A Case Study For KCS Ship Self Propulsion Performance Via Computational Fluid Dynamics

Abstract

This paper presents a numerical investigation for validating KCS ship self propulsion performance characteristics by using RANS solution method and k-ω SST turbulance modeling. As the first stage of the self propulsion analysis examining the hull-propeller interaction, the propeller open water validation study is carried out. The aim of the propeller open water validation is verifying the correctness of the numerical results of propeller thrust and torque values obtained from numerical analysis. To estimate the propulsive performance of the KCS ship hull, the self propulsion variables thrust coefficient (KT) and torque coefficient (KQ) are calculated and local velocity wake field around the propeller and pressure distribution on the hull which are essantial for ship and propeller design are simulated. In order to solve the viscous flow around the propeller and hull more accurately, the optimum mesh element size is determined by performing a mesh sensitivity analysis during mesh generation process. This approach allows the reducing of numerical solution time and computer requirements to the optimum level by determining the most appropriate mesh size to be used in the model. In order to validate the numerical method used in the current study, the calculated values are compared with the test results.

Keywords

• Mesh sensitivity
• Open water
• Propeller-Hull interaction
• Self propulsion
• Validation

Supporting Institution

Yıldız Teknik Üniversitesi , Deniz Kuvvetleri Komutanlığı Dizayn Proje Ofisi Müdürlüğü

Ethical Statement

Yüksek Lisans Tez Danışmanım Prof. Dr. Ferhat DİKMEN ve eş danışmanım Doç. Dr. Müh. Alb. Hakan UÇAR sorumluluğunda tarafımca hazırlanan “A Case Study For KCS Ship Self Propulsion Performance Via Computational Fluid Dynamics” başlıklı çalışmada veri toplama ve veri kullanımında gerekli yasal izinleri aldığımı, diğer kaynaklardan aldığım bilgileri ana metin ve referanslarda eksiksiz gösterdiğimi, araştırma verilerine ve sonuçlarına ilişkin çarpıtma ve/veya sahtecilik yapmadığımı, çalışmam süresince bilimsel araştırma ve etik ilkelerine uygun davrandığımı beyan ederim. Beyanımın aksinin ispatı halinde her türlü yasal sonucu kabul ederim.

Thanks

Yüksek lisans çalışmam boyunca ve bu makalenin türetilmesinde yardım ve katkılarını esirgemeyen danışman hocam Prof. Dr. Ferhat DİKMEN’ e, çalışmamın her aşamasını yakından takip ederek bilgi ve tecrübelerini eksik etmeyen eş danışmanım Doç. Dr. Müh. Alb. Hakan UÇAR’ a ve değerli yardımlarıyla yanımda olan Dr. Müh. Bnb. Mustafa KÜLTÜR’ e teşekkürlerimi sunarım.

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