Hydrodynamic Investigation of a Submarine Moving Under Free Surface
Journal Title: Journal of ETA Maritime Science - Year 2019, Vol 7, Issue 3
Abstract
Submerged bodies are commonly used in many fields such as scientific researches, military and commercial applications. Especially in military applications, submarines have a significant role as a silent and deterrent vehicle. Contrary to popular belief, submerged bodies also operate in shallow depth that free surface effects come into play. This causes the visual identification of submarines while protecting them from sonar detection. This study focuses on the investigation of free surface effects on submarine hydrodynamics moving forward in different depths. The numerical calculations have been conducted at different Reynolds numbers ranging from 1.5x107 to 3.5x107 for both bare and appended forms of DARPA Suboff. A commercial CFD solver has been used to solve URANS equations with k-ε turbulence model. The numerical approach has first been verified and validated with the available experimental data. Later, the numerical results have been discussed in terms of total resistance, resistance components and free surface deformations. It has been concluded that the submergence depth has a significant role on resistance components for depth Froude number larger than 0.7 and the appendages have little effect on free surface deformations in all depths.
Authors and Affiliations
Ali DOĞRUL
Keywords
Related Articles
- EP ID EP648649
- DOI 10.5505/jems.2019.42204
- Views 84
- Downloads 0
Application of Alternative Maritime Power (AMP) Supply to Cruise Port
The International Maritime Organization, the European Union Council and the US government force ship owners to take necessary measures through international conventions and national legislation to minimize ship-based emi...
Marine Accident Analysis by Using Pairwise Comparison
This paper investigates the process of marine accident analysis for the official interpretation to define the rate of defects of vessels in the intended case and proposes the pairwise comparison approach which is frequen...
Karadeniz Tipi Balıkçı Teknesinin İmalat Süre ve Süreçlerinin Benzetim Tekniği ile Modellenmesi
Bu çalışmada, Karadeniz tipi bir balıkçı teknesinin üretim süreci detaylı olarak incelenmiş ve SİMİO simülasyon tabanında bir modeli oluşturulmuştur. Oluşturulan bu model ile Karadeniz tipi balıkçı teknesinin üretim süre...
Efficiency in Dirty Tanker Market
The maritime industry is highly capital intensive. From this point of view, it is very important that the return of the investments made is healthy. This can be achieved by efficiency of the freight market. The aim of th...
Dry Port Development: A Systematic Review
Studies on dry ports as nodes in multimodal transport have been expanded to decrease the mounting congestion on seaports. The principal objective of this study is to inspect how dry port researches have been conducted fr...