cFD & fEA

cFD & fEA

We carry out computational fluid dynamics (CFD) and finite element analysis (FEA) studies with Siemens NASTRAN, Siemens STAR CCM+ and other equivalent powerful softwares, which is an indispensable program for research centers. We use Siemens SOLID EDGE Pro to model the 3D ship structural elements used in these calculations.

The sensitivity level of the mesh structure of the hull in computational fluid dynamics and finite element analysis has a great effect on the calculation results. Therefore, we prepare the mesh system at a higher fineness than the standard mesh size. In this method, the calculation time is extended significantly, but since a satisfactory level is reached in the results, we do not compromise on the accuracy of the convergence value.

Siemens NASTRAN’s mesh generation capabilities are very advanced, so it is more reliable than other softwares in this regard.

As is known, NASTRAN is the ancestor of FEA softwares, it has a 10-year process difference with its closest competitor, it is the first to enter the market, and it is still being used effectively by NASA

Our Computational Fluid Daynamics & Finite Element Analysis calculations covers the following:

Hydrodynamic analysis
Ship vibration and noise analysis
Structural stress analysis
Free-free modal analysis
Pre-stressed modal analysis in water

A 3D surface prepared in Nastran is a mathematical representation of a surface in three-dimensional space. It is typically defined by a set of equations or a set of points.

To create a 3D surface in Nastran, you can use the following steps:

Define the surface equations. The surface equations can be defined in a variety of ways, such as by using parametric equations, B-splines, or NURBS.

Define the surface points. The surface points can be defined by using coordinates, or by using a mesh.

Nastran-generated mesh-Aft Body

3D model prepared in Siemens Solid Edge for pre-stressed modal analysis in water

Computational Fluid Dynamics

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