FLOW AROUND A CYLINDER - istiarto

Chapter 5
– 5.i –
5 Numerical Simulation 5.1
Abstract ...................................................................................................................... 5.1
Résumé ....................................................................................................................... 5.1
5.1 Introduction .................................................................................................... 5.2
5.2 Experimental data .......................................................................................... 5.3
5.2.1 Flow around a cylinder on a flat channel bed .............................................. 5.3
5.2.2 Flow around a cylinder in a scoured channel bed ........................................ 5.3
5.3 Model calibration of k s and h ∞ ...................................................................... 5.4
5.3.1 Computational domain ................................................................................ 5.4
5.3.2 Boundary and initial conditions................................................................... 5.5
5.3.3 Calibration results ....................................................................................... 5.6
5.4 Test run using uniform flow condition .......................................................... 5.8
5.4.1 Boundary and initial conditions................................................................... 5.8
5.4.2 Results of the test runs ................................................................................ 5.9
5.4.3 Conclusions .............................................................................................. 5.13
5.5 Simulation of flow around a cylinder on a flat channel bed ....................... 5.17
5.5.1 Computational domain .............................................................................. 5.17
5.5.2 Boundary and initial conditions................................................................. 5.17
5.5.3 Results of the simulation and comparison to the experimental data ........... 5.19
5.5.4 Conclusions .............................................................................................. 5.28
5.6 Simulation of flow around a cylinder in a scoured channel bed ................. 5.28
5.6.1 Computational domain .............................................................................. 5.28
5.6.2 Boundary and initial conditions................................................................. 5.29
5.6.3 Results of the simulation and comparison to the experimental data ........... 5.31
5.6.4 Conclusions .............................................................................................. 5.44
5.7 Summary and conclusions ............................................................................ 5.44
5.8 Recommendations for future works............................................................. 5.45
References................................................................................................................. 5.48
Notations ................................................................................................................... 5.48