DMS specializes in advanced analysis. We possess extensive background in the theory and practice with a range of computer simulation and analysis techniques. We have experience in multiple simulation software packages. We learned the tricks of the trade to ensure efficient project execution.
More important, we are experts in practical and relevant analysis. We don’t just report a string of useless numbers. We explain their significance. We relate the computer back to the real world. We keep our analysis grounded in reality, focused on the important part: your ship.
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At DMS, we also know that computers can lie. Simulation based analysis does not guarantee accuracy. The computer happily produces garbage without the watchful eye of an experienced engineer. DMS remains rigorous in our approach to simulation quality. We routinely expand our library of validation studies in both FEA and CFD. And we perform mesh independence studies on every single simulation. Every simulation report includes a quantification of simulation error. We tell you exactly how much to trust the simulation and what safety factors to apply. This delivers ultimate confidence, not in the computer, but in the engineer controlling that computer.
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Computational Fluid Dynamics (CFD)
We exist in a world of motion, a world of fluid dynamics. Computational fluid dynamics (CFD) allows engineers to understand, predict, and work with fluid mechanics.
Finite Element Analysis (FEA)
FEA allows us to analyze any array of complex structures. This yields new designs and reduced structure weight. DMS validates every FEA model for accuracy.
All vessels eventually end with fatigue. DMS can transform this threat into an opportunity for service life extension.
Fatigue Finite Element Analysis
Fatigue finite element analysis can extend your vessel life and create efficient plans for inspection and prevative maintenance.
Composite Structural Analysis
Sometimes you need more from your material. Composite structural analysis allows you to design the material for the perfect structure. Learn more.
Composite Finite Element Analysis
When you require detailed control over your structure, DMS offers composite finite element analysis. The benefits of composites plus FEA.
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Relevant Ship Science Articles
Mesh deformation is incredibly frustrating, complicated, unstable . . . and unavoidable if you want to incorporate body motions into CFD. Modeling body motion demands mesh deformation, changing the mesh on the fly, while using it to solve transport equations. As you might expect, that brings a host of new challenges. This reviews several new strategies that the CFD engineers needs to consider.
When we add the time domain, simulations change from modeling steady scenarios to unsteady, where boundary conditions change over time. Beyond the physics, modeling unsteady flow requires a few changes to the CFD solver. Inner iterations, timestep, Courant Number, and data management all enter into the strategy for the CFD engineer. Today we discuss each of these.
Computational Fluid Dynamics (CFD) can model multiple fluids with the volume of fluid method. (VOF) The volume of fluid method opens new horizons for advanced modeling, which requires additional planning from the CFD engineer. Dive into the boundary conditions, meshing strategy, stability concerns, and more. Discover the world of VOF modeling.
Turbulence demands modeling just like any other equation in computational fluid dynamics (CFD). As the CFD engineer, you need to describe boundary conditions for your turbulence equations. This article describes how to define boundary conditions for turbulence and provides typical values for normal simulations.
Turbulence does tricky things near walls. Boundary layers and laminar sublayers compact interesting flow patterns into a very small space. Small it may be, but experience proved we cannot ignore it. The boundary layer forms on the body, which is our object of interest, arguably the most critical region. Turbulence is most critical near the wall, and we need to consider near wall effects.