TwinMesh for Reliable CFD Analysis of Screw Compressors and ExpandersCombining TwinMesh and ANSYS CFX offers engineers a unique, efficient and fast workflow for transient, three-dimensional computational fluid and thermal analysis (cfd) of Screw Compressors, Expanders and Superchargers.
Developers of Screw Machines Need to:
- Analyse the impact of changing operation requirements (e.g pressure difference, rotation speed, impact of external temperatures, etc.)
- Have a deep understanding of their machine dynamics
- Be able to answer specific customer demands (CoP, noise emission)
- Produce fast and reliable answers
Thanks to our novel software TwinMesh real virtual product development is now available for twin screw machines! TwinMesh and ANSYS CFX together allow for efficient and reliable CFD analysis of screw compressors and expanders.
No More Numerical Limits
Common limitations of CFD software packages for screw compressor or expander geometries such as limited physics, insufficient mesh resolution or numerical errors due to bad mesh quality or interpolation errors or overlapping mesh method are redundant for the TwinMesh approach.
Using structured grids from the TwinMesh software engineers of screw machines get access to the full capability of CFD modelling available in ANSYS CFX. The high quality meshes from TwinMesh result in reliable and stable CFD simulations at moderate model sizes and moderate calculation times for transient analysis. Even for multiphase simulation such as oil-injected or water-cooled screw compressors and expanders.
Reliable CFD Analysis of Screw Compressors and Expanders
And what can designers expect? CFD analysis results generated with TwinMesh and ANSYS CFX provide design engineers of oil-free (single-phase) and oil-injected (multi-phase) screw compressors and screw expanders with essential information such as:
- Velocity, pressure, and temperature fields within the working chambers, in axial and radial clearances, and in suction and discharge ports
- mass flow rates at different operation points
- Torques, moments, forces and machine efficiency (CoP)
- Leakage and losses
- Pulsation behaviour of the machine
- Mechanical wear, lubrication and cooling
- Duration and magnitude of acoustic sources (emission)
TwinMesh and ANSYS CFX together make a reliable, modern, and state-of-the-art engineering tool, which allows for fast, reliable and efficient analysis and optimization of oil-free and oil-injected screw machines.
Better DesignsIncrease machine performance, efficiency, and durability by a better understanding of complex phenomena inside your machine.
Speed & FlexibilityReduce your time-to-market and fasten your response time to changing demands significantly by massive use of virtual prototyping.
Drive InnovationDrive real innovation by getting deeper insight into the details of your products and their interaction with connected systems.
Reduced CostsReduce development and manufacturing costs by massive use of virtual product development instead of time consuming measurements on physical prototypes.
CFD Results of Screw Compressor and Screw Expander Simulations
Animations of Screw Compressor Simulations
Flow in working chambers of a screw expander
Oil-injected screw compressor (multiphase)
Related blog entries
Next free TwinMesh webinar on 17th of October 2017 at 9am (CEST): find out more about how TwinMesh and ANSYS CFX allow for reliable 3D CFD analyis of rotary positive displacement machines such as screw compressors, lobe pumps, vane pumps, wankel engines, gear pumps, progressive cavity pumps or scroll expanders!read more
With its working principle of a positive displacement machine the scroll expander is a real challenge for 3D CFD. Luckily, BOSCH knows where to look for experts in that field. CFX Berlin provides the right tools, and experience to take such a challenge. Find here a presentation on numerical simulation of a scroll machine using TwinMesh and ANSYS CFX.read more
2016 has been an exciting year for us. With a steady increase in customer numbers we are very happy to welcome our latest TwinMesh users: Danfoss and Scherzinger Pump Technology. Moreover, we would like to share what Eaton has to say about TwinMesh and CFX.read more