Simulation Glass Feeding

Figure 1: Animation of glass gob formation in the glass feeder

Simulation of glass feeding processes can perfectly be performed with our CFD software NOGRID points

The problem below was created by the ICG-TC25 members (International Commission on glass, Technical Committee 25), who are engaged in R&D activities in the field of numerical simulation of glass forming processes. For more details see ICG-TC25 Bench Mark Problem II: "Gob Forming Benchmark".

Glass gob quality essential

Glass making processes from glass containers to tableware to TV glass begin with a liquid glass droplet (gob) being delivered to the forming machines where it will be molded into the finished glass product. In a great measure the success of the entire operation depends on the uniform quality of the glass gob.

Valuable information by simulation of glass feeding 

Simulation of glass feeding with NOGRID points delivers valuable information that helps to assess the feeding process. For the purpose of this benchmark the glass gob delivery system for a large champagne glass bottle will be modeled. This process was selected because it is far enough removed from current practices to avoid concerns about proprietary information. However, it is close enough to current champagne glass bottle gob weights and shapes to closely many glass gob forming processes. 

Figure 1 shows the velocity profile and the temperature profile in the simulation of a glass feeding process computed with NOGRID points.

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

Particular strengths of NOGRID's fluid flow CFD software 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 for flow modeling 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.




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:




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




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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Simulation Software from Nogrid

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