Simulation Mold filling using a non-Newtonian fluid

Figure 1: Animation mold filling using a non-Newtonian fluid

The simulation of the filling of a mold using a non-Newtonian fluid can be performed with NOGRID points.

The filling of a mold form with liquid polymer is a complicated fluid mechanical problem. The exact computation of the process can greatly help to understand deficiencies of the finished mold such as unfilled cavities, structural weaknesses e.g. due to inappropriate cooling down, air traps or misplaced or otherwise corrupted weld lines.

NOGRID points (a meshless CFD software) enables a fast computation of the free surface at the flow front in conjunction with the ability to incorporate complicated material properties and boundary conditions allow an in-depth analysis of this process.

The symmetric model shown above is computed without the use of symmetry. Nevertheless the two flow fronts meet exactly in the middle of the mold form. The viscosity of the polystyrene is determined by the Carreau model (i.e. it depends on the shear rate). The simulation can be used to study the flow at the entrance into the micro channel section and to understand the forming of the weld line at the center.

NOGRID unites abilities to handle free surface flow and moving parts in the domain and allows the simulation of any conceivable geometry and operation modes such as

  • computation is in full 3D solving complete Navier-Stokes-Equations
  • easy and intuitive setup
  • free definable material properties by equations or curves also for non-Newtonian fluids,
  • evaluation of chemical reactions and corresponding heat source terms
  • open or closed domains including inflow and outflow areas (non-batch mode)
  • moving of parts 

Nogrid's strengths

NOGRID's particular strengths are the rapid preprocessing (no fluid grid needs to be generated, only the boundary mesh, inner finite points are generated automatically depending on User setting initially and during computation) and the outstandingly short computation time even for complicated cavities.
As you can see in the image below, the boundary of the geometry still requires a mesh to allow the interior finite points to detect the boundary. The boundary must therefore be meshed and the finite points inside are automatically generated during the simulation controlled by User specifications.
Easy Modelling

Easy and fast modelling: Build geometry, mesh boundary, setup the case and start computation

What is CFD from NOGRID?

 

CFD solves the fundamental equations that define the fluid flow process. With CFD software from NOGRID every engineer makes better decisions by predicting, analyzing and controlling fluid flow, heat and mass transfer or chemical reaction. By using NOGRID software you receive information on essential flow characteristics as for example flow distribution. Using it additional to testing and experimentation NOGRID software helps to improve the evaluation of your design – resulting in better construction and operation parameters, increasing planning security and money savings due to faster time to the marketplace for your product or process.

 

Choose NOGRID

 

With NOGRID, you choose professional CFD software and services – our aim is helping you to be successful. When you decide to work with NOGRID you choose close cooperation with a dynamic, flat hierarchies-organization. Short information channels result in quick and accurate professional support and service. Our team consists of highly qualified employees, who are experts in fields such as numerical simulation or computational fluid dynamics. Based on our know-how, we are pleased to offer the following services, responding to your individual requirements:

 

TRAINING

 

In our two-days training courses you will learn, how to use NOGRID CFD software efficiently. Our technical support team will teach you how to handle and solve different cases.

For more details please refer to Training Courses →

 

Technical Support

 

We offer full professional support from the minute you start using our software, by telephone or by email. Contact us, when ever needed.

For more details please refer to Software Support

 

Service

 

Lack of time or resources and other constraints often make outsourcing an attractive solution. We help you with your flow modeling needs. Based on our engineering expertise in this field we offer individual numerical simulation services matching the unique needs of your organization.

For more details please refer to Simulation Services →

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55130 Mainz, Germany
info@nogrid.com

Simulation Software from Nogrid

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