Adaptive mesh selection

Russell, R. D., and Christiansen, J., Adaptive mesh selection strategies for solving boundary value problems," SIAM J. Numer. Anal. 15(1), 59-80(1978). 

Several different methods may be used to generate and adaptive mesh. Saltzman (1) categorized them as follows i) fixed meshes, ii) selectively refined meshes, and iii) moving meshes. 

When appropriately processed geometry is available and the selection of element type and mesh density is ready, mesh generation can be done automatically, adaptively, manually, or by mixed application of these methods. Automatic local density definition is based on the curvature and proximity of geometric features. The engineer controls this process by specified values on points, curves or surfaces. 

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