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Turbulent heat transfer is an extremely complex phenomenon which has challenged turbulence modelers for many decades. A limited number of momentum transfer models and not a single turbulent heat transfer model are available in commercial codes, except for the turbulent Prandtl number concept, which consists in applying the Reynolds analogy between the momentum and the thermal field. It was found, as expected, that the more sophisticated heat transfer models available in some academic codes were superior to the models available in commercial codes. In addition, in the case of liquid metal heat...
The Spallation Neutron Source (SNS) is an accelerator-based neutron source at Oak Ridge National Laboratory (ORNL). The SNS facility provides the most intense pulsed neutron beams in the world for scientific research and industrial development. The liquid mercury target, moderators and beryllium reflectors are contained inside the inner reflector plug. The main objectives of the redesign of the inner reflector plug are simplifying its disposal and increasing its neutronic performance. The inner reflector plug is actively cooled by flowing heavy and light water through a maze of channels...
Corrosion protection by E-coating is widely used in automotive industry, and simulation of this manufacturing process increases constantly because of the valuable information obtained in different phases of the development process of a car. Appropriate meshing strategies are necessary to meet the requirements to the simulations with respect to preparation speed and accuracy: In early design phase, it is recommended to use surface wrapper and remesher. When CAD data gets more precise at later stages, it becomes worth to invest in surface mesh preparation to obtain precise surface...
With the recent progress in simulation methods for product development, the need for expensive test hardware, and therefore their availability, has been significantly reduced. This requires additional development and application of manufacturing simulation methods for virtual testing purposes. Early feedback based on manufacturing simulation results to the product design team will help ensure that manufacturing quality and cost requirements are met. STAR-CCM+ 8.02 provides an improved simulation process chain from CAD-data meshing to E-coat deposition including fill and drain behavior in...
In manufacturing and product design, CFD is deployed for the design, validation, evaluation and optimization of the production process. The casting industry has adopted simulation to help with challenging castings, such as, to name just a few: designing the gating and the mold, minimizing necessary super heat, and finding the optimum pouring curve to reduce gas entrainment. It is with the aim of providing solutions for this whole range of casting applications that STAR-Cast was developed. With version 8.02, we will reveal a brand new STAR-Cast, now completely embedded within STAR-CCM+. STAR-...
Biomedical device design is facing increasing product complexity while prototype building and testing can take months. The inherent risk in new medical product development can be mitigated through a deeper understanding of the design properties and functions achieved through modeling and simulation. Modeling capabilities for the design of various devices from respiratory (inhalers), pacemakers, MIT/CT scanners, to cardiovascular and microfluidic devices will be discussed. The importance of Fluid Structure Interaction (FSI) modeling will also be addressed. The implicit coupling of STAR-CCM+...
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...

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