Before we dive deeper into turbulence modelling in CFD, it is crucial to understand the different scales of turbulence and the energy cascade. Let’s look at a brief overview of the energy cascade and the turbulent energy spectrum. The Scales of Turbulence A turbulent flow consists of eddies, which are swirling regions of fluid motion
Fluids are all around us, including the air we breathe, the water we drink, and the blood flowing in our body. Understanding how fluids interact with our surroundings allows us to harness their potential for endless applications in multiple disciplines. For example, reducing the air resistance/drag on cars and airplanes so we can travel faster
Fidelis is absolutely thrilled to announce that Jitesh Rane joins the team as our new Lead CFD Engineer! In this role, Jitesh will conduct CFD related project work, as well as leading our software sales and support efforts in the CFD space. We’re excited to tap into all of his experience gained both in academia
Introduction Shock Response Spectrum (SRS) analysis is used to calculate the peak response of a physical system subjected to shock loads in the frequency domain. This is a very useful, inexpensive tool that provides qualitative comparisons between preliminary designs. It is often essential in the fields of engineering, material science, and electronics where rapid transient
Tell me if you have heard this one before: “Which is better, CATIA or SolidWorks?” This question seems to come up often, at least often enough, that I decided to explore further. In the 3D CAD software space, Dassault Systèmes offers two of the top programs in CATIA and SOLIDWORKS. Both are excellent options, and
Bolts are one of the most common ways to connect parts together. They have a high strength capacity and they are great to use when disassembly is necessary. It is important to correctly model these when performing FEA, but the modeling approach can vary quite a bit. In this blog, we’ll examine four different levels
We all know that using physical testing to validate products is a risky maneuver. This sample project highlights exactly why that is! Problem Statement Fidelis was contacted over a year ago by a defense contractor wanting to validate the design of an electronics bay exposed to significant shock loading prior to physical testing. After the
Heat transfer is a huge factor to consider in so many industries, including propulsion, electronics, manufacturing, and HVAC. There are three modes by which this can happen – conduction, convection, and radiation. In this blog, we will go through the basics of these modes and how we can implement them in Abaqus CAE. Conduction Conduction
Safety factors are very common in engineering design to reduce the risk of product failure. However, there are a many different ways to apply them as well as to report them. In this blog, we’ll explore these and clear up, once and for all, the differences between ‘safety factor’, ‘factor of safety’, ‘margin of safety’
Isaac Newton defines inertia as the tendency of objects in motion to stay in motion, and objects at rest to stay at rest, unless an outside force changes its speed or direction. However, if you’ve been in the realm of mechanical design for any length of time, you’ll likely have heard the term “moment of
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