Abstract:
This presentation outlines a comprehensive framework for the concept exploration and development of naval ships, utilizing a multi-objective and multi-disciplinary optimization approach. The core of this methodology is a ship synthesis model that integrates various physics-based analyses to evaluate design alternatives against competing objectives of mission effectiveness, cost, and risk. A crucial role is played by Computational Fluid Dynamics (CFD), which is employed as a "first-principle analysis code" to predict essential hydrodynamic performance characteristics. Specifically, CFD-based tools and modules like "HoltropResistance" and "SWAN" are used to calculate wave-making resistance and seakeeping performance for various hull forms, including conventional monohulls and multi-hull designs. Furthermore, the methodology incorporates vulnerability and shock analysis using tools such as LSDYNA, which simulates fluid-structure interaction phenomena. By embedding these high-fidelity CFD simulations within the larger optimization loop, the framework enables a more accurate and robust exploration of the design space, ensuring that early-stage decisions are informed by realistic performance predictions. The process is illustrated through a detailed case study on the conceptual design of a new Unmanned Combat Air Vehicle Carrier (CUVX).
