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| * '''PFEM2D discretize Rectangle $startNodeTag $X1 $Y1 $hx $hy $angle $Nx $Ny $Ndf <-fix $fixList -mass $massList -vel $velList -boundary $boundaryList>'''
| | [[FSI | < Back]] |
| ** Discretizes a rectangular area in to nodes for subsequent triangulation and PFEM analysis
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| ** '''startNodeTag''' -- tag of the first node that is created
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| ** '''X1 Y1''' -- global X and Y coordinates of the lower left corner of the rectangle
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| ** '''hx hy''' -- division length in the local x and y directions of the rectangle
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| ** '''angle''' -- angle of rotation between the local x axis of the rectangle and the global X axis
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| ** '''Nx Ny''' -- number of divisions in the local x and y directions of the rectangle
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| ** '''Ndf''' -- number of degrees of freedom for each node that is created
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| ** '''fixList''' -- list of fixity values applied to all nodes that are created (1 = fixed, 0 = free, default = "0 0")
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| ** '''massList''' -- list of mass values applied to all nodes that are created (default = "0 0")
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| ** '''velList''' -- list of initial velocity applied to all nodes that are created (default = "0 0")
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| ** '''boundaryList''' -- list of codes for including boundary nodes on the sides of the rectangle (1 = include, 0 = omit, default = "1 1 1 1")
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| ** The return value from this command is the tag of the last node created
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| | <span id="pyPFEMAnalysis"></span> |
| | '''analysis'''('' 'PFEM', dtmax, dtmin, gravity[, ratio]'') [[#pyPFEMAnalysis|¶]] |
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| * '''PFEM2D fluid $nodeList <-append>'''
| | <blockquote>construct the PFEM Analysis object.</blockquote> |
| ** Assigns nodes to be fluid nodes
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| ** '''nodeList''' -- list containing the start and end nodes for assignment
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| ** '''-append''' -- appends the nodes to the current set of fluid nodes (default = overwrites the current set)
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| * '''PFEM2D structure $nodeList <-append>'''
| | {| class="wikitable" |
| ** Assigns nodes to be structure nodes
| | |- |
| ** '''nodeList''' -- list containing the start and end nodes for assignment
| | ! rowspan="4"| Parameters: |
| ** '''-append''' -- appends the nodes to the current set of structure nodes (default = overwrites the current set)
| | |* '''dtmax''' (''float'') - maximum time step |
| | | |- |
| | | |* '''dtmin''' (''float'') – minimum time step |
| * '''element PFEMElement2D $tag $ndI $ndJ $ndK $rho $mu $bX $bY <$thickness>''' | | |- |
| ** Creates a triangular fluid element for 2D PFEM analysis
| | |* '''gravity''' (''float'') – the gravity acceleration for fly-out nodes, up is positive. |
| ** '''tag''' -- idenifying element tag
| | |- |
| ** '''ndI ndJ ndK''' -- connected element nodes (should be defined in counter-clockwise order around the element)
| | |* '''ratio''' (''float'') – the ratio for automatic reducing time step size. |
| ** '''rho''' -- fluid density
| | |- |
| ** '''mu''' -- fluid viscosity
| | ! |Returns: |
| ** '''bX bY''' -- body forces in the global X and Y directions
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| ** '''thickness''' -- out of plane element thickness (default = 1.0)
| | |- |
| | | ! |Return Type: |
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| * '''PFEM2D doTriangulation $alpha -nodes $nodeList -PFEMElement2D "$startEleTag $rho $mu $bX $bY <$thickness>"'''
| | None |
| ** Triangulates the given nodes in to a mesh of fluid elements for 2D PFEM analysis
| | |} |
| ** '''alpha''' -- alpha-shape parameter for identifying boundaries (usually between 1.4 and 1.5)
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| ** '''$nodeList''' -- list containing the start and end node tags for triangulation
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| ** '''$startEleTag''' -- tag of the first element that is created
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| ** '''$rho $mu $bX $bY <$thickness>''' -- see '''PFEMElement2D''' command
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| ** The return value from this command is the tag of the last element created
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| * '''analysis PFEM $dtmax $dtmin'''
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| ** Creates a PFEM analysis object
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| ** '''dtmax dtmin''' -- the maximum and minimum time steps to be used during the analysis
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| ''More commands will be documented soon''
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| Code maintained by: [http://web.engr.oregonstate.edu/~mhscott Michael H. Scott, Oregon State University]
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