“NIKA’s innovative RAM meshing technology has been brought to new standards,” adds Dr. Alexander Sobachkin, NIKA’s development manager. “Fully automatic meshing of extremely complex CAD geometry previously requiring hours to process now takes only minutes, resulting in very high-quality, CFD-optimized meshes generated based on the original CAD model. Also, significant improvements in the areas of memory efficiency and handling allow EFD.Lab 4.0 to simulate even multi-million cell models on a typical PC found on an engineer’s desk.”
A majority of the new and enhanced capabilities were suggested by EFD.Lab users further demonstrating NIKA’s strong commitment to providing best-in-class software and its legendary customer satisfaction.
New Rotating Parts Capability
EFD.Lab 4.0 offers a new capability for simulating flows around rotating parts such as impellers for pumps, fans and mixers. The Rotating Frame of Reference model was developed and implemented following NIKA’s unique standards of usability. This model considers all related physical phenomena such as rotational forces and may be used to optimize the shape and the efficiency of turbomachinery parts. EFD.Lab 4.0 also offers a new Tangential Wall Velocity boundary condition. This new feature greatly enhances the application of EFD.Lab to flows induced by spinning disks and rotating wheels.
New and Enhanced Physical Models
EFD.Lab 4.0 includes a new model for simulating liquid compressibility. This model allows the accurate behavior prediction of high-tech devices under extreme physical conditions such as high-pressure valves. In addition, a handful of other EFD.Lab models were enhanced to extend their range of application. For instance, Non-Newtonian liquids can now be modeled as temperature-dependent. Typical applications of this enhancement include simulation of flow of chocolate or molten plastics. Lastly, the radiative heat transfer model can now handle solar radiation.
Unique RAM Meshing Technology
One of the most significant enhancements of EFD.Lab 4.0 is its new RAM meshing technology. NIKA’s fully automatic CFD mesh generator now meshes extremely complex CAD geometry within minutes -- even for very large multi-million cell meshes with multiple stages of geometry-based, intelligent local refinements. The RAM meshing technology is a unique feature ensuring high-quality, CFD-optimized meshes as the basis for robust, fast solver runs and accurate results. NIKA’s competency in automatic CFD mesh generation is one of the key reasons for the unparalleled efficiency of fluid flow simulations with EFD.Lab 4.0.
EFD.Lab 4.0 also employs a new memory management system that significantly reduces the overall required RAM memory while it increases the maximum model size. The improved memory management in addition to the new RAM technology and the new solvers allows simulation of very large models on desktop PCs with short turnaround times; thus, providing the fastest return-on-investment in the CFD industry to NIKA customers.
Design Cycle Integrated Fluid Flow Simulation with EFD.Lab
EFD.Lab is based on the principles of Engineering Fluid Dynamics (EFD). EFD is a radically different approach from Computational Fluid Dynamics (CFD). While based on the same mathematical foundation as CFD programs, EFD programs are not only powerful, but also extremely easy to use.
EFD.Lab features incompressible (liquid or gas) or compressible (gas) flows, laminar, turbulent, steady-state and transient flows, surface roughness, conjugated heat transfer, particle tracking, and many more physical models.
EFD.Lab is mainly used for the development and optimization of various products such as automotive parts, computer housings, switching units, electronic devices, HVAC systems, valves and regulators, medical equipment, in addition to the building and fire protection industries. EFD.Lab includes a preprocessor with parametric solid modeling of the geometry, and a powerful postprocessor for easy processing and visualization of results. The preprocessor imports native CAD files from the most important CAD systems and supports numerous standard file formats. The CAD geometry of a design can be directly used without modeling a separate domain of the flow space. This unique feature combined with automatic mesh generation and solver convergence controls allow the engineer to take advantage of fully integrated flow simulation within the design cycle.