RESISTANCE CALCULATIONS ON FEED WATER BARGE USING CFD
Cybermarine, a leading design and engineering firm, sought to enhance its ship design capabilities by utilizing Computational Fluid Dynamics (CFD) for resistance calculations on a feed water barge. Traditional methods involving towing tank tests proved costly and time-consuming, prompting the firm to explore innovative solutions.
Introduction
Cybermarine, a leading design and engineering firm, sought to enhance its ship design capabilities by utilizing Computational Fluid Dynamics (CFD) for resistance calculations on a feed water barge. Traditional methods involving towing tank tests proved costly and time-consuming, prompting the firm to explore innovative solutions.
Challenges
The challenge lay in accurately predicting the barge’s performance in various conditions. Conducting experimental tests was resource-intensive, prompting the need for a more efficient and cost-effective solution. Cybermarine required a method to simulate complex flow patterns and resistance while ensuring accuracy comparable to physical tests.
Solutions
Embracing advancements in CFD technology, IDAC developed a 3D model of the barge using ANSYS. By employing the interfacecapturing
approach and Volume of Fluid method, we simulated free surface flow. The Shear Stress Transport model was utilized for turbulence modeling. The CFD domain replicated towing tank conditions, enabling a detailed analysis of wave patterns, water elevation, velocity streamlines, vectors, and pressure on the hull. This approach provided a comprehensive understanding of the barge’s hydrodynamics.
Benefits
Detailed Insights: CFD provided intricate details, including pressure and velocity contours, vectors, and gradients, offering a more comprehensive understanding of the barge’s behavior.
Optimized Designs: Once the basic model was validated, minor adjustments to geometry and boundary conditions led to optimized ship designs effortlessly, ensuring minimal effort for maximum efficiency.
Propeller Efficiency: Beyond resistance calculations, CFD allowed for the study of flow near the propeller, enabling the investigation of cavitation onset and propeller design for maximum efficiency.
By leveraging CFD, Cybermarine successfully overcame traditional challenges, empowering them to deliver innovative and optimized ship designs to their clients, marking a significant milestone in their engineering capabilities.