The asymptotic lattices and their transformations are included into the theory of quadrilateral lattices.

The optimal shape of a two dimensional turbulator above an isothermal flat plate is found by using numerical simulation. The turbulent boundary layer over the flat plate was disrupted at various situations by inserting a quadrilateral bar where the boundary layer thickness kept more than three times greater than the insert\'s height. As a result, the overall heat transfer coefficient of the wal...

We prove 13 necessary and sufficient conditions for a tangential quadrilateral to be a kite.

The aim of this study was to analyze the difficulties teachers and students in teaching learning material on properties quadrilateral. Based these researcher designed activities based Kata Sepat which would be used help understand quadrilaterals. research method is descriptive qualitative method. instruments were interviews observations. results showed that experienced quadrilateral characteris...

We prove five necessary and sufficient conditions for a convex quadrilateral to have an incircle that concerns angles or circles.

Abstract Automatic quadrilateral (quad) or hexahedral (hex) multiblock decomposition has been a topic of research for many years. The key challenges are to automatically determine where place mesh singularities and how generate based on the get desired orientation distribution. In this work, new idea achieving these is proposed an auxiliary subdivision domain into smaller subdomains, followed b...

The problem of mesh matching is addressed in this work. For a given n-sided planar region bounded by one loop of n polylines we are selecting optimal quadrilateral mesh from existing catalogue of meshes. The formulation of matching between planar shape and quadrilateral mesh from the catalogue is based on the problem of finding longest common subsequence (LCS). Theoretical foundation of mesh ma...