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Chapter 10
TransAT Convergence Control
module: SarP
10.1 Flow past a backward facing step
10.1.1 Prerequisites
• TransAT
• TransATUI
• TransAT Python Environment
• Paraview (or Tecplot)
10.1.2 Introduction
In this tutorial, a laminar flow past a backward facing step is studied. The step is modelled
by means of the Immersed Surface Technique (IST). This test case is a demonstration of the
TransAT Smart Adaptive Run Parametrisation (SarP) module. Solver and control parameters
can be controlled and automatically tuned, as demonstrated by Ghorbel et al. (2019). In this
tutorial the simulation will be run in both normal mode, i.e. without the activation of the SarP
module, and SarP stability mode. For this purpose two simulation setups will be created from a
template TransAT project and run.
10.1.3 Launching TransATUI
• Double-click the TransAT icon on the Desktop.
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