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Frequently Asked Questions
NOGRID points, based on FPM (Finite Pointset Method), is a meshless CFD software package for simulation tasks in the wide area of flow and continuum mechanical problems. NOGRID points is a grid-free or mesh-free method which, in contrast to classical numerical methods, such as Finite Elements or Finite Volumes, does not require a grid or mesh. NOGRID points can excellently be applied in the case of all problems, where grid-based methods reach their limits due to the necessary remeshing. Examples are fluid dynamical problems with free surfaces, multiphase flows, fluid-structure interactions with a strong change of the computing domain, or structure mechanical problems with substantial structure changes.
No, all tools which are required to run a fluid mechanics simulation case are provided and supported by us. So our software package includes the NOGRID points solver, the NOGRID points Graphical User Interface (GUI) and our CAD system COMPASS as preprocessor. With these tools you are able to generate all sorts of CFD models. In addition you are able to import CAD models from any other CAD system into COMPASS via the STEP or IGES interface. COMPASS automatically generates 2D surfaces meshes for 3D computations and 1D line meshes for 2D computations. These meshes are only required for the representation of borders/walls of the model. The point cloud inside the flow domain is generated automatically during the computation depending on user specification.
A lot of physical phenomena can be computed by NOGRID points: The Johnson-Cook model for viscoelastic materials, the Bird-Carreau model, the Power law model, the WLF model, WLF-Carreau-Yasuda, the Herschell-Bulkley model, VFT (Vogel-Fulcher-Tamman), user defined viscoelastic models, user defined viscoplastic models, user defined plastic models, linear elastic models.
NOGRID pointsBlow is a forming simulation software that was developed especially for the container glass industry. NOGRID pointsBlow uses the same solver as NOGRID points and is able to simulate the glass container forming process in complete 3D.
This depends on the dimension (2D or 3D), the model resolution and on the computer power (how many cores and which CPU). As an average a computation of an axis-symmetric bottle in 2D does only take a few minutes, 3D computations range between 1/2 hour and 8 hours.
The computation time strongly depends on the CFD model and on the accuracy of the results. Thus a general statement is difficult to give but our experience is as follows: The computation time for applications including free surfaces or moving parts is 1 to 10 times faster than FEM (especially in 3D) and for applications without moving parts and without free surfaces it is 1 to 2 times slower than FE-methods.
NOGRID points runs on each usual PC or Workstation. A model with one million points requires about 4-8 GB RAM memory.
There isn't any comparable simulation software in the global market that can simulate the process of container glass forming and show the results in 3D. NOGRID pointsBlow is the only software worldwide that is able to compute all kinds of forming processes in 3D.
Within a training you will learn how to use NOGRID pointsBlow. There is also the possibility to create a project in order to develop all models and data required.
NOGRID's COMPASS is a 2D/3D CAD system developed by NOGRID as preprocessor for the NOGRID CFD solver. COMPASS is based on the Open CASCADE Technology and it includes components for 2D and 3D surface and solid modelling, visualization, data exchange and rapid application development.