An Overset Adaptive Cartesian/Prism Grid Method for Moving Boundary Flow Problems

2005 ◽  
Author(s):  
Z.J. Wang ◽  
Ravishekar Kannan
Keyword(s):  
Moving Boundary ◽  
Grid Method ◽  
Boundary Flow ◽  
Flow Problems

Overset Adaptive Cartesian/Prism Grid Method for Stationary and Moving-Boundary Flow Problems

AIAA Journal ◽  
2007 ◽  
Vol 45 (7) ◽  
pp. 1774-1779 ◽  
Author(s):  
Ravishekar Kannan ◽  
Z. J. Wang
Keyword(s):  
Moving Boundary ◽  
Grid Method ◽  
Boundary Flow ◽  
Flow Problems

Application of hybrid Cartesian grid and gridless approach to moving boundary flow problems

2013 ◽  
Vol 72 (9) ◽  
pp. 994-1013 ◽  
Author(s):  
Xiao Wei Cai ◽  
Jun Jie Tan ◽  
Xin Jian Ma ◽  
Min Zhang ◽  
Hua Sheng Wang
Keyword(s):  
Moving Boundary ◽  
Cartesian Grid ◽  
Boundary Flow ◽  
Flow Problems

Numerical Solution of a Nonlinear Diffusion Model for Soybean Hydration with Moving Boundary

2015 ◽  
Vol 11 (5) ◽  
pp. 587-595 ◽  
Author(s):  
Douglas J. Nicolin ◽  
Gisleine E. C. da Silva ◽  
Regina Maria M. Jorge ◽  
Luiz Mario M. Jorge
Keyword(s):  
Differential Equation ◽  
Diffusion Model ◽  
Nonlinear Diffusion ◽  
Numerical Scheme ◽  
Moving Boundary ◽  
Grid Method ◽  
Variable Diffusivity ◽  
Variable Space ◽  
Diffusive Fluxes ◽  
Moisture Profiles

Abstract Variable diffusivity and volume of the grains are taken into account in the diffusion model that describes mass transfer in soybean hydration. The variable space grid method (VSGM) was used to consider the increase in grain size, and the diffusivity was considered an exponential function of the moisture content. An equation for the behavior of the grain radius as a function of time was obtained by global mass balance over the soybean grain and the differential equation considered that the increase in radius happens due to the influence of the convective and diffusive fluxes at the surface of the grains. The model was solved by an explicit numerical scheme which presented satisfactory results. The results showed the behavior of moisture profiles obtained as a function of time and radial position and also showed how the grain radius increased with time and changed the solution domain of the diffusion equation.

Solving moving boundary problems with an adaptive moving grid method

1998 ◽  
Vol 53 (19) ◽  
pp. 3393-3411 ◽  
Author(s):  
Jörg Frauhammer ◽  
Harald Klein ◽  
Gerhart Eigenberger ◽  
Ulrich Nowak
Keyword(s):  
Moving Boundary ◽  
Grid Method ◽  
Moving Boundary Problems ◽  
Moving Grid ◽  
Boundary Problems

Computation of Multi-Passage Cascade Flows With Overset and Deforming Grids

1997 ◽  
Author(s):  
Ismail H. Tuncer ◽  
Wolfgang Sanz
Keyword(s):  
Moving Boundary ◽  
Grid Method ◽  
Navier Stokes ◽  
Computational Results ◽  
Compressor Cascade ◽  
Overset Grid ◽  
Overset Grids ◽  
Overset Grid Method ◽  
Background Grid ◽  
Good Agreement

An overset grid method is applied to the solution of single and multi-passage cascade flows with a compressible Navier-Stokes solver. C-type grids around individual blades are overset onto a Cartesian background grid. Overset grids are allowed to move in time relative to each other as prescribed by the oscillatory plunging motion. The overset grid method uses a simple, robust numerical algorithm to localize moving boundary points and to interpolate solution variables across intergrid boundaries. Computational results and comparisons with single/staggered, deforming grid solutions are presented for in- and out-of-phase multi-passage flows through a compressor cascade. Very good agreement is obtained against the deforming grid solutions.

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