Journals / Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi / 2026 / Cilt: 7 Sayı: 3

The Impact of Using Dimpled Surfaces on Ahmed Body on The Flow Characteristics

Ahmed Cisminde Çukurlu Yüzeyler Kullanmanın Akış Karakteristiklerine Etkisi

Veli Kemal Aydın(Kırpart Otomotiv Sanayi A. Ş)0009-0000-9066-0974
Mustafa Atakan Akar(ÇUKUROVA ÜNİVERSİTESİ, MÜHENDİSLİK-MİMARLIK FAKÜLTESİ, OTOMOTİV MÜHENDİSLİĞİ BÖLÜMÜ)
Oğuz Baş(AMASYA ÜNİVERSİTESİ)0000-0003-2301-2306
Umut Kumlu(ÇUKUROVA ÜNİVERSİTESİ)0000-0001-7624-6240
Pages
1358–1373
Publication Date
2024-06-25
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Moreover, the applicability and manufacturability factors were also evaluated in terms of implementing the dimpling modification to today’s current road vehicles.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Vehicle aerodynamics which directly affects fuel consumption values in vehicles has great importance in terms of vehicle stability, acceleration ability, vehicle noise, and environmental pollution.
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Key Findings & Data:This study investigates the effect of a passive drag reduction technique which is known as dimple surface, on Ahmed car model with a 35° slant angle.
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Conclusion & Impact:Moreover, the applicability and manufacturability factors were also evaluated in terms of implementing the dimpling modification to today’s current road vehicles.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Sürükleme kuvveti katsayısı · Kaldırma kuvveti katsayısı · Araç aerodinamiği

Abstract

Vehicle aerodynamics which directly affects fuel consumption values in vehicles has great importance in terms of vehicle stability, acceleration ability, vehicle noise, and environmental pollution. Ahmed car model is one of the most important generic models, so this popular car model is widely used in the literature on fluid mechanics and vehicle aerodynamics studies. This study investigates the effect of a passive drag reduction technique which is known as dimple surface, on Ahmed car model with a 35° slant angle. The flow control methods were applied numerically also these methods were compared with similar works. Analysis made in this study were conducted with 2.4 million cell numbers and the maximum drag reduction is 3.5 % with optimum dimple surfaces. Moreover, the applicability and manufacturability factors were also evaluated in terms of implementing the dimpling modification to today’s current road vehicles.

Özet

Araç yakıt tüketim değerlerini doğrudan etkileyen araç aerodinamiği aynı zamanda araç stabilitesi, hızlanma yeteneği, araç sesi ve çevre kirliliği açısından büyük öneme sahiptir. Ahmed cismi jenerik araç modeli akışkanlar mekaniği ve araç aerodinamiği konusunda yapılan çalışmalarda çok fazla kullanılmaktadır. Akış kontrol yöntemlerinin numerik olarak araştırıldığı bu çalışmada sonuçlar deneysel veriler referans alınarak doğrulanmıştır. Bu çalışmada çukurcuklama olarak bilinen pasif akış kontrol yöntemi 35°arka eğimli Ahmed modeli üzerinde test edilmiştir. Analizler 2.4 milyon mesh sayısı ile çözümlenmiş olup, çukurcuklu yüzeylerin kullanılması ile en iyi modelde sürükleme kuvveti katsayısında 3.5% azalma elde edilmiştir. Aynı zamanda bu çalışmanın aerodinami açısından anlamlı olması için uygulanan bu çukur yüzeylerin günümüz araçlarına uygulanabilirliği ve üretilebilirlik faktörü de değerlendirilmiştir.

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Cite This Article

Aydın, V. K., Akar, M. A., Baş, O., Kumlu, U. (2024). The Impact of Using Dimpled Surfaces on Ahmed Body on The Flow Characteristics. Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi, Cilt: 7 Sayı: 3, 1358–1373. https://doi.org/10.47495/okufbed.1387185

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