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Although these days it is considered a 'toy', a boomerang is a sophisticated device which poses a challenging design problem as it is subjected to six degrees of freedom and unsteady aerodynamic effects which, due to the rotation, vary from section to section along its length during flight. In addition, variations in the launch (due to the launching person’s strength, technique etc.) add significantly to the complexity of the design problem. This presentation shows how the process integration and design optimization software modeFRONTIER was coupled to STAR-CCM+ to optimize the shape of a...
Optimate and Optimate+ are add-on modules for STAR-CCM+ that directly employ state-of-the-art process automation and design optimization technology from Red Cedar Technology. The Optimate solution, which includes CD-adapco’s Power Token software licensing, eliminates the barriers that have historically prevented CFD-based design optimization with any real practicality. This talk will include a demonstration showing how this process couples to existing STAR-CCM+ simulations for both design iteration (Optimate) and optimization (Optimate+) analyses.
A Detached Eddy Simulation (DES) turbulence model is used to conduct wake refinement of a 25 deg Ahmed reference body. This model was chosen for its highly three-dimensional flow characteristics and its ability to properly simulate a standard automotive wake. Slot jets were designed at the rear of the Ahmed body and several optimization simulations were conducted using Optimate+. The initial optimization simulations were conducted to determine the sensitive variables. These variables were jet velocity and exit angle. After these variables were determined, another optimization simulation was...
The design of low Net Positive Suction Head (NPSH) pumps requires special attention. The subject pump stage is part of a two stage pump. The pump is required to possess a very large range of operation at very low inlet pressures. The pump also has a very large shaft that restricts the inlet bladed flowpath area, thus raising inlet flow velocities and decreasing local static pressures. Compounding difficulties, this pump requires a radial inlet that will quickly transition the flow from radial to axial. Radial inlets have a unique problem of creating a circumferentially uniform flow at the...
Impact of STAR-CCM+ v7.0 in the automotive industry
The number of automotive engineers using STAR-CCM+ for vehicle simulation has been growing rapidly. A wide range of applications are being used in the automotive industry, from vehicle aerodynamics, passenger thermal comfort, to HVAC and component analyses. Each year, new features or improved, more efficient processes are introduced that help our clients. This presentation will look into some of the new features for STAR-CCM+ and how these features are being used productively in industry. It includes an overview of the current gains in turn-around time using coupled solver for aerodynamics,...
Conjugate heat transfer simulations of a bypass valve for the next generation of highest-efficient power plants
Increasing the efficiency for future steam cycle power plants is of significant importance for the reduction of their CO2 emissions. Today’s best steam cycle power plants have a net plant efficiency of 46% while the average efficiency value for such power plants worldwide is still around 30%. Consequently, there exists a great potential for a reduction in CO2 emissions by replacing old power stations with new ones. Yet, a greater potential can be achieved if even higher efficiencies are obtained. In order to push the efficiency of stem power plants significantly over the 50% mark, further...
Development and validation of a Thermal Simulation Model for Li-ion batteries in HEVs/PEVs
This presentation will report some of the conclusions from the 2 year project including Porsche, GM Opel and Daimler. The project is managed and led by the Automotive Simulation Centre Stuttgart. The project is a rigorous study into the application of simulation technology to a previously designed lithium ion battery pack. The presentation will feature comparisons of test work and simulated results at both the cell and module level.

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