Results 1 to 10 of about 101 (80)
Hydrodynamics of DARPA SUBOFF Submarine at Shallowly Immersion Conditions [PDF]
TransNav, 2019 Recently, the submarine missions are often evolving into operating to littoral areas, which require operating in shallow water. Such shallow water operations strongly contrast with the traditional ones due to the effect of a close to free water surface ...
Dobrin Efremov
exaly +4 more sources
Numerical Investigation of Self-Propulsion Performance and Noise Level of DARPA Suboff Model
Journal of Marine Science and Engineering, 2023 Propulsion noise is an enduring problem of significant military and environmental importance. Hence, it is crucial to investigate propeller noise characteristics.
Chunyu Guo, Xu Wang, Guo Chunyu
exaly +4 more sources
Journal of Eta Maritime Science, 2023 In this study, the maneuvering forces and moments of the DARPA Suboff submarine model were determined under static drift condition using computational fluid dynamics (CFD) methods.
Hasan Öztürk +2 more
doaj +3 more sources
SciSubmarines are required to have good performance, which is influenced by their type of hull, hull conditions, and operational conditions. This study compares the resistance between a Modified-U209 (U209) submarine and the DARPA Suboff.
I Ketut Aria Pria Utama +1 more
exaly +3 more sources
Hydrodynamic parameter estimation of DARPA SUBOFF using dynamic pitch maneuver
Journal of Engineering and Applied ScienceThe DARPA SUBOFF model is widely used for studying underwater vehicle performance, and many researchers have explored its behavior through experiments and simulations.
Imran Mushtaque +5 more
doaj +4 more sources
Comparisons between seabed and free surface effects on underwater vehicle hydrodynamics
International Journal of Naval Architecture and Ocean Engineering, 2022 This paper presents a numerical study on the hydrodynamic coefficients of the DARPA SUBOFF hull when deeply submerged and near the seabed. The CFD-based model was validated with experimental data, namely experiments involving the SUBOFF and BB2 ...
Xavier Ling +4 more
doaj +1 more source
Theoretical and Applied Mechanics Letters, 2022 Flow around a real-life underwater vehicle often happens at a high Reynolds number with flow structures at different scales from the boundary layer around a blade to that around the hull.
Zhideng Zhou +3 more
doaj +1 more source
SCALE EFFECT ON THE LINEAR HYDRODYNAMIC COEFFICIENTS OF DARPA SUBOFF
Journal of Naval Sciences and Engineering, 2023 As well known, forces and moments acting on a ship are functions of Froude and Reynolds numbers. As a ship gets larger in size, these two numbers grow, which leads to different flow regimes around the hull. However, the state-of-the-art in maneuvering calculations is to consider the hydrodynamic coefficients as constants for model and full ship scales.
Furkan KIYÇAK, Ömer Kemal KINACI
openaire +2 more sources
Similarity analysis of the flow-induced noise of a benchmark submarine
Frontiers in Physics, 2023 As one of the three major noise sources of submarines, flow-induced noise plays a key role for the stealth capability of submarines. Several research studies based on experiment or simulation have evaluated the sound radiation from the scale model ...
Yao Qu +3 more
doaj +1 more source
Assessment of Numerical Captive Model Tests for Underwater Vehicles: The DARPA SUB-OFF Test Case
Journal of Marine Science and Engineering, 2023 During the early design stage of an underwater vehicle, the correct assessment of its manoeuvrability is a crucial task. Conducting experimental tests still has high costs, especially when dealing with small vehicles characterized by low available budget.
Vito Vasilis Zheku +4 more
doaj +1 more source