Course Content
The training is structured into 3 stages across the duration of 2 days.
Stage 1: Building the coupled models
The one-dimensional and three-dimensional flow models are similar to ones used for stand-alone analyses, but differ in several aspects. These differences include not only the hooks for the actual coupling of the two models, but also modifications to improve the stability of the coupled analysis. The training will cover:
- Using a CAD-generated surface, build a STAR model in pro-am.
- Applying the proper boundary conditions and fluid properties
- Modifying an existing 1D model to couple with the STAR model
Stage 2: Running the coupled models
During the analysis, STAR-CD and GT-Power run simultaneously, exchanging data at the boundaries for each time step. It is necessary to continue the analysis until a cyclically-repeating solution is achieved. The training will include:
- Selecting an appropriate time step size
- Running a sufficient number of cycles to achieve convergence
- Using Excel to plot the data in the ERD files in order to monitor flow behaviour and determine convergence.
Stage 3: Post-processing
The coupled 1D/3D analysis produces a tremendous amount of data, which must be post-processed in order to be able to understand the complex three-dimensional flow behaviours. The training will include:
- Running pro-star in batch mode to produce still images of flow behaviour
- Creating animated GIF’s in order to view the flow
The course will include building and running a coarse model. Participants will be allowed to take the files away with them after the training.
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