Library

2216 match your search

Skiffs are high-performance, fast and powerful dinghies designed for onshore racing. An example of Olympic skiff is the well-known 49er. Skiffs have a light displacement, flat hull and an oversized sail-plan, allowing planing with light wind in both upwind and downwind conditions. The typical sailplan comprises a square top mainsail, a blade jib and a gennaker tacked on the bowsprit. The righting moment is mostly due to the weight of the crew who uses racks and trapezes. In strong breeze and high boat speed conditions, the crew moves aft, lifting the bow out of the water in order to decrease...
When designing a sailing craft with high performance characteristics, the sails are clearly the main element that must be optimized in order to achieve maximum performance. The sails provide propulsion to the craft, using the kinetic power of the wind to generate the force required for movement. As with any machine that has to draw power from a fluid to achieve optimum performance, an accurate fluid-dynamic analysis is required. Furthermore, in order to ensure proper structural integrity and optimized performance for a large range of sail deformations, the loads generated by the fluid on the...
While every engineer strives to create the new best thing since sliced bread, often his or her work must be focused on the more mundane: taking a product or idea already on the market and making it better, faster, smaller, lighter, cheaper or somehow more improved. This optimization, while not as exciting as groundbreaking new designs, is still vitally important for technological advancement. Compare the latest cell phones to the very first cell phone models ever made, or a laptop to the ENIAC, and you can see what optimization can do for the world, much less for customers, who are almost...
In today’s fast-paced and competitive climate, improved product performance and shortening of lead times are critical for business success across all industries. With computational resources more readily available, simulation, now more than ever, is a key enabler for making sound engineering decisions while addressing complex customer requirements. As engineering management has new visionary ideas and demands more product design variants in a shorter time, engineers must rely on efficient and flexible multi-disciplinary design exploration (MDX) to tap into the many benefits simulation has to...
One of the greatest challenges of engineering analysis is being able to understand how changes in geometry and flow features might influence your system’s performance. For a long time, the only way to gain insight into the sensitivity of engineering objectives to changes in input was to run multiple analyses and then dig through the results. The introduction of the adjoint solver in STAR-CCM+, however, changed that allowing for direct access to sensitivity information from a single simulation. Dynamics 36 - Read more...
While raindrops falling on your head might represent a minor annoyance, the same raindrops accumulating on your car windscreen, or forming as ice on an aircraft wing can represent a serious safety concern. However, until recently simulating multiphase problems such as aircraft icing, vehicle soiling and water management has presented a significant computational challenge, due to the need to model the tiny particles of water as huge numbers of discrete Langrangian droplets. These droplets impinge on key vehicle surfaces, such as aircraft wings and car side mirrors, to form a fluid film or, if...
When you hear the phrase “Volume Rendering”, the first thing that may come to mind is a collection of highly compelling medical images depicting our internal organic structures. You might also recall movie blockbuster special effects showing things like clouds, smoke, storms and explosions. And you might be thinking that these high-end visualizations are the exclusive domain of dedicated medical imaging facilities and animation powerhouses like Dreamworks and Pixar. What would you think about being able to create a “Volume Rendered” depiction of your CFD results on your laptop? And why would...
Great designs aren’t born fully formed and beautiful. They evolve, shaped by exposure to the rigorof real-life operation. Engineers know this. There are few words that cast as much fear into the heart of an engineer as “untested”. From the very earliest days of our careers, we learn the hard way that “untested things”, such as components, ideas and designs, break under the stress of real-life operation. That, in part, is the art of engineering: taking things and making them better, finding out how they break, why they break, and working out clever ways in which to prevent them from breaking...
Recent progress in simulation methods for the manufacturing industry has reduced the need for expensive test hardware which could be used free of charge in manufacturing. Using manufacturing simulation tools starting at the design stage helps to optimize product development and corresponding manufacturing systems. Whenever there is the need for an early design input in order to ensure quality and manufacturing costs virtual manufacturing methods will have a profitable chance. For the case study "E-Coat Simulation" STAR-CCM provides an improved workflow from CAD-data and meshing to E-coat...
Presented at the STAR South East Asian Conference 2013

Pages