Optimizing conformality of NURBS surfaces by general bilinear transformations

2015 ◽  
Vol 63 ◽  
pp. 12-25 ◽  
Author(s):  
Yi-Jun Yang ◽  
Wei Zeng ◽  
Tian-Qi Song
Keyword(s):  
Nurbs Surfaces

Computation of the RCS of complex bodies modeled using NURBS surfaces

1995 ◽  
Vol 37 (6) ◽  
pp. 36-47 ◽  
Author(s):  
M. Domingo ◽  
F. Rivas ◽  
J. Perez ◽  
R.P. Torres ◽  
M.F. Catedra
Keyword(s):  
Nurbs Surfaces

Practical Ray Tracing of Trimmed NURBS Surfaces

2000 ◽  
Vol 5 (1) ◽  
pp. 27-52 ◽  
Author(s):  
William Martin ◽  
Elaine Cohen ◽  
Russell Fish ◽  
Peter Shirley
Keyword(s):  
Ray Tracing ◽  
Nurbs Surfaces

Dynamic highlight line generation for locally deforming NURBS surfaces

2003 ◽  
Vol 35 (10) ◽  
pp. 881-892 ◽  
Author(s):  
Jun-Hai Yong ◽  
Fuhua (Frank) Cheng ◽  
Yifan Chen ◽  
Paul Stewart ◽  
Kenjiro T. Miura
Keyword(s):  
Nurbs Surfaces ◽  
Line Generation

scholarly journals Radiation heat transfer model using Monte Carlo ray tracing method on hierarchical ortho-Cartesian meshes and non-uniform rational basis spline surfaces for description of boundaries

2014 ◽  
Vol 35 (2) ◽  
pp. 65-92 ◽  
Author(s):  
Paweł Kuczyński ◽  
Ryszard Białecki
Keyword(s):  
Heat Transfer ◽  
Ray Tracing ◽  
Radiation Heat Transfer ◽  
Transfer Model ◽  
Rational Basis ◽  
Radiation Heat ◽  
Cartesian Meshes ◽  
Spline Surfaces ◽  
Nurbs Surfaces ◽  
Transfer Problems

Abstract The paper deals with a solution of radiation heat transfer problems in enclosures filled with nonparticipating medium using ray tracing on hierarchical ortho-Cartesian meshes. The idea behind the approach is that radiative heat transfer problems can be solved on much coarser grids than their counterparts from computational fluid dynamics (CFD). The resulting code is designed as an add-on to OpenFOAM, an open-source CFD program. Ortho-Cartesian mesh involving boundary elements is created based upon CFD mesh. Parametric non-uniform rational basis spline (NURBS) surfaces are used to define boundaries of the enclosure, allowing for dealing with domains of complex shapes. Algorithm for determining random, uniformly distributed locations of rays leaving NURBS surfaces is described. The paper presents results of test cases assuming gray diffusive walls. In the current version of the model the radiation is not absorbed within gases. However, the ultimate aim of the work is to upgrade the functionality of the model, to problems in absorbing, emitting and scattering medium projecting iteratively the results of radiative analysis on CFD mesh and CFD solution on radiative mesh.

UTD computation for NURBS surfaces

2012 ◽  
Author(s):  
Manushanker Balasubramanian ◽  
Alberto Toccafondi ◽  
Stefano Maci
Keyword(s):  
Nurbs Surfaces
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