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Optimization for Powertrain Applications
Government regulations are driving for both decreased emissions and reduced fuel consumption. Improving the efficiency of in-cylinder combustion engines is critical to meet these challenging requirements. This webcast explores the tools that help find better engine designs, faster. Presenters look at optimization tools applied to engine design, including adjoint solver to improve design through surface sensitivity calculations. Examples covered: Piston Bowl Design Optimizing Intake Port Design Coolant Circuit Optimization Water Pump Design
It is our pleasure to announce James Bertwistle as the winner of the 2015 CD-adapco Calendar Contest. This year again, contestants from all around the world submitted images of exceptional quality. James’s entry, which represents the Wind Effects around Tall London Buildings, scooped the first prize owing to its beautiful and accurate representation of urban wind flow, as used in environmental impact assessments for new building developments during the planning application process. James is an expert user of STAR-CCM+®, having started working at WSP nearly 10 years ago as a graduate from the University of Leeds CFD Masters course. He is now the Associate Director of WSP’s Computational Fluid Dynamics group in the UK, leading a team of CFD modeling engineers specializing in performance-based design for the built environment. I met up with James to find out exactly how he applies simulation to real-world engineering problems.
Modeling Solids Conveying Using the Discrete Element Method
Conveying and transport of solids poses challenging problems when compared to the transport of fluids. Particles have a unique flow and transport behavior that is dependent on the shape and size of particles, as well as the geometry and means of transport. Traditional methods of designing particle transport systems rely on experience, correlations and basic principles of physics. Experimentation is necessary to verify the designs. Simulation, specifically using the Discrete Element Method (DEM), can be employed to assess the suitability of designs. It is a technique where the flow and...
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The authors of an Interface paper explain how their study applies large-scale computations to chart how the airflow evolves during a sniff, illustrating how the air we breathe moves inside our airways when we inhale. They explain how their results help our understanding of nasal physiology and could be helpful in treating medical conditions (Courtesy of Bates, Cetto, Doorly, Imperial College)
Initial temperatures in die and shot sleeve: Calculated initial temperature distribution via die cycle warm-up.
Meshing: Unstructured polyhedral mesh including thin layer at material interfaces for good prediction of thin section fill and precise calculation of high gradients.
Velocity Profile during a Sniff (Bates, Cetto, Doorly, Imperial College)
Large-scale computations to chart how the airflow evolves during a sniff, illustrating how the air we breathe moves inside our airways when we inhale. Shown here are velocity contours and vectors on a planar cut through the nasal passage (Courtesy of Bates, Cetto, Doorly, Imperial College).