publication . Article . 2013

Grid deformation strategies for CFD analysis of screw compressors

Sham Rane; Ahmed Kovacevic; Nikola Stosic; Madhulika Kethidi;
Open Access
  • Published: 01 Nov 2013 Journal: International Journal of Refrigeration, volume 36, pages 1,883-1,893 (issn: 0140-7007, Copyright policy)
  • Publisher: Elsevier BV
  • Country: United Kingdom
Abstract
Customized grid generation of twin screw machines for CFD analysis is widely used by the refrigeration and air-conditioning industry today, but is currently not suitable for topologies such as those of single screw, variable pitch or tri screw rotors. This paper investigates a technique called key-frame re-meshing that supplies pre-generated unstructured grids to the CFD solver at different time steps. To evaluate its accuracy, the results of an isentropic compression-expansion process in a reciprocating piston cylinder arrangement have been compared. Three strategies of grid deformation; diffusion equation mesh smoothing, user defined nodal displacement and key...
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ACM Computing Classification System: ComputingMethodologies_COMPUTERGRAPHICS
free text keywords: Mechanical Engineering, Building and Construction, TA, Gas compressor, Smoothing, Computational fluid dynamics, business.industry, business, Diffusion equation, Computer science, Solver, Polygon mesh, Reciprocating motion, Mesh generation
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