For the past few weeks, the ANSYS blog has published many posts and ANSYS has held a number of webinars describing the advantages that ANSYS 17.0 provides for turbomachinery simulation. In the following, I will review these events and provide my summary of 10 (out of many more) exciting developments:
- A focus on HPC delivers significant speedups and ability to handle larger models, for both CFD and mechanical simulation.
- A new mechanical model simulates journal bearings, additionally providing important inputs of stiffness and damping for rotordynamics simulation.
- Fracture analysis is faster and easier with arbitrary crack surface definition and post-processing.
Engineering productivity is a key enabler to developing superior products and getting them to the marketplace fast. A February 5th blog and February 22nd webinar reviewed some of these key improvements that contribute to impactful, high-productivity simulation.
4. High-fidelity aeromechanics is now easier and faster. Improved interfaces and data transfer along with faster solvers speed flutter and forced response simulation.
With demands for improved performance and better reliability, the need for transient simulation has grown. The scope of ANSYS transient blade row methods have expanded over the past several releases, and they enable better prediction of off-design performance and realistic capture of unsteady effects. Combining these tools with ANSYS Mechanical provides unmatched high-fidelity aeromechanics simulation capability. This topic was covered in a February 19th blog and March 4th webinar.
5. Geometry handling is now faster and better. ANSYS SpaceClaim makes it easy to create CAD surfaces from scanned faceted data and a new skin surface tools offers enables interactive surface fitting to faceted models.
6. ANSYS TurboGrid offers improved near wall mesh control for better boundary layer resolution and enhanced tip mesh quality for unshrouded impellers.
Back in November 2015, we hosted a guest webinar presentation by one of the world’s leading pump manufacturers, Grundfos. Among other topics, they outlined the benefits of an automated design system. The pump industry experiences a number of business drivers, and one is legislation that sets efficiency targets for pumps. Such legislation first came into being in Europe, and just this year the US DOE has set its own standards. In our February 26th blog and March 11th webinar we reviewed the wide range of tools and capabilities now available to those who design pumps.
Efficient high-fidelity simulation requires a strong technology platform, and at ANSYS we invest in developing the underlying key technologies. In our March 17th webinar, we reviewed our developments in three fluids technologies that are fundamental to turbomachinery. These are turbulence, transient blade row and combustion.
7. Florian Menter has further revised ANSYS’ industry-leading intermittency-based transition model, reducing the number of solved transport equations from two to one. The accuracy is still the same as the original model, but speed and robustness are improved.
8. ANSYS Transient Blade Row methods accelerate additional machinery configurations. These include Time and Fourier Transformation for multi-stage simulation and Fourier Transformation for transient asymmetric, multi-frequency and multi-disturbance situations.
9. Combustion simulation is advanced with new model extensions and advances in scale-resolving turbulence models.
ANSYS has been opening up its platform to facilitate linkage to third party and proprietary tools. One vehicle for doing this is ANSYS ACT, which enables the development of efficient custom design systems and workflows. Recently, the London UK company Advanced Design Technology (ADT) linked their TURBOdesign1 (TD1) inverse design software to ANSYS Workbench via a custom module, TURBOdesignWB. Our March 11th blog and April 1st webinar describe the benefits of both direct and inverse design methodologies.
10. Design of Experiment and Optimization improvements accelerate product refinement. The possibility of readily connecting to third-party inverse design software offers users more choice of design methodology and greater productivity.
One topic not covered in any of the above is ANSYS AIM, a relatively new product. While ANSYS AIM may lack specific turbomachinery capabilities, it has a number of important attributes that make it valuable within the turbomachinery design environment. Perhaps first and foremost is the ease of use that its unified multiphysics user environment provides. AIM borrows on the strong multiphysics solvers from the ANSYS flagship products, with some improved capabilities as well. For instance, the CFD solver provides unmatched multi-region capability. This enables total control of the type of physics simulation on a region basis. One region could be laminar, another turbulent, one compressible, another incompressible, one isothermal, another with heat transfer etc. ANSYS AIM capabilities are expanding at a rapid rate and it is receiving great reviews, particularly from time-pressed designers who appreciate that it is easy to learn and easy to use.
The above summary and associated links provide a good review of what’s new and exciting in ANSYS 17.0 for turbomachinery simulation. Please join our webinars on April 8th (9:00am EDT or 4:00pm EDT) where we will provide additional coverage on how ANSYS can improve and accelerate your turbomachinery design efforts.