Automatic decomposition and efficient semi-structured meshing of complex solids

Makem, Jonathan E.; Armstrong, Cecil; Robinson, Trevor

doi:10.1007/s00366-012-0302-x

Cited by 22 publications

(17 citation statements)

References 16 publications

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“…As the automated time includes the generation of the non-manifold model and extracting the topology into the data structure the actual query time is insignificant and the time-saving grows as more interface regions need to be defined. Computational efficiency and mesh validation studies for the decomposed and mixed-dimensional analyses for the industrial use case model can be found in [8,10].…”

Section: Discussion and Future Workmentioning

confidence: 99%

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Interface Management for Automating Finite Element Analysis Workflows

Tierney¹,

Nolan²,

Robinson³

et al. 2016

Computer-Aided Design and Applications

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Section: Discussion and Future Workmentioning

confidence: 99%

“…3 (a) is an automated process carried out by tools developed in [14] and [8], to isolate regions which exhibit certain geometric characteristics which lend themselves to specific meshing styles, namely thin-sheet (green), long-slender (blue) and residual (yellow) regions, Fig. 3 (b).…”

Section: Transferring Analysis Attributes Between Analysis Models At mentioning

confidence: 99%

Interface Management for Automating Finite Element Analysis Workflows

Tierney¹,

Nolan²,

Robinson³

et al. 2016

Computer-Aided Design and Applications

Self Cite

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“…For example, the presented multi-delity approach employed an identical mesh in both the WETTM and mechanical analysis, the mesh could be more eciently generated to reduce the degrees of freedom and dierent meshes could also be used by the dierent simulation delities to further reduce cost. The scheme of Makem et al [6], for example, could be employed in this workow to reduce the cost of the optimization to considerable eect.…”

Section: Discussionmentioning

confidence: 99%

“…In general, the cost of any nite element analysis (FEA) can be controlled through a reduction in the number of degrees of freedom of the mesh. The scheme of Makem et al [6], for example, has already been demonstrated to oer a considerable reduction in the number of degrees of freedom when meshing part of the presented test engine and could be employed along with the approaches discussed in the present paper to further reduce the cost of any SFC optimization.…”

Section: A Specic Fuel Consumption Optimizationmentioning

confidence: 98%

“…This is especially the case if the topology of the geometry changes. To maintain continuity, even in the face of such changes, a programmatic approach to the parameterization was adopted, with the presented test engine parameterization developed using the Siemens NX Open C application programming interface (API).The NX Open C API is a exible and powerful programming interface included within the Siemens NX CAD software package [43] which gives the user access to all of the software's capabilities and has been used in the past to create exible parametric geometry [14] and feature extraction systems [6,15,16].…”

Section: Whole Engine Parametrizationmentioning

confidence: 99%

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Multifidelity Multidisciplinary Whole-Engine Thermomechanical Design Optimization

Toal¹,

Keane²,

Benito³

et al. 2014

Journal of Propulsion and Power

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Traditionally the optimization of a turbomachinery engine casing for tip clearance has involved either 2D transient thermo-mechanical simulations or 3D mechanical simulations. The following paper illustrates that 3D transient whole engine thermomechanical simulations can be used within tip clearance optimizations and that the eciency of such optimizations can be improved when a multi-delity surrogate modeling approach is employed. These simulations are employed in conjunction with a rotor sub-optimization utilizing surrogate models of rotordynamics performance, stress,

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Automatic generation of multiblock decompositions of surfaces

Fogg¹,

Armstrong²,

Robinson³

2015

Numerical Meth Engineering

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SUMMARYMultiblock-structured meshes have significant advantages over fully unstructured meshes in numerical simulation but automatically generating these meshes is considerably more difficult. A method is described herein for automatically generating high-quality multiblock decompositions of surfaces with boundaries. Controllability and flexibility are useful capabilities of the method. Additional alignment constraints for forcing the appearance of particular features in the decomposition can be easily handled. Also, adjustments are made according to input metric tensor fields that describe target element size properties. The general solution strategy is based around using a four-way symmetry vector-field, called a cross-field, to describe the local mesh orientation on a triangulation of the surface. Initialisation is performed by propagating the boundary alignment constraints to the interior in a fast marching method. This is similar in a way to an advancing-front or paving method but much more straightforward and flexible because mesh connectivity does not have to be managed in the cross-field. Multiblock decompositions are generated by tracing the separatrices of the cross-field to partition the surface into quadrilateral blocks with square corners. The final task of meshing the decomposition requires solving an integer programming problem for block division numbers.

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Automatic decomposition and efficient semi-structured meshing of complex solids

Cited by 22 publications

References 16 publications

Interface Management for Automating Finite Element Analysis Workflows

Interface Management for Automating Finite Element Analysis Workflows

Multifidelity Multidisciplinary Whole-Engine Thermomechanical Design Optimization

Automatic generation of multiblock decompositions of surfaces

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