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For many years we have seen increased computing capability via more powerful microprocessors in higher numbers in products; nearly all of our daily tasks involve some type of computing device. The electronics in these devices typically involve information processing, delivery and systems controls. More recently electrical power has been increasingly used for the primary drive functions of much larger systems. This electrification has accelerated in industries including automotive, aerospace and marine. Temperature is the key design constraint for both computing and power electronics even with...
Modeling boundary conditions for thermal simulation of internal combustion engines entails convection heat transfer from the combustion flow path, crank case and head top oil combined with conduction heat transfer from sliding contact and friction between the piston assemblies, liners, valves, guides and intermittent contact of the seats. The time scale for an engine thermal analysis is much greater than the time for one engine cycle. Therefore, it is helpful to average the heat transfer characteristics for surfaces which see sliding contact mixed with convection states over one engine cycle...
STAR-CCM+ provides a unique set of simulation capabilities, which allow for accurate and rapid simulation of turbomachines. These simulation capabilities include conjugate heat transfer analysis, aeroelastic analysis and performance mapping. This presentation will discuss modeling capabilities critical for the industry such as geometry handling, conformal meshing of complex bodies, solution methods and advanced post-processing. Details of how the Harmonic Balance Solver within STAR-CCM+ can be used to perform aeroelastic analysis will be presented. Additionally, case studies will be used to...
This presentation discusses the preliminary results obtained from the aeroelastic analyses of two half-wing models, with a curved and a swept planform. This work was carried out by the Aerospace Section of the Department of Civil and Industrial Engineering of Pisa University. As demonstrated in previous papers on the topic of rigid models of wings, the curved planform causes a variable angle of sweep along the wing span, resulting in a greatly reduced wave drag at transonic flight conditions. The present numerical comparisons between a curved and traditional swept wing (with the same aspect...
The purpose of this study is to validate STAR-CCM+ accuracy in aeroelastic applications. The benchmark examined here is from the Aeroelastic Prediction Workshop. The High Reynolds Number Aerostructural Dynamics (HIRENASD) wing is chosen for this verification study as a good distribution of unsteady pressure measurements, deflection measurements and balance loads measurements at transonic conditions with realistic flight Reynolds numbers. The CFD geometry has been combined from IGES files and the CGNS mesh obtained from HIRENASD website. Based on this geometry, a polyhedral mesh has been...
A Surface Effect Ship (SES) has a pair of side hulls with flexible seals fore and aft which contain the cushion pressure provided by lift fans. Due to the highly flexible nature of these seals, they interact quite dynamically with the free surface. A series of model tests were performed at the University of Michigan in order to aid the understanding of this interaction and these tests are being simulated in this presentation. This simulation employs the co-simulation engine coupling Abaqus with STAR-CCM+ first implemented in version 5.06. Early versions of this tool used explicit (loose)...
Fluid-elastic instabilities of a flexible rod bundle in turbulent water cross flow have been well studied in laboratory scale experiments. As a validation, unsteady RANS simulation in STAR-CCM+ are coupled to Abaqus via co-simulation and the results compared to experiments. Because of the strong rod-water coupling, this validation represents a complex test for implicit coupling technique realized in STAR-CCM+. STAR-CCM+ and Abaqus models were constructed based on the description and dimensions provided in the reference documentation.* The rod fastening conditions and properties were tuned to...
The capabilities of Battery Design Studio are presented in the context of battery design challenges facing battery developer and users. Examples ranging from cell design to model selection and parameterization are used for demonstrating how to design cells for automotive applications. Finally, new features in planning are discussed.
First, the computational activities for the thermal management of electronic devices in the development process of a passenger car are presented. The numerical challenges related to the temperature computation of a refrigerant cooled battery and related to its temperature control are reviewed. In this respect, a conjugate heat transfer model has been created in STAR-CCM+. The comparison with experimental results shows a good agreement for the temperature of the cell can. The battery temperature is computed in transient conditions under vehicle electrical and thermal loads. Finally, the effect...

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