If you are somewhat familiar with CFD simulations, you will most likely have come across the term y+. This dimensionless term is one of the most critical aspects of designing a mesh for your CFD simulation, particularly for wall bounded turbulent flows. This can make or break your CFD solver’s ability to accurately predict the
When material is subjected to constant load over a prolonged period of time, its deformation gradually progresses leading to failure of the material. This phenomenon of material failure is called creep. The creep deformation will be permanent even if the stresses are below yielding point of the material. The effect of creep rapidly increases at
In a multi-body finite element analysis (FEA) simulation, various components of different shapes, sizes, and materials interact with one another. Some of these components may be idealized as rigid, meaning they are non-deformable under the action of applied forces and moments. This assumption simplifies the model of complex mechanical and physical systems, thereby increasing the
Tie constraints are a powerful and effective tool for connecting different regions in Abaqus FEA model, ensuring they perform as a single, bonded structure during the simulation. They work by allowing the surfaces to move together as a single entity irrespective of their mesh and material differences. These types of constraints are often used to
One very necessary part of the FEA process is cleaning up geometry so it can be meshed. Many times, we get CAD files that our pre-processor can’t read in properly or needs to be simplified to make a good mesh. In this blog, we will be going over some tricks to help go from a
One of the most important steps in solving fluid flow problems using CFD is selecting and setting the correct boundary conditions that accurately represent what is happening in real-life. Boundary conditions provide information to the solver on the behavior of the fluid at openings and surfaces in the computational domain (or as the name suggests,
We all know that simulation is capable of providing insights into a large number of design iterations quickly and efficiently. This analysis exemplifies exactly that – and how the results allow selection of optimum designs prior to any physical testing. Of course, we can’t include the real results of the analyses – NDAs are important
In our previous blog, we described the turbulent energy cascade and the turbulent energy spectrum that characterizes a turbulent flow. To summarize, a turbulent flow consists of eddies (swirling regions of fluid) of different sizes. These eddies range from being a comparable size to the characteristic length of the system and being heavily geometry dependent,
One way to significantly reduce the size of an FEA job is to utilize symmetry. But how do we do it, and when can we apply symmetry? We’ll go over all that in this blog, as well as the cases of antisymmetry, asymmetry, and axisymmetry! When Can I Use Symmetry? When using the term symmetry
The popularity of CFD for industrial applications, as well as academic research to accurately predict fluid flow behavior, is ever increasing as technological advances are made in computing technology and speed (e.g., massively parallel supercomputers with GPU acceleration). Within the heart of these CFD simulations, two main methodologies exist: the Navier-Stokes approach and the Lattice
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