Conjugate heat transfer analysis of a small turbojet enginecombustion chamber by using computational fluid dynamics
Başlık çevirisi mevcut değil.
- Tez No: 798143
- Danışmanlar: DR. TOM VERSTRAETE
- Tez Türü: Yüksek Lisans
- Konular: Metalurji Mühendisliği, Metallurgical Engineering
- Anahtar Kelimeler: Conjugate Heat Transfer (CHT), Combustion Chamber, Multiphase Flow, Lagrangian Approach, Boundary Layer Thickness
- Yıl: 2016
- Dil: İngilizce
- Üniversite: Queen Mary Unıversıty Of London
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: Belirtilmemiş.
Özet
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Özet (Çeviri)
Turbojet engines have been in use since 1937. Each material used in this technology is very crucial and expensive. One of the most important component of turbojet engines is combustion chamber. Developments in this technology – high compression ratios- caused high temperature levels inside of combustion chamber and liner wall as well. To determine and to evaluate its temperaturedependent properties of the liner wall temperature is very crucial. In this work, a number of simulations have been done to see the parameters affecting liner wall temperature. The results were compared to experimental values obtained from tests. Firstly, the importance of gas properties as temperature-dependent was seen. Then, the fuel was used in gas and liquid phase, the liquid phase was decided to be used because evaporation energy and liquid flow affected flow and the magnitudes of temperature and velocity. Moreover, different combustion models by applying test case conditions were used and compared to experimental values. As a result, Presumed Probability Density Function combustion model was decided to be used in further works. Furthermore, different boundary layer conditions were used and compared to experimental values. As a result, the best compatible case with the test case was simulated in take-off conditions. The results obtained from this simulation was evaluated.
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