Simulation Software for Fluids and SolidsSimulation disc stirrer with straight blades
The simulation of mixing and stirring in disc stirrers with straight blades can perfectly be performed using NOGRID points CFD software.
Disc stirrer with straight blades in the chemical industry
This type of disc stirrer, equipped with straight blades, operates at a low rotational speed and functions as a tangentially conveying stirrer, primarily used for low-viscosity media. The container designs often vary in slenderness and bottom shape. In this case, the disc stirrer has a flat bottom and is not suitable for pressure-resistant stirring processes.
Fluid-dynamic dead zones are avoided thanks to the straight transition between the flat bottom and the cylindrical wall of the container. Containers with low slenderness levels, like the one in this case study, are typically intended for small-volume applications. The disc stirrer has no significant conveying effect, as the contents of the container are mainly moved in a tangential direction. Due to the relatively low rotational speed of the stirrer blades, no vortex is formed here. Instead, a characteristic flow pattern emerges, determined by the agitation speed and the geometry of the container and stirrer blades.
Mixing is a crucial process in the chemical industry and is involved in operations such as the dispersion of two or more liquid, powdery, or gaseous components, deagglomeration to avoid lumps, and the homogenization of mixtures.
Improve product performance and reduce costs
Mixing simulation provides insight into the flow behavior within an agitator, allowing for rapid identification of design and operational improvements. This helps enhance product performance while reducing both production and maintenance costs.
Compute any conceivable agitator geometry with mixing simulation
NOGRID offers a wide range of rheology models including those commonly used in the chemical industry. With its unique capability to handle moving parts within the fluid domain, NOGRID enables the simulation of any conceivable agitator geometry and operating mode, such as
- rotating and counterwise rotating agitator blades, possibly moving up and down periodically at the same time
- overlapping operation ranges of moving parts as found in twin-screw agitators
- free surfaces at inlets or for different fluid levels or for fast rotating agitators with high centrifugal forces
Benefit of very short computation time
One of the key advantages of NOGRID's meshless CFD software is its rapid preprocessing - no need for grid generation - and its outstanding short computation times, even for complex moving parts typically found in agitators.
Advantages of NOGRID software
NOGRID combines the capability to handle free surface flows and moving parts within the domain, offering the following benefits:
- fully 3D computation solving the complete Navier-Stokes equations
- easy and intuitive setup also for mixing cases
- freely definable material properties by equations or curves
- evaluation of the mixing quality
- open or closed domains including inflow and outflow areas (non-batch mode)
- moving of the mixers in any direction
Why choose Nogrid?
NOGRID provides professional CFD software for the simulation of fluid flow, heat and mass transfer, and chemical reactions. Its efficient modelling workflow helps engineers analyse flow behaviour, evaluate designs and make informed decisions without creating a conventional volume mesh.
Faster model preparation
With NOGRID, only the geometry boundary needs to be meshed. The finite points inside the fluid domain are generated automatically according to user-defined settings, both at the start of the simulation and during the calculation.
This approach reduces preprocessing effort and makes it easier to prepare complex geometries and cavities for simulation.
Efficient CFD workflow
The modelling process follows four straightforward steps:
Build the geometry. Mesh the boundary. Define the simulation. Start the calculation.
NOGRID is designed to provide short computation times, including for applications involving complex cavities. Engineers can use the resulting data to examine flow distribution and other relevant flow characteristics.
Better insight into fluid-flow processes
CFD solves the fundamental equations governing fluid flow. NOGRID software enables engineers to predict and analyse the behaviour of fluids and related physical processes before or alongside physical testing.
The simulation results can support:
- evaluation and comparison of design alternatives
- optimisation of construction and operating parameters
- improved planning reliability
- reduction of development time and testing effort
- faster progression from design to market or operation
Steps from geometry generation to simulation results
TRAINING
Our two-day training courses teach participants how to set up, run and evaluate simulations efficiently with NOGRID CFD software. The courses include practical guidance for handling different types of simulation cases.
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Technical Support
Professional support is available from the beginning of your work with NOGRID. Our technical team assists users by telephone and email with software operation, case setup and simulation-related questions.
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Simulation Service
When internal time, expertise or resources are limited, NOGRID can support your project with individual numerical simulation services. Our engineers develop and evaluate CFD models based on the specific requirements of your application.
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