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New combustion concepts like PPC and RCCI have demonstrated very high indicated efficiencies together with a potential for low engine out emissions. But the implementation of those combustion concepts in engine concepts remains a challenge. A number of issues like boosting, load range, EGR control and transients have to be addressed. Integration of different technologies into an engine concept is done with gas exchange simulations. But how is the combustion in the gas exchange simulations modeled when new combustion concepts are utilized? Iterating with 1-cylinder testing and 3D combustion...
Commercial fluidization technologies can benefit from a deeper understanding of the interplay between the dynamics of the fluids and solids in these multiphase processes. Dispersed-phase and particulate systems, such as precipitation, crystallization, particle formation in aerosols and fluidization, can be modeled using the Population Balance Equation (PBE) approach to describe different particle properties. In our research, we have implemented this PBE approach into our High Performance Computing (HPC) STAR-CCM+ simulations. In particular, we are using the Direct Quadrature Method of Moments...
A CFD study using STAR-CCM+ 7.04 is performed to simulate an industrial heater with burners firing refinery gas fuel. The heater has been reported with short run length due to coking inside the process tubes. Heater, burners and combustion air duct are included in the modeled geometry. Turbulence, combustion and radiation models are activated to simulate the environment inside the heater. System analysis is performed such as combustion flame pattern, temperature and velocity fields, heat flux and temperature distribution at various locations etc. Non-uniform heat flux distribution on process...
Polyester based Multi-Layered Films (MLFs) form a major part of DuPont Teijin Films' (DTF) product portfolio. Such MLFs are formed when different polymer melt layers come together in a process known as coextrusion. The main coextrusion geometries used at DTF are: • an injector block linked to a die and • a multi-manifold die. As the thickness and melt flow properties of the layers become more differentiated, it becomes more difficult to control individual layer width and thickness of an MLF. CD-adapco’s STAR-CCM+ is used to improve the layer control of current MLFs, reducing the potential...
STAR-CCM+ is a leading CFD software used in a wide variety of industries. Chemical and allied industries increasingly use STAR-CCM+ for design, optimization and troubleshooting of process plants. CD-adapco has made tremendous progress in CFD simulation capabilities of STAR-CCM+ over the past few years, making it a prominent simulation tool for chemical and pharmaceutical industries. A review of key capabilities relevant to the chemical industry emphasizing CD-adapco’s commitment to the chemical industry will be given. These will be put in perspective of the needs identified by the industry...
As capabilities and features in STAR-CCM+ continuously become more numerous and sophisticated, there is an increasing demand in Verification, Validation and Visualisation. Especially in general engineering and building services, where customers do not have a distinct CFD background, the simulations have to bear more critical assessments because of targeting a more sceptical audience. Thus, it is extremely essential to validate simulation against experiment, empirical approach and literature most intelligible to a wide range of customers and show the results in a vivid and realistic way. Still...
The importance of coupled simulations of aerodynamics and heat transfer in the development of stationary gas turbines and aero engines is growing steadily in order to minimize development costs and effort. Conjugate heat transfer calculations can reduce those efforts and cost significantly, e.g. by reducing the quantity of experimental tests. As a result, the quality of numerical results becomes an important issue. In addition, due to more and more complex models, the set-up and validation of the numerical calculations is also of high importance. This presentation will show the set-up and...
A recently installed Victory Energy boiler is supplied with fresh air through custom ductwork supplied by a third party. This custom ductwork was subject to severe space limitations. During the initial startup, vibrations occurred in the ductwork between the fan and the burner windbox. As the load reached 50%, the frequency and strength of these vibrations increased to the point where they threatened the structural integrity of the ductwork. Even though they had not supplied the ductwork, Victory Energy hired BMA to pinpoint and address this problem. Steady state CFD simulations of the...
Architects and engineers are continually pushing the limits of design through the use of novel building shapes and mixed mode ventilation systems. Analysis techniques must be sufficiently sophisticated to follow suit, especially with respect to the life safety aspects of the design. The mixed mode emergency ventilation system described in this work and proposed for a semi-enclosed bus terminal is a typical example. The terminal connects to a pedestrian mall and has a unique scalloped façade. STAR-CCM+ was used to aid in the design of the emergency ventilation system consisting of sprinklers...
LED manufacturers sort LEDs into 'bins' based on the forward voltage to give their customers the most consistent light color possible. Manufacturing tolerances can cause a range of colors even in the same batch of LEDs, so this binning process gives their customers higher consistency in the color produced. Despite the tight grouping of forward voltages in these bins, inherent LED characteristics can still result in non-homogeneous current draw, luminous flux, heat dissipation and junction temperature. This highly interconnected process was investigated using STAR-CCM+ and SPICE to simulate...

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