Simulation Software for Fluids and SolidsSimulation 2-blade Stirrer with Baffle
If you want to simulate the mixing process in a 2-blade stirrer with a baffle, NOGRID points CFD software is an excellent choice.
Use of 2-blade stirrers
The 2-blade stirrer in this case study is a tangential impeller type, typically used for medium-viscosity media. The containers used often vary in their degree of slenderness and bottom design. This 2-blade stirrer has a conical bottom, making it suitable for pressure-resistant mixing processes. Additionally, the conical shape allows for quick and efficient emptying.
Containers with high aspect ratios, like the one in this study, are usually designed for large-volume applications. The 2-blade stirrer does not have a pronounced conveying effect, as the container is only moved tangentially. To counteract the tangential flow and prevent vortex (trombe) formation, baffles are used in the setup. These baffles help stabilize the flow and improve overall mixing efficiency.
Mixing plays a key role in the chemical industry and is involved in processes such as dispersion of two or more liquid, powdery, or gaseous components, the deagglomeration to prevent lump formation, and the homogenization of mixtures.
Improve product performance and reduce costs
Mixing simulation helps to analyze the flow within an agitator, enabling quick recommendations for optimizing design and operating parameters. This leads to improved product performance and reduced 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. Its unique capability to handle moving parts within the fluid domain allows for 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 strengths of NOGRID's meshless CFD software is the fast preprocessing - no grid generation is required - and the outstanding short computation times, even for complicated moving parts typically found in agitators.
Capabilities of NOGRID software
NOGRID combines the ability to handle free surface flows and moving parts within the domain. This leads to the following advantages:
- fully 3D computation solving the complete Navier-Stokes equations
- easy and intuitive setup 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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