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TransAT Tutorial Manual                                      2.3. Flow in an obstructed pipe


               2.3     Flow in an obstructed pipe


               2.3.1    Prerequisites
                   • TransAT

                   • TransATUI

                   • Paraview (or Tecplot)


               2.3.2    Problem Description
               In this tutorial, the Immersed Surface Technology (IST) and Block Mesh Refinement (BMR)
               feature of TransAT are coupled to simulate a single-phase flow through a pipe in 3D. A disk is
               fixed at the center of the pipe at 0.2 meters downstream the inlet. Water flows in through an
               inlet at a velocity of 0.005 m/s with a laminar profile. The aim is to get a unsteady solution of
               the velocity profile in the pipe.

               2.3.3    Problem Setup

                   • Domain: 0.762m × 0.22m × 0.22m resolved by a mesh of 30 × 25 × 25 cells.

                   • Inflow: velocity 0.005 m/s, laminar velocity inflow.

                   • Outflow: fixed pressure

                   • Fluid: Water
                   • Reynolds number = 778

                   • Pipe diameter = 6 inch (15.24 cm)

                   • Disk dimensions: 3 inch diameter, set in the center of the pipe

                   • Ratio  L  = 5
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Ascomp AG Switzerland                    70                                   Version 5.7
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