Spray & Combustion

Course duration: 2 days
Course schedule: To suit users requirements

Who should attend

It is recommended that users who will be undertaking spray and/or combustion simulations, and who have little or no experience in this type of modelling, attend this course. The domains of application are automotive, chemical engineering, power generation, biomedical.

Course aims

The course is aimed at giving the User an understanding of how to set up the spray, ignition and combustion models that are available in STAR-CD. The course also discusses the areas of application of these models and highlights their advantages and limitations. Hands-on experience in setting-up, running and post-processing is gained by the use of worked examples.The course also offers the User the opportunity to discuss the application of these methodologies to their case with an experienced Engineer.

Course structure

The course structure is designed to take the User through the various stages of setting up a model involving spray, ignition and combustion and then use worked examples to demonstrate these stages.

Course content

The content of the course, based on the above aims and structure, is as follows;

1) Spray modeling : This section covers the modelling issues involved with simulating spray injection and the models available for use in STAR-CD to achieve this. It discusses the flow of liquid fuel in a nozzle, the atomisation process of the spray core as it enters the flow domain, droplet break-up and the interchange of mass, momentum and energy with the surrounding fluid. It also discusses droplet-droplet and droplet-wall interaction.

2) Ignition modeling : This section discusses the types of ignition models that are available for use in STAR-CD and how they are set-up in order to start the combustion process.

3) Combustion modeling : This section presents the combustion models that can be used to simulate the combustion process. It discusses the models available in STAR-CD that assume pre-mixed and non-premixed flames and briefly discusses coal combustion. It also discusses emissions and the formation of NOx. Throughout the course the advantages and limitations of each model and its range of applicability is discussed. Worked examples are undertaken that give hands-on experience and include modelling a direct injection diesel combustion chamber case, initially with spray and then with combined spray and combustion, and combustion in an idealised gas turbine combustor using the non-adiabatic ppdf method. 4)Coming soon: An optional additional day on STAR/KINetics with version 3.22, including how to prepare the files, the new graphical interface, two hands on exercices and the documentation.

Course requirements

The User should have a good working knowledge of
pro-STAR and STAR v3.2 or 3.22 and some background in combustion theory.