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Design & Evaluation of a Passive Micromixer with Curved Shape Obstacles & Grooves in the Mixing Channel
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...
CD-adapco's vision of STAR-CCM+ in Chemical Industry
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.
Analysis of the Coffee Roasting Process under Actual Operating Conditions
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...
Use of Numerical Modeling to Improve the Performance of Night Ventilation
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...
Stadium Design for Enhanced Cooling
Many outdoor sports facilities in the world are in climates where the external conditions are uncomfortable. Ideally, these stadia would not come with restrictions on when they can be used (time of day, seasonally) and how they can be used (play duration). However, both heat stress and wind chill become factors in the play of the game. In cold climates, the objective is to keep winds out. In hot climates, the objective can be to either maximize ventilation - for cooling purposes - or minimize wind infiltration if active measures or thermal mass based passive measures are to be used for...
Annual Building Energy Simulation with STAR-CCM+
According to the Institute for Energy of the European Commission Joint Research Centre, HVAC (Heating, Ventilation and Air Conditioning) accounted for 11% of the EU electricity consumption in 2007. Annual energy simulations of buildings are increasingly being used for optimization of energy consumption. These simulations primarily rely on one-dimensional methods. Computational Fluid Dynamics on the other hand are generally utilized in building applications among others for predicting thermal comfort and developing HVAC components. Currently annual CFD simulation of one room or even an entire...
Annual Building Energy Simulation with STAR-CCM+
According to the Institute for Energy of the European Commission Joint Research Centre, HVAC (Heating, Ventilation and Air Conditioning) accounted for 11% of the EU electricity consumption in 2007. Annual energy simulations of buildings are increasingly being used for optimization of energy consumption. These simulations primarily rely on one-dimensional methods. Computational Fluid Dynamics on the other hand are generally utilized in building applications among others for predicting thermal comfort and developing HVAC components. Currently annual CFD simulation of one room or even an entire...
Streamlining Aircraft Icing Simulations
Aircraft icing is a major concern in aircraft development because it can degrade aerodynamic and engine performance, produce false indications on flight instruments, and prevent correct operation of control surfaces, landing gear, and brakes. This presentation will discuss simulation of aircraft icing topics, from design of thermal ice protection systems to prediction of accreted ice shapes and performance degradation. Various challenges, modeling approaches, and results will be presented. Historically, such simulations have been rather segmented, with much time and effort spent passing...
Numerical Aero-Thermal Investigation for a Science Payload in a Dust Devil Boundary-Layer on Mars
NASA Discovery Program mission - planned for a March 2016 launch - that will place a single geophysical lander in the southern Elysium region of Mars to study its deep interior
The noise of radial fans with Forward-Curved (FC) blades, which are used in the automotive industry as well as HVAC applications, is associated with a dominant tonal noise that stems from the interaction between the unsteady flow leaving the impeller passages and the volute tongue (cut-off). Reducing the tonal noise in FC fans is a challenging task, considering the fact that the optimum operation of this type of fan is completely dependent on employing a properly designed scroll-housing. Performing CFD simulations not only helps us to understand the flow characteristics of this type of fan,...

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