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The method of ignitability estimation simulation of the spark plug in engine cylinder that considered engine conditions and misfire was developed. This method is consisted by creating engine model from 3D scan, flow simulation model in engine cylinder with verification by PIV, spark displacement model and detailed chemical kinetics of gasoline surrogate fuel. The ignitability of four types of spark plug with different shapes of ground electrode was calculated. In this result, correlation was seen with the experiment. In another calculation, in-cylinder flow was found out to have the largest...
Sound source prediction/reduction has become a critical topic of investigation in the automotive and household appliance industries. Acoustic comparison can be achieved using the steady state result to minimize computational cost especially when a particular model has to be chosen amongst several test geometries. This presentation illustrates several examples of aeroacoustic calculation performed by STAR-CCM+.
An overview is presented of key methodologies in STAR-CCM+ and STAR-CD for simulating disperse multiphase flows involving droplets, solid particles and/or liquid films, including: atomisation; particle dynamics and heat/mass transfer; wall impact and erosion; and liquid film dynamics, heat/mass transfer and melting/solidification. Examples are shown of validation studies and applications in the aerospace, automotive, oil/gas and manufacturing and medical fields.
New capabilities in modeling multiphase flows using the Eulerian Multiphase (EMP) model are demonstrated by examples. These new capabilities include granular model for multi-size particle flows, RSM for turbulent multiphase flows, multi-component boiling model for evaporation of chemical species and the Adaptive-MUSIG (A-MUSIG) population balance model for poly-dispersed flows.
Unexpected and costly thermally induced failures have been reported at power as well as process plants. The failures are caused by complex thermal-hydraulic mechanisms classified as Thermal Stratification, Cycling and Striping (TASCS). These mechanisms can cause fatigue cracking, pipe deformations, pipe support damage, and additionally lead to anticipated equipment failure. Three-dimensional, transient CFD simulations are necessary in order to predict the nature of these failures. The analyzed phenomena are diverse and complicated because of the wide variety of thermal-hydraulic and...
The presentation describes the evolution of features made available in recent releases and new capabilities that will be available within the forthcoming v4.22 release and their application to in-cylinder engine calculations. These include: Further development of combustion models including dual-fuel combustion such as diesel-natural gas; Support for 3rd party chemistry within the advanced ECFM and PVM-MF combustion models; Crank-angle resolved Conjugate Heat Transfer (CHT) analysis and automated meshing using STAR-CCM+.
Multiphase and reacting flow simulation capabilities of STAR-CCM+ is increasing with every release. This makes it possible to solve advanced level problems in the chemical processing industry. Some of the largest chemical companies around the world use STAR-CCM+ for addressing challenging day to day problems. A few pertinent enhancements from this year will be reviewed. Then some recent validation and case studies in gas-liquid flow, fixed bed reactor modeling and heater design optimization will be presented.
This presentation will provide recent examples of our work for all three major components of the gas turbine, compressor, combustor, turbine, i.e. we will present examples on the following sub-topics: Multi-stage flow simulation of axial compressor (Heavy Duty GT) and coupling to our ACF compressor design tool DLN combustor analysis (industrial GT) Turbine Cooling: Upgrade of E-Class Heavy Duty GT Advanced Film Cooling Technology: 1st Rotor Blade of industrial GT
An overview of the challenges of FSI will be presented along with the capabilities available in STAR-CCM+ to meet those challenges. The topics will include: a) Data mapping techniques b) Protocols and formats for exchanging data between CFD and CSM codes c) Coupling methods for stability and accuracy d) Techniques for dynamic fluid mesh evolution e) Validation of FSI results A technical overview under each of these topics will be provided. A range of examples which demonstrate the STAR-CCM+ FSI capabilities and validate the accuracy will be shown. The examples span analytical and experimental...
Recently, electric motor is required high efficiency and smaller. In order to satisfy high reliability, importance of thermal management for electric motor is rising. In this session, we introduce thermal management of electric motor by STAR-CCM+, SPEED and JMAG.* *JMAG is a registered trademark owned by JSOL Corporation.