OpenFOAM - Revision history

Bendikhansen: /* Quick summary */

2020-09-18T09:29:49Z

Quick summary

António at 08:58, 12 April 2020

2020-04-12T08:58:18Z

António: /* Introduction */

2020-04-12T08:57:19Z

Introduction

Bendikhansen at 13:22, 5 April 2020

2020-04-05T13:22:16Z

Bendikhansen: Text replacement - "=Mitigation measures where MTD might be applied=" to "=Relevant mitigation measures and test cases="

2020-01-22T08:33:13Z

Text replacement - "=Mitigation measures where MTD might be applied=" to "=Relevant mitigation measures and test cases="

Bendikhansen at 12:59, 20 January 2020

2020-01-20T12:59:12Z

Bendikhansen at 11:26, 20 January 2020

2020-01-20T11:26:43Z

Bendikhansen at 13:15, 29 October 2019

2019-10-29T13:15:00Z

Bendikhansen at 13:02, 24 June 2019

2019-06-24T13:02:44Z

Bendikhansen at 12:36, 24 June 2019

2019-06-24T12:36:53Z

@@ Line 4: / Line 4: @@
 [[file:openfoam_structure.png|thumb|250px|Figure 2: Case directory structure in OpenFOAM (source: CFD Direct ® OpenFOAM)]]
 [[file:openfoam_structure2.png|thumb|250px|Figure 3: Overview of OpenFOAM structure (source: CFD Direct ® OpenFOAM).]]
-[[file:openfoam_paraview.png|thumb|250px|Figure 3: Example of ParaView visualization of OpenFOAM simulation results showing horizontal flow velocities in a rectangular channel with a curved bar rack (CBR) for horizontal plane at 0.2 m (a). Deviation (in percent) of the ratio between tangential vt and normal velocities vn for the MCR compared to the situation without screen 5 cm (b) and 40 cm (c) upstream of the screen axis. The black arrows represent the flow direction (source: VAW).]]
+[[file:openfoam_paraview.png|thumb|250px|Figure 4: Example of ParaView visualization of OpenFOAM simulation results showing horizontal flow velocities in a rectangular channel with a curved bar rack (CBR) for horizontal plane at 0.2 m (a). Deviation (in percent) of the ratio between tangential vt and normal velocities vn for the MCR compared to the situation without screen 5 cm (b) and 40 cm (c) upstream of the screen axis. The black arrows represent the flow direction (source: VAW).]]
 Developed by: 2018 (OpenFOAM release v1812)

@@ Line 19: / Line 19: @@
 OpenFOAM is supplied with a pre- and post-processing environment. The interface to the pre- and post-processing are OpenFOAM utilities, thereby ensuring consistent data handling across all environments. The overall structure of OpenFOAM is shown in Figure 3.
-In the pre-processing, simple meshes containing blocks of hexahedral cells can be generated by the blockMesh utility. For more complex geometries, the snappyHexMesh utility automatically generates meshes containing split-hexahedral cells by iteratively refining the starting mesh and morphing the resulting split-hex mesh to the triangulated surface of solid geometrical structures like power plant facilities (see Figure 2). Solid structures are represented in the form of stereolithographic files (STL).
+In the pre-processing, simple meshes containing blocks of hexahedral cells can be generated by the blockMesh utility. For more complex geometries, the snappyHexMesh utility automatically generates meshes containing split-hexahedral cells by iteratively refining the starting mesh and morphing the resulting split-hex mesh to the triangulated surface of solid geometrical structures like power plant facilities (Figure 2). Solid structures are represented in the form of stereolithographic files (STL).
 The main post-processing tool provided with OpenFOAM is the reader module paraFoam that uses ParaView, an open-source visualization software to display geometry, computational mesh and simulation results (Figure 4).

@@ Line 13: / Line 13: @@
 =Introduction=
-OpenFOAM is a C++ toolbox for simulation of general continuum mechanics problems including the Navier-Stokes equations that mathematically describe the 3D motion of fluids. For simulations of free-surface gravity flows, the prebuilt Eulerian’ solver interFOAM is most suitable. The interFOAM solver identifies the interface between water and air based on the Volume Of Fluid (VOF) method and uses the PIMPLE algorithm for pressure-velocity coupling. The governing flow equations can be solved in combination with different approaches for turbulence modelling. In OpenFOAM, Reynolds-averaged Navier-Stokes (RANS) models using one or two equation turbulence models (e.g. k-ε model) as well as more computationally expensive large eddy simulation (LES) methods are available. An advantage of OpenFOAM, besides its free availability, is the use of body-fitted or unstructured computational grids. The additional use of polyhedral cells (in addition to hexahedral cells) allows even complex geometries to be accurately mapped (Figure 1).
+OpenFOAM is a C++ toolbox for simulation of general continuum mechanics problems including the Navier-Stokes equations that mathematically describe the 3D motion of fluids. For simulations of free-surface gravity flows, the prebuilt Eulerian’ solver interFOAM is most suitable. The interFOAM solver identifies the interface between water and air based on the Volume of Fluid (VOF) method and uses the PIMPLE algorithm for pressure-velocity coupling. The governing flow equations can be solved in combination with different approaches for turbulence modelling. In OpenFOAM, Reynolds-averaged Navier-Stokes (RANS) models using one or two equation turbulence models (e.g. k-ε model) as well as more computationally expensive large eddy simulation (LES) methods are available. An advantage of OpenFOAM, besides its free availability, is the use of body-fitted or unstructured computational grids. The additional use of polyhedral cells (in addition to hexahedral cells) allows even complex geometries to be accurately mapped (Figure 1).
 =Application=

@@ Line 3: / Line 3: @@
 [[file:openfoam_grid.png|thumb|250px|Figure 1: Example of turbine inlet (flow in x-direction) modelled using an unstructured computational grid for OpenFOAM simulations (source: VAW).]]
 [[file:openfoam_structure.png|thumb|250px|Figure 2: Case directory structure in OpenFOAM (source: CFD Direct ® OpenFOAM)]]
-[[file:openfoam_structure2.png|thumb|500px|Figure 3: Overview of OpenFOAM structure (source: CFD Direct ® OpenFOAM).]]
+[[file:openfoam_structure2.png|thumb|250px|Figure 3: Overview of OpenFOAM structure (source: CFD Direct ® OpenFOAM).]]
-[[file:openfoam_paraview.png|thumb|500px|Figure 3: Example of ParaView visualization of OpenFOAM simulation results showing horizontal flow velocities in a rectangular channel with a curved bar rack (CBR) for horizontal plane at 0.2 m (a). Deviation (in percent) of the ratio between tangential vt and normal velocities vn for the MCR compared to the situation without screen 5 cm (b) and 40 cm (c) upstream of the screen axis. The black arrows represent the flow direction (source: VAW).]]
+[[file:openfoam_paraview.png|thumb|250px|Figure 3: Example of ParaView visualization of OpenFOAM simulation results showing horizontal flow velocities in a rectangular channel with a curved bar rack (CBR) for horizontal plane at 0.2 m (a). Deviation (in percent) of the ratio between tangential vt and normal velocities vn for the MCR compared to the situation without screen 5 cm (b) and 40 cm (c) upstream of the screen axis. The black arrows represent the flow direction (source: VAW).]]
 Developed by: 2018 (OpenFOAM release v1812)

@@ Line 22: / Line 22: @@
 The main post-processing tool provided with OpenFOAM is the reader module paraFoam that uses ParaView, an open-source visualization software to display geometry, computational mesh and simulation results (Figure 4).
-=Mitigation measures where MTD might be applied=
+=Relevant mitigation measures and test cases=
 {{Suitable measures for OpenFOAM}}

@@ Line 1: / Line 1: @@
 [[file:openfoam_logo.png|right|250px]]
 =Quick summary=
 [[file:openfoam_grid.png|thumb|250px|Figure 1: Example of turbine inlet (flow in x-direction) modelled using an unstructured computational grid for OpenFOAM simulations (source: VAW).]]
 [[file:openfoam_structure.png|thumb|250px|Figure 2: Case directory structure in OpenFOAM (source: CFD Direct ® OpenFOAM)]]
@@ Line 22: / Line 21: @@
 In the pre-processing, simple meshes containing blocks of hexahedral cells can be generated by the blockMesh utility. For more complex geometries, the snappyHexMesh utility automatically generates meshes containing split-hexahedral cells by iteratively refining the starting mesh and morphing the resulting split-hex mesh to the triangulated surface of solid geometrical structures like power plant facilities (see Figure 2). Solid structures are represented in the form of stereolithographic files (STL).
 The main post-processing tool provided with OpenFOAM is the reader module paraFoam that uses ParaView, an open-source visualization software to display geometry, computational mesh and simulation results (Figure 4).
 =Other information=

@@ Line 12: / Line 12: @@
 Type: [[:Category:Tools|Tool]]
-Suitable for the following [[::Category:Measures|measures]]:
+Suitable for the following [[:Category:Measures|measures]]:
 =Introduction=