Sascha Kosleck

A strip-theory-driven DeepONet surrogate for operator learning of wave-added resistance of advancing monohull ships

Arash Abbasnia, Hadi Amlashi, Mostafa Amini-Afshar, Sascha Kosleck

Accurate prediction of wave-added resistance is essential during preliminary ship design and performance assessment. This study presents a strip-theory-driven DeepONet surrogate model for predicting the wave-added resistance of advancing monohull ships across a broad range of hull geometries, Froude numbers, heading angles, …

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Verbundprojekt: MarTERA-MuWIN - Multi-use floating offshore topside structure for wind energy; Teil-Vorhaben: MODULEX - Module development and experimental verification

Sascha Kosleck, Arash Abbasnia

Im Rahmen des Verbundprojekts MarTERA-MuWIN - Multi-use floating offshore topside structure for wind energy wurde im Teilvorhaben MODULEX eine modulare schwimmende Offshore-Unterstruktur für multifunktionale Energieplattformen entwickelt und experimentell untersucht. Ziel war es, ein skalierbares Plattformkonzept zu entwerfen, das sowohl für Offshore-Windenergieanwendungen als …

Approaches for Addressing Hydrostatic Nonlinearity in Cylindrical Floating Platforms and Their Influence on Hydrostatic Equilibrium and Undamped Natural Period Estimation

Ghaith Esber, Sascha Kosleck, Christoph Otto

Abstract Hydrostatic restoring forces have a decisive influence on the static and dynamic behavior of floating structures. They exert a significant impact on the stability, integrity and functionality of such structures. Although these forces and the stiffness they induce can be considered …

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The General Nonlinear Stiffness Matrix of Taut Mooring Systems and Suspension Systems of Cable-Connected Floater-Keel Platforms

Ghaith Esber, Sascha Kosleck

Abstract The static and dynamic behavior of taut-leg and tension leg platforms (TLPs) are highly characterized by the stiffness properties of their mooring systems. That also applies to the innovative offshore floating wind turbine platforms composed of a floater connected to a …

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Statistical ULS Evaluation of Tension Leg Slackline for Lightweight TLP Platforms in Unidirectional Long Crest Wave Using Linear and Second-Order Potential Flow Solvers

Arash Abbasnia, Sascha Kosleck, Hauke Hartmann, Frank Adam

Abstract Lightweight tension leg platforms whose ratio of mass to buoyancy is lower than 0.80 on average have been used commonly as exchange power stations supporting offshore energy production plants. The outstanding difference between mass and buoyancy leads to a massive pretension …

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Investigation of the Pitch Stability of an Underwater Glider that uses the Passive Flapping- Foil Glide Concept

Jonas Thyrann, Jonas Pabst, Sascha Kosleck

In the present paper, the pitch stability of an underwater glider based on the passive flapping-foil glide concept is investigated. Throughout the investigations, criteria for correct trim adjustment and pitch stability are established, and a calculation model for the theoretical stability analysis …

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High-Pressure Performance Evaluation of Crystal Quartz and MEMS Oscillators for Pressure-Tolerant Systems in Deep-Sea Applications

Louis Leon Rautmann, Sascha Kosleck

The present study contributes to the ongoing systematic investigation of the output behavior of electronic components in pressure-tolerant systems (PTS). Specifically, this work examines the performance of crystal quartz and silicon-based MEMS oscillators under elevated ambient pressure. A standardised testing methodology was …

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OTC-Flying_Argo - Unterwassergleiter der nächsten Generation; Teilvorhaben A & C

Sascha Kosleck, Jonas Thyrann, Dirk Buchler, Romil Antala

[no abstract available]

OTC-Motion_Probe - Entwicklung eines autonomen in-situ Sensorsystems zum Monitoring von Objektbewegungen durch Seegangsbelastungen; Teilvorhaben B

Sascha Kosleck, Michael Wenrich

[no abstract available]

Abschlussbericht OTC-Base - Teilbericht Lehrstuhl für Meerestechnik, Universität Rostock

Louis Rautmann, Sascha Kosleck

[no abstract available]

Optimization of an Open-Source Based Turbidity Sensor for Deep-Sea Mining Application

Henrik Langosch, Christoph Strehse, Sascha Kosleck

This paper presents the optimization of an open-source-based turbidity sensor designed for monitoring turbidity in the context of deep-sea mining. The existing sensor exhibits an insufficiently low sensitivity in low turbidity ranges and is based on an overly complex manufacturing method. To …

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Development and Evaluation of Pressure-Tolerant Stepper Motors for Underwater Robotics Applications

Jonas Thyrann, Romil Antala, Georg Foedtke, Jonas Pabst et autres

The present paper describes the approach to adapt commercially available NEMA17 stepper motors to make them suitable for long-term underwater use. The resulting subsea actuators are intended to provide a user-friendly and cost-effective alternative to hydraulic systems and servo motors for basic …

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