Publication: Konvoy iki hafif ticari taşıtın arasındaki mesafenin yakıt tüketimine etkisinin sayısal incelenmesi
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Date
2024-01-15
Authors
Çilingiroğlu, Ulaş Cankan
Dönmez, Muhammed
Karamangil, Mehmet İhsan
Authors
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Journal ISSN
Volume Title
Publisher
Bursa Uludağ Üniversitesi
Abstract
Dünyada enerji eldesi ve tüketimi günümüzün en önemli sorunlarından biridir. Taşıtlarda enerji tüketimi de otomotiv endüstrisinin başlıca odaklandığı konulardandır. Taşıt sayısının artışının ister istemez sebep olduğu konvoy sürüşle enerji tüketimi azaltılabilir. Bu çalışmada, tek hafif ticari taşıt ve farklı taşıtlar arası mesafelerde konvoy iki taşıt için sürükleme ve kaldırma katsayıları sayısal olarak belirlenmiştir. Bu sayısal çalışma bire bir taşıt boyutlarında ve %2,6 blokaj oranında tasarlanan rüzgar tünelinde 90 km/sa hava giriş hızında Realizable k-ε türbülans modeli kullanılarak hesaplamalı akışkanlar dinamiği metodolojisi ile gerçekleştirilmiştir. Sonuç olarak taşıtlar arası mesafe arttıkça iki taşıtın ortalama sürükleme ve kaldırma katsayıları arttı. Konvoy sürüşte taşıtlar arasında mesafe olmaması durumunda tek taşıta göre öndeki taşıtın yakıt tüketimi %26 düşerken arkadaki taşıtın %4 artmıştır.
Energy production and consumption in the world are one of the most important problems of today. Energy consumption in vehicles is also one of the main focuses of the automotive industry. Energy consumption can be reduced by convoy driving, which is inevitably caused by the increase in the number of vehicles. In this study, the drag and lift coefficients of the light commercial vehicle model are numerically determined for two vehicles at different inter-vehicle distances and isolated vehicle. The numerical simulations are conducted in a wind tunnel designed with the exact dimensions of a isolated light commercial vehicle, with a 2.6% blockage ratio, and a wind speed of 90 km/h, using the realizable k-ε turbulence model. As a result, as the inter-vehicle distance increased, the average drag and lift coefficients of the two vehicles increased. In the absence of inter-vehicle distance in convoy driving, the fuel consumption of the lead vehicle decreased by 26%, while the rear vehicle increased by 4% compared to isolated vehicle.
Energy production and consumption in the world are one of the most important problems of today. Energy consumption in vehicles is also one of the main focuses of the automotive industry. Energy consumption can be reduced by convoy driving, which is inevitably caused by the increase in the number of vehicles. In this study, the drag and lift coefficients of the light commercial vehicle model are numerically determined for two vehicles at different inter-vehicle distances and isolated vehicle. The numerical simulations are conducted in a wind tunnel designed with the exact dimensions of a isolated light commercial vehicle, with a 2.6% blockage ratio, and a wind speed of 90 km/h, using the realizable k-ε turbulence model. As a result, as the inter-vehicle distance increased, the average drag and lift coefficients of the two vehicles increased. In the absence of inter-vehicle distance in convoy driving, the fuel consumption of the lead vehicle decreased by 26%, while the rear vehicle increased by 4% compared to isolated vehicle.
Description
Keywords
Hesaplamalı akışkanlar dinamiği, Konvoy, Sürüklenme katsayısı, Kaldırma katsayısı, Özgül yakıt tüketimi, Computational fluid dynamics, Convoy, Drag coefficient, Lift coefficient, Specific fuel consumption
Citation
Çilingiroğlu, U. C. vd. (2024). ''Konvoy iki hafif ticari taşıtın arasındaki mesafenin yakıt tüketimine etkisinin sayısal incelenmesi''. Uludağ Üniversitesi Mühendislik Fakültesi Dergisi, 29(1), 37-50.