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CAE-suites allow the automatic generation of geometry variants and the development of sophisticated strategies to help find an optimal design. The geometry representation of complex free-form surfaces is one important aspect when it comes to automated CFD-based optimizations of flow-exposed products. Typical examples for functional free-form surfaces are compressors and turbine blades, wings, ship hulls, nozzles, ducts, diffusers and many more. On the one hand, engineers want to investigate only feasible shapes of their automatically varied geometries that fulfill a set of constraints...
Exploring the design space of a simulation requires the preparation of multiple STAR-CCM+ simulation files. Setting various run dependent conditions such as inlet velocity and rotating body angular velocity can be done using STAR-CCM+'s batch mode and an internally defined java macro file. When the run dependent conditions need to altered to conform to a statistically defined design of experiments or as part of a multi objective optimization the amount of simulation preprocessing that needs to occur becomes unmanageable for the CFD analyst. This presentation investigates the process of using...
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...
Performing landing operations of a helicopter or a UAV (Unmanned Air Vehicle) on the helideck of a battleship is a critical situation for both the "pilot" of the air-vehicle and the crew of the ship. A detailed understanding of the flow structure and turbulent fluctuations is therefore necessary. Taking into consideration the very detailed superstructure of the complete ship, CD-adapcos engineering software such as STAR-CCM+ can be used to predict turbulence fields. Background Reconnaissance is one of the main tasks of the German Navy. A UAV will ensure identification of objects beyond 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,...

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