Advanced Modeling

Course Duration: To suit users requirements
Course Schedule: To suit users requirements

Who Should Attend

It is recommended that users who wish to gain a deeper understanding of the theory used by STAR-CD, in order to implement this into the way they set-up solutions, attend this course.

Course Aims

The course is aimed at giving the User a deeper understanding of the theoretical issues associated with using the STAR solver. The course also offers the User the opportunity to discuss the theory given in the courses with an experienced Engineer. Course Structure The course structure is of a modular fashion so that the User can tailor the course to suit their particular requirements or interests.

Course Content

There is no set content for this course, this is a matter for the User to define in consultation with Computational Dynamics. However, some modules have already been written and are as follows;

1) Spatial Discretisation : This module introduces the concepts of accuracy, stability and boundedness of a discretisation scheme and discusses how these concepts can affect the computational prediction. An overview of the STAR-CD discretisation schemes in relation to these concepts is then given and examples are then used to illustrate these criteria.

2) Turbulence Modelling : This module discusses the turbulence modelling options that are available in STAR-CD. The main focus is on the class of turbulence models which utilise the eddy viscosity concept. This includes the high and low Reynolds number models as well as the two-layer approach and the anisotropic models. A brief discussion of the higher order Reynolds stress and LES models is also given.

3) Boundary Conditions : This module gives an overview of the types of boundary condition implemented in STAR-CD, describes the constraints they apply and their range of applicability. It also discusses consistent combinations of boundary conditions for various flow regimes and gives some hints for handling them.

4) Mesh Structure and Motion : This module discusses the fundamental concepts of an unstructured mesh and its quality. This introduces the concepts and the effects of cell skewness, kinks in cell connectivity and variations in cell sizes. The module then discusses "pro*am" cells, the treatment of static and sliding interfaces and cell removal and addition.

5) Multiple Rotating Frames : This module discusses the alternative methodologies to moving mesh calculations that are available in STAR-CD, namely the Implicit and Explicit Muli Rotating Frame methodologies.

6) Solution Algorithms : This module gives an overview of the solution algorithms that are available for use in STAR-CD, the PISO, SIMPLE and SIMPISO algorithms and discusses features that are common to all of them. The module then discusses each algorithm individually. The linear Conjugate Gradient solver is then reviewed.

Course Requirements

The only requirement associated with attending this course is that the User should be experienced in using STAR-CD.