: Submarine Hull Complete CAD-to-Manufacturing Engineering Workflow

A full-cycle mechanical engineering project covering conceptual design, hydrodynamic simulation, structural validation, and physical prototyping of a submarine hull, demonstrating an end-to-end product development process from concept to manufactured part. 1. CAD Modeling Designed the complete submarine hull geometry in SolidWorks, focusing on hydrodynamically efficient form factors to minimize drag while maintaining internal volume and structural integrity requirements. Modeled with parametric design practices to allow rapid geometry iteration during the simulation phase. 2. CFD Analysis Ran computational fluid dynamics simulations in ANSYS Fluent to evaluate hull hydrodynamic performance, including drag coefficient analysis, flow separation behavior, and pressure distribution across the hull surface at varying operating speeds and depths. Mesh independence studies and convergence checks were used to ensure result reliability, with iterative geometry refinement based on flow visualization findings. 3. FEA Analysis Performed structural finite element analysis in ANSYS Mechanical to assess hull integrity under hydrostatic pressure loading at depth, identifying stress concentration zones and validating factor-of-safety margins against material yield limits. This step ensured the hull design could withstand real operating conditions before committing to manufacturing. 4. 3D Printing / Prototyping Translated the validated CAD design into a manufacturable 3D-printed scale model using FDM printing (PLA/ABS), applying design-for-additive-manufacturing (DFAM) principles to adapt the geometry for printability — wall thickness, support structure minimization, and orientation optimization — while preserving the hydrodynamic and structural characteristics validated in simulation. Outcome: A fully validated design pipeline — from initial CAD geometry through CFD-driven hydrodynamic optimization, FEA-based structural verification, to a physically realized 3D-printed prototype — demonstrating complete product development competency across simulation and manufacturing domains.