack of 15⁰ with a height of 2% C. From this configuration improved CL/CD ratio by 25.36% when compared to the results without a Gurney flap.

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  • Sebelas Maret University
  • State University of Malang
  • Universitas Widya Gama Malang
  • Padjadjaran University
  • Islamic University of Madinah
  • Universitas Wahid Hasyim
  • Universitas Sains Al-Qur'an
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Rekan penulisOrganisasiArtikel bersama
Yuki TrisnoajiState University of Malang6
Muhammad NizamSebelas Maret University4
Bhre Wangsa LengganaSebelas Maret University4
Marsya Aulia RizkitaState University of Malang4
Sunaryo SunaryoUniversitas Sains Al-Qur'an4
Mufti Reza Aulia PutraSebelas Maret University3
Mochamad Subchan MauludinUniversitas Wahid Hasyim3
Arjon TurnipPadjadjaran University2
Fitrian ImaduddinIslamic University of Madinah2
Gigih PriyandokoUniversitas Widya Gama Malang2
Purbo SuwandonoUniversitas Widya Gama Malang2
Muhammad Ilman Nur SasongkoState University of Malang2
Inayati InayatiSebelas Maret University2
Muhammad AzizThe University of Tokyo2
UbaidillahAfiliasi tidak diketahui2
Buruhan Haji ShameSebelas Maret University2
Widyanita HarwijayantiUniversitas Tunas Pembangunan2
Mohammed Makame HajiUniversity of Dar es Salaam2
Mochamad ChoifinUniversitas Maarif Hasyim Latif2
Endra JoeliantoBandung Institute of Technology1
Aditya Rio PrabowoSebelas Maret University1
Hanif Setya HananditaSebelas Maret University1
Oki MurazaPertamina (Indonesia)1
Budi SantosoSebelas Maret University1
Agus SartomoSebelas Maret University1
Elliza Tri MaharaniKongju National University1
Rahmad Rizki Nur ArifinUniversiti Teknologi Petronas1
Irfan BahiuddinUniversitas Gadjah Mada1
Kacuk Cikal NugrohoAkademi Inovasi Indonesia1
Saiful Amri MazlanUniversity of Technology Malaysia1

Afiliasi berasal dari OpenAlex; metadata OAI-PMH jurnal tidak memuatnya. Penulis tanpa ID OpenAlex dicocokkan berdasarkan nama, sehingga dua orang bisa tergabung atau satu orang bisa terpisah.

Sumber metadata: OAI-PMH (metadata jurnal) http://journal.unimma.ac.id/index.php/AutomotiveExperiences/oai, pertama di-harvest 8 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (oai_dc) 
<oai_dc:dc xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/  http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en">Aerodynamic Characteristics of Ahmed Body with Inverted Airfoil Eppler 423 and Gurney Flap on Fastback Car</dc:title>
	<dc:creator xml:lang="en">Arifin, Zainal</dc:creator>
	<dc:creator xml:lang="en">Suyitno, Suyitno</dc:creator>
	<dc:creator xml:lang="en">Tjahjana, Dominicus Danardono Dwi Prija</dc:creator>
	<dc:creator xml:lang="en">Juwana, Wibawa Endra</dc:creator>
	<dc:creator xml:lang="en">Rachmanto, Rendy Adhi</dc:creator>
	<dc:creator xml:lang="en">Brillianto, Chico Hermanu</dc:creator>
	<dc:creator xml:lang="en">Ubaidillah, Ubaidillah</dc:creator>
	<dc:creator xml:lang="en">Prasetyo, Singgih Dwi</dc:creator>
	<dc:creator xml:lang="en">Muhammad, Arinal Falah</dc:creator>
	<dc:creator xml:lang="en">Rosli, Mohd Afzanizam Mohd</dc:creator>
	<dc:subject xml:lang="en">Aerodynamic</dc:subject>
	<dc:subject xml:lang="en">Gurney flap</dc:subject>
	<dc:subject xml:lang="en">Computational fluid dynamics</dc:subject>
	<dc:description xml:lang="en">The installation of aerodynamic devices, such as rear wings with the application of a Gurney flap, is very important to improve the performance of vehicles and can generate downforce and reduce slip when a car turns and brakes. The goal of this study was to determine the aerodynamic characteristics of the addition of a rear wing using an Eppler 423 airfoil, which was applied with a Gurney flap featuring variations in the angle of attack and the height of the Gurney flap. The rear wing was mounted on the Ahmed body with a rear slant angle of 15°, which is similar to the configuration on a fastback type car. This research was conducted by 3D modeling through computational fluid dynamics (CFD) simulation using ANSYS Student R18.2 by using ahmed body design. There are three variations in the angle of attack for the rear wing (0°, 7.5°, and 15°), as well as five variations in Gurney flap height of 0%, 0.5%, 1%, 1.5%, and 2% for the chord-line length. In this study, the best variation was found at an angle of attack of 15⁰ with a height of 2% C. From this configuration improved CL/CD ratio by 25.36% when compared to the results without a Gurney flap.</dc:description>
	<dc:publisher xml:lang="en">Universitas Muhammadiyah Magelang</dc:publisher>
	<dc:date>2022-06-19</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journal.unimma.ac.id/AutomotiveExperiences/article/view/7067</dc:identifier>
	<dc:identifier>10.31603/ae.7067</dc:identifier>
	<dc:source xml:lang="en">Automotive Experiences; Vol. 5 No. 3 (2022); 355-370</dc:source>
	<dc:source>2615-6636</dc:source>
	<dc:source>2615-6202</dc:source>
	<dc:language>en</dc:language>
	<dc:relation>https://journal.unimma.ac.id/AutomotiveExperiences/article/view/7067/3370</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2022 Zainal Arifin, Suyitno Suyitno, Dominicus Danardono Dwi Prija Tjahjana, Wibawa Endra Juwana, Rendy Adhi Rachmanto, Chico Hermanu Brillianto, Ubaidillah Ubaidillah, Singgih Dwi Prasetyo, Arinal Falah Muhammad, Mohd Afzanizam Mohd Rosli</dc:rights>
</oai_dc:dc>