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This presentation looks at the state of the art of simulation technology in the field of thermal and electrochemical modeling of battery cell, module and packs. Thermal modeling of complex three-dimensional systems can be considered a mature field and deployed to address many applications but the addition of electrochemistry to this system is a recent advance. This advance adds many considerations and layers of complexity, which an engineer needs to consider when conducting simulations. The presentation will highlight the critical aspects of such simulations and highlight their importance...
Hydrogen powered fuel cell vehicles are a zero emission alternative to conventional gasoline or diesel vehicles. Their number is expected to rise significantly in the next few years. Hydrogen fueling is as fast as gasoline fueling (3 minutes). However, refueling process is challenging due to the high gas pressure (70 MPa), high velocities and varying ambient conditions. Our presentation will demonstrate how STAR-CCM+ was used to optimize the fueling process and define the world wide fueling standard SAE J2601. Our model is able to predict mass flow, pressure and temperature over time and to...
A promising alternative to fossil fuels would be the utilization of a fuel cell as a powertrain for vehicles instead of a combustion engine. Inside the fuel cell, the reaction of hydrogen at a catalyst is used to convert chemical energy into electric energy and heat. This new technology offers a great potential for optimizing the components of this system. Reasonably, the on-going process can be realized with CFD-simulations. It is a matter of common knowledge that the water content of the membrane influences proton conductivity. An option to ensure the supply of water, and to protect the...
In this work, we investigated the specially resolved heterogeneous catalysis of the Dry Reforming of Methane (DRM) in terms of CFD simulations. A catalytic, spherical fixed-bed reactor is simulated with a small tube-to-particle-diameter. The randomly packed bed (D = 16.2 mm, dP = 4 mm, H = 40 mm) was generated using the Discrete Element Method (DEM), which consists of 113 mono-disperse spheres. A detailed reaction mechanism is implemented involving 42 irreversible reactions with 12 surface-adsorbed species and 6 gas phase species. The chemical composition equations are calculated by DARS-CFD...
Upfront CAE studies performed as early as possible within the design and development process are required for thorough design explorations and formal optimizations. In this presentation, a novel approach is presented in which STAR-CCM+ is coupled with CAESES and an automated shape optimization is performed. The case study is that of a top entry mixer which is typically used in the process and chemical industries. The coupling of the softwares along with the process chain is elaborated and the resulting mixer shapes are compared to standard designs used in industry today.
The glass container production is generally not an easy process to operate and companies often need much time and money to obtain products of an acceptable quality. Glass is indeed a material having an extremely complex behavior to predict during manufacturing and, until now, the tuning of production parameters is completely bound to the operator’s experience. To overcome this sticky situation, Bottero, a process-oriented company operating worldwide in the glass machinery field, has developed a simulation based methodology in cooperation with university laboratories and production experts...
Micromixers are key components in several micro electro-mechanical and lab-on-a-chip systems, which are increasingly applied in fields such as chemistry, chemical synthesis, bio-technology and environment control. A CFD-based study is presented, which includes design modeling, flow and mass transfer simulation and geometric parametric analysis of a passive micromixer that presents curved shape obstacles and grooves in the mixing channel as main geometric features. The parametric study helps to identify the effect of some geometric dimensions on mixing quality, pressure loss and shear stress...
STAR-CCM+ is used in the chemical and process industries widely. CD-adapco is investing in further development of STAR-CCM+ to address the challenging needs of future in this industry. In this talk, some parallels and contrasts on the use of CFD in the automobile and chemical industry will be drawn. Criteria for success will be discussed followed by an outline of the future developments.
This analysis investigates the fluid dynamics behaviour of the pneumatic system for a coffee roasting plant and particular attention is devoted to the roasting process of the coffee beans. A numerical model is constructed to simulate the complete thermo-pneumatic system that is employed in a reference plant. The numerical tool includes a predictive model for the simulation of the heat and mass transfer between the hot air flow and the coffee beans in order to estimate the coffee roasting process. Thus, submodels for the evaporation of the coffee moisture content and the coffee reactions due...
This presentation will show how STAR-CCM+ software can be used to increase the performance of night ventilation in a courtyard house. Night ventilation is one of the passive cooling methods which are used in buildings, and it depends on the use of renewable-energy sources for cooling purposes. This method is usually used in traditional courtyard houses in places with hot dry climates. The attention for such a type of house is increasing due to the global shortage of energy supplies. The performance depends on many factors, but some of them intersect with other building requirements. For...

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