Su2 real gas models’ performance predictions on a cold gas thruster

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10.47480-isibted.979351-1911069.pdf

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2021-04-01

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Aksel, Mehmet Haluk
Baran, Özgür Uğraş

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Soğuk gaz itki sistemleri 1960’lı yıllardan bu yana özellikle uyduların yörünge kontrolünde tercih edilen sistemler olmuşlardır.Yakıt tankındaki yüksek basıncın görev süresince azalması nedeniyle, tank içindeki yakıtta oldukça düşük sıcaklıklar gözlenmektedir. Ayrıca itici lülesinin çıkışında da, vakuma yakın basınçlara genleşen yakıtın sıcaklığı oldukça düşmektedir. Bu koşullar altında, itki sisteminin performansının tasarım sürecinde gerçekçi olarak tahmin edilebilmesi için, açık kaynaklı, sıkıştırılabilir akışkanlar için uygun bir hesaplamalı akışkanlar dinamiği aracı olan SU2 ’nun kullanılması kararlaştırılmıştır. Bu çalışmada, itki sisteminin doğası gereği karşılaşılan düşük sıcaklık ve basınç etkilerinin doğru modellenebilmesi adına, SU2 ’nun ideal gaz, van-der Waals ve Peng-Robinson gaz modelleri kullanılarak elde edilen performans tahminleri ile itici vakum odası performans test sonuçları karşılaştırılmıştır. İtici performans testleri için bu amaçla kurulan termal vakum odası test alt yapısı kullanılmıştır. İtici simulasyonları ve performans testleri, yakıt tankının nominal ve düşük sıcaklıkta koşulladırıldığı durumlar için yürütülmüştür. Elde edilen veriler, SU2 van der Waals gaz modelinin, her iki sıcaklık koşulunda da vakum odası performans testlerine en yakın sonuçları verdiğini göstermektedir.

Subject Keywords

Cold gas thruster, Real gas models, Vacuum chamber test, SU2, Soğuk gaz iticisi, Gerçek gaz modelleri, Vakum odası testi, SU2

URI

https://dergipark.org.tr/en/download/article-file/1911069
https://hdl.handle.net/11511/95057

Journal

Isı Bilimi ve Tekniği Dergisi

DOI

https://doi.org/10.47480/isibted.979351

Collections

Department of Mechanical Engineering, Article

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Citation Formats

M. H. Aksel and Ö. U. Baran, “Su2 real gas models’ performance predictions on a cold gas thruster,” Isı Bilimi ve Tekniği Dergisi, vol. 41, no. 1, pp. 77–88, 2021, Accessed: 00, 2021. [Online]. Available: https://dergipark.org.tr/en/download/article-file/1911069.