JGonzalez
2486ef6316
Reduction in 10-20% of time spend in pushing in 2DCyl thanks to rewriting fPsi and dPsi.
157 lines
3.7 KiB
Fortran
157 lines
3.7 KiB
Fortran
!Module to solve the electromagnetic field
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MODULE moduleEM
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IMPLICIT NONE
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TYPE:: boundaryEM
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CHARACTER(:), ALLOCATABLE:: typeEM
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INTEGER:: physicalSurface
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REAL(8):: potential
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CONTAINS
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PROCEDURE, PASS:: apply
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END TYPE boundaryEM
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INTEGER:: nBoundaryEM
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TYPE(boundaryEM), ALLOCATABLE:: boundEM(:)
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!Information of charge and reference parameters for rho vector
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REAL(8), ALLOCATABLE:: qSpecies(:)
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CONTAINS
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!Apply boundary conditions to the K matrix for Poisson's equation
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SUBROUTINE apply(self, edge)
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USE moduleMesh
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IMPLICIT NONE
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CLASS(boundaryEM), INTENT(in):: self
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CLASS(meshEdge):: edge
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INTEGER, ALLOCATABLE:: nodes(:)
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INTEGER:: n
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nodes = edge%getNodes()
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DO n = 1, SIZE(nodes)
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SELECT CASE(self%typeEM)
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CASE ("dirichlet")
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mesh%K(nodes(n), :) = 0.D0
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mesh%K(nodes(n), nodes(n)) = 1.D0
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mesh%nodes(nodes(n))%obj%emData%type = self%typeEM
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mesh%nodes(nodes(n))%obj%emData%phi = self%potential
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END SELECT
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END DO
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END SUBROUTINE
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!Assemble the source vector based on the charge density to solve Poisson's equation
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SUBROUTINE assembleSourceVector(vectorF)
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USE moduleMesh
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USE moduleRefParam
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IMPLICIT NONE
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REAL(8), INTENT(out):: vectorF(1:mesh%numNodes)
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REAL(8), ALLOCATABLE:: localF(:)
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INTEGER, ALLOCATABLE:: nodes(:)
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REAL(8), ALLOCATABLE:: rho(:)
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INTEGER:: nNodes
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INTEGER:: e, i, ni
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CLASS(meshNode), POINTER:: node
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!$OMP SINGLE
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vectorF = 0.D0
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!$OMP END SINGLE
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!$OMP DO REDUCTION(+:vectorF)
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DO e = 1, mesh%numCells
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nodes = mesh%cells(e)%obj%getNodes()
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nNodes = SIZE(nodes)
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!Calculates charge density (rho) in element nodes
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ALLOCATE(rho(1:nNodes))
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rho = 0.D0
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DO i = 1, nNodes
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ni = nodes(i)
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node => mesh%nodes(ni)%obj
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rho(i) = DOT_PRODUCT(qSpecies(:), node%output(:)%den/(vol_ref*node%v*n_ref))
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END DO
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!Calculates local F vector
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localF = mesh%cells(e)%obj%elemF(rho)
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!Assign local F to global F
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DO i = 1, nNodes
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ni = nodes(i)
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vectorF(ni) = vectorF(ni) + localF(i)
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END DO
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DEALLOCATE(localF)
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DEALLOCATE(nodes, rho)
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END DO
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!$OMP END DO
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!Apply boundary conditions
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!$OMP DO
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DO i = 1, mesh%numNodes
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node => mesh%nodes(i)%obj
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SELECT CASE(node%emData%type)
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CASE ("dirichlet")
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vectorF(i) = node%emData%phi
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END SELECT
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END DO
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!$OMP END DO
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END SUBROUTINE assembleSourceVector
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!Solving the Poisson equation for electrostatic potential
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SUBROUTINE solveElecField()
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USE moduleMesh
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USE moduleErrors
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IMPLICIT NONE
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INTEGER, SAVE:: INFO
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INTEGER:: n
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REAL(8), ALLOCATABLE, SAVE:: tempF(:)
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EXTERNAL:: dgetrs
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!$OMP SINGLE
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ALLOCATE(tempF(1:mesh%numNodes))
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!$OMP END SINGLE
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CALL assembleSourceVector(tempF)
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!$OMP SINGLE
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CALL dgetrs('N', mesh%numNodes, 1, mesh%K, mesh%numNodes, &
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mesh%IPIV, tempF, mesh%numNodes, info)
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!$OMP END SINGLE
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IF (info == 0) THEN
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!Suscessful resolution of Poission equation
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!$OMP DO
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DO n = 1, mesh%numNodes
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mesh%nodes(n)%obj%emData%phi = tempF(n)
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END DO
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!$OMP END DO
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ELSE
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!$OMP SINGLE
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CALL criticalError('Poisson equation failed', 'solveElecField')
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!$OMP END SINGLE
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END IF
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!$OMP SINGLE
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DEALLOCATE(tempF)
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!$OMP END SINGLE
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END SUBROUTINE solveElecField
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END MODULE moduleEM
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