PowerDELTA with PowerCLAY

Since its introduction, PowerDELTA® has helped leading companies gain an advantage with better-performing products, reduced costs and accelerated time-to-market by frontloading product performance analysis in the design process where critical and costly design decisions are made. A rapid and accurate analysis process becomes critical when frontloading, since many more design variations need to be analyzed compared with traditional late-stage design verification analysis.


PowerDELTA morph animation
PowerDELTA morph animation

Typical challenges in the simulation preparation process:

  • Long mesh baseline preparation time
  • Difficult to quickly create design alternatives for iterative testing
  • Poor quality design/early-stage data
  • Redundant simulation model builds
  • Responding rapidly to design changes
  • Capturing and reusing best practices


A key activity within the analysis process is preparing models for simulation, and in most organizations, it's a significant barrier to an efficient process. Typically, mesh preparation time is very long — taking many days or even weeks. This is further complicated by the need to handle conceptual geometry and poor quality carry-over CAD data.



Exa PowerDELTA PowerCLAY  simulation preparation process
PowerDELTA with PowerCLAY streamlines your model preparation process from CAD to simulation-ready so you may simulate, evaluate and optimize your designs faster. Click here for larger version of this workflow diagram to show a the new, faster way to prepa

Exa Corporation, known for its innovative products that enable real world engineering processes to become more efficient, offers PowerDELTA to streamline and automate the simulation model preparation process. PowerDELTA applies proven concepts of parametric feature modeling, direct mesh morphing and history tree model management to the process of simulation model creation. Design data in most major CAD and mesh formats are supported — even at varying levels of quality.


PowerDELTA with PowerCLAY® simplifies and streamlines the laborious and time-consuming process of model preparation and model modification. Some unique features illustrated below:


Patented, real-time studio-quality lattice morphing

The patented lattice morphing capability, previously only available in PowerCLAY, has been implemented in PowerDELTA. With lattice morphing, individual lattice points give precise control of the surface shape without having to introduce additional constraints. Various controls ensure smooth transitions between morphed regions and the original surface. The resulting surfaces are at a quality level expected by the design studio, resulting in a higher likelihood that the modified designs may be acceptable to the studio. Each lattice is a feature on PowerDELTA's history-based feature tree and can be modified at any time and included in standard, reusable meshing templates that dramatically streamline the meshing process. PowerDELTA with PowerCLAY morphing can now manage the whole design space. 


Interactive, 3D Morphing
With the patented lattice morphing capability, creating design alternatives is easier than ever. Morph surfaces in real-time for rapid and precise shape changes.

Multi-Lattice Management
Multiple overlapping morphs can be applied to the same region, without worrying about interaction between morphs. The system takes care of combining the effect of all morphs together.

Axis Symmetric Morph
Specialized cylindrical lattice morphing maintains axis symmetry and speeds up the process of modifying fans and wheels.

Design Space Management
The design space can include morphs and translate or rotate operations and part variants. Easily manage the design space from a single table.

Assisted Lattice Creation
Morphing long, narrow features such as an A-pillar section is often a bottleneck to the design alternative creation process. PowerDELTA's sweep lattice dramatically cuts the time for morphing these types of complex curved shapes.



PowerDELTA imports all major MCAD and mesh formats directly, including:


  • CATIA (4 & 5)
  • ACIS
  • VDA
  • ParaSolid
  • IGES
  • Unigraphics
  • STEP
  • SolidWorks
  • Inventor


  • STL
  • MSC Nastran
  • CGR
  • JT

Easily export to the following MCAD and mesh formats, including:


  • ​IGES
  • ​STEP


  • STL
  • MSC Nastran