Hydrostatics Modeling

Hydrostatics modeling is the first step in any stability analysis.  We construct a model of the vessel that includes all relevant details for a stability analysis:

  • Hull surface
  • All tank definitions
  • Locations of all downflooding points
  • Sounding tubes for tanks
  • Section modulus definition along hull length
  • Loading conditions
  • Draft mark offsets

If the model gets used in a damage stability analysis, we add further details:

  • Internal compartmentation
  • Cross flooding links
  • Margin line definition
  • Bulkhead locations (for floodable length analysis)
  • Damage conditions

Just the stability model can answer many key questions regarding vessel floatation.

  1. Hydrostatic properties
  2. Tank capacities
  3. Tank sounding tables
  4. Floodable length curve
  5. Longitudinal strength comparison

At DMS, we use the Maxsurf set of stability products.  These products can import GHS and Rhino models.  Plus they bring several other advantages. 

  1. Visual output to show the exact vessel state
  2. Direct program output into MS Word: less time formatting reports
  3. Automatic generation of lines plan from hull model
  4. Automatic generation of Rhino geometry file from hull model
  5. Many more. . .

Efficient hull modeling makes for efficient engineering.

Want to Learn More?

We can customize each project to meet your goals.

Find the perfect solution for your needs.

Relevant Ship Science Articles

Practical CFD Modeling: Time Variation

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.

read more

Practical CFD Modeling: Volume of Fluid Modeling

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.

read more

Practical CFD Modeling: Turbulence

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.

read more

Guts of CFD: Near Wall Effects

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.

read more