Library

2195 match your search

Many industrial products and processes involve the flow of fluids. Some of these fluids are Newtonian in nature as they are well-behaved and display a linear reaction to the external stresses, while others are non-Newtonian with a non-linear response. Non-Newtonian behavior, in turn, can be either purely viscous or viscoelastic. Many of the materials of interest at Kimberly-Clark (KC) are viscoelastic, and as consumer expectations increase and the market becomes more competitive, the need for better understanding of these complex materials has recently taken a front seat. To address this, KC...
Glass container production is generally not an easy process to operate and companies often need to invest a significant amount of time and money to ensure they deliver products with appropriate quality. Glass is indeed a material that exhibits an extremely complex behavior often difficult to predict during manufacturing and, until now, the tuning of the production parameters has been completely bound to the operator’s experience. Dynamics 37 - Read more...
Currently under construction on the Pacific Island of Maui, the 41.5 m tall Daniel K. Inouye Solar Telescope (DKIST) will be the world’s largest solar telescope. Once operational, the DKIST will be able to provide the sharpest views ever taken of the solar surface, which will allow scientists to learn even more about the sun and solar-terrestrial interactions. The DKIST will allow astronomers to resolve the extremely small, violently active, magnetic fields that control the temperature of the corona and the solar wind that produce flares and x-ray emissions, and help to improve prediction of...
Structural vibrations of subsea piping systems stem from either external currents passing around the structure (Vortex-Induced Vibration or VIV) or from transient flows of mixtures inside the pipes (Flow-Induced Vibration or FIV). These vibrations compromise the structural integrity of subsea systems and in extreme circumstances can reduce their fatigue life from years down to weeks. Dynamics 37 - Read more...
The bane of most engineers is dealing with physics that have not been considered during the design process and consequently troubleshooting the problem caused by it. This phenomenon is universal across the engineering world, with operating issues in equipment cropping up in countless different ways. Some unanticipated physical behavior can easily be accommodated and fixed. Others, like those often encountered by Porter McGuffie are much more difficult to diagnose and solve. Dynamics 37 - Read more...
In engineering consulting, troubleshooting the problems faced by your customer in an efficient, timely manner is the bread and butter of the business. As such, it is highly critical to be equipped with the right tools in addition to having competent engineers tackling the problem. This article showcases one such example where a modern numerical simulation software in the hands of good engineers transforms into an efficient, effective virtual troubleshooting tool. Zeeco Inc. is a provider of combustion and environmental solutions, involved in the engineering design and manufacturing of burners...
For downsized SI-engines at high loads and particularly at low engine speeds, spontaneous auto-ignitions randomly occur before the regular spark timing, leading to severe engine damage. These preignitions are limiting the fuel efficient combustion process and therefore it is crucial that the underlying mechanisms are understood. Dynamics 37 - Read more...
The birth of the Can-Am®Spyder® roadster defined new paradigms. Combining the open-air benefits of a motorcycle with many of the convenient features of a traditional roadster created a totally new product category of on-road power sport vehicles. Dynamics 37 - Read more...
A common difficulty in the simulation of complex fluid flow problems is that not every geometry can be well represented using a single, contiguous grid. This is especially true for the case of relative motion between components. Overset grids can be used to track relative motions with computational efficiency and recent advances in high performance Computational Fluid Dynamics (CFD) software like STAR-CCM+® have enabled the coupled simulation of multiphase fluid flows and rigid body motions using overlapping overset grids. A CFD method was developed and applied for the simulation of oil flow...
Creaform was asked to assist in the design of a cleanroom, by performing a complete 3D reconstruction of the geometry of the room, and using this to carry out detailed CFD simulations. The cleanroom in question is used in the manufacturing of influenza vaccine, and the aim of the study was to design an efficient aerodynamic barrier that would mitigate the risk of contamination. The demonstration was convincing and CFD simulations shed light on phenomena that traditional smoke tests, still used for regulatory compliance of pharmaceutical environments, had never been able to resolve before...

페이지