The Numerical Investigation of Aerodynamic Structures of Truck and Trailer Combinations

Öz

In this study, aerodynamic structures of the heavy vehicle consisting of truck and trailer was investigated with computational fluid mechanics method. The force measurement were performed on the model car and aerodynamic drag coefficient (CD) were determined numerically in 4 different speeds on the Fluent® program. Numerical analysis of flow were made on the 59 000 - 844 000 Reynolds number. The effect of trailer additional to truck was determined to aerodynamic drag coefficient. The friction and pressure induced distributions were determined of total aerodynamic resistance. The images of flow structure were obtained around the truck trailer. The zones that was forming aerodynamic resistance were determined.

Anahtar Kelimeler

• Aerodynamic drag coefficient (CD), Fluent®, turbulent flow, truck and trailer

Aerodinamik Kamyon Yapıları ve Treyler Birleşmeleri Sayısal İncelenmesi

Öz

Bu çalışmada, kamyon ve treyler oluşan ağır aracın aerodinamik yapısı hesaplamalı akışkanlar mekaniği yöntemi ile araştırılmıştır. Kuvvet ölçüm model araba yapıldı ve aerodinamik sürtünme katsayısı (CD) Fluent® programı 4 farklı hızlarda sayısal belirlendi. 844 000 Reynolds sayısı - akışının Sayısal analiz 59 000 yapılmıştır. Kamyon ek römork etkisi aerodinamik sürükleme katsayısı tespit edildi. Sürtünme ve basınç kaynaklı dağılımları toplam aerodinamik direnç belirlenmiştir. Akış yapısının görüntüleri kamyon römork etrafında elde edilmiştir. Aerodinamik direnç oluşturan edildi bölgeleri tespit edilmiştir.

Anahtar Kelimeler

• Aerodinamik sürtünme katsayısı (CD),Fluent®,türbülanslı akış,kamyon ve treyler

Kaynakça

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