This paper aims at developing a control volume staggered Lagrangian scheme in r–z coordinate that preserves symmetry property.To achieve this goal,the support operator method is first utilized to derive the compatibl...This paper aims at developing a control volume staggered Lagrangian scheme in r–z coordinate that preserves symmetry property.To achieve this goal,the support operator method is first utilized to derive the compatible discretization that satisfies the Geometrical Conservation Law(GCL)and momentum and total energy conservation property.We further introduce a method of source term treatment to recover the spherical symmetry of the current scheme.It is shown that the developed scheme has the benefit of maintaining the momentum and total energy conservation.The equi-angular grid,randomly distorted polar grid,and Cartesian grid are considered for one-dimensional spherical flow simulations.Also,an extension to the nonspherical flow is presented.The results confirm the good performance of the developed scheme.展开更多
A novel construction algorithm is presented to generate a conforming Voronoi mesh for any planar straight line graph (PSLG). It is also extended to tesselate multiple-intersected PSLGs. All the algorithms are guarante...A novel construction algorithm is presented to generate a conforming Voronoi mesh for any planar straight line graph (PSLG). It is also extended to tesselate multiple-intersected PSLGs. All the algorithms are guaranteed to converge. Examples are given to illustrate its efficiency.展开更多
A physically accurate and computationally effective pure finite element method （FEM） was developed to simulate the isothermal resin infusing process. The FEM was based on conservation of resin muss at and instant of...A physically accurate and computationally effective pure finite element method （FEM） was developed to simulate the isothermal resin infusing process. The FEM was based on conservation of resin muss at and instant of time and was objective of resin film infusion （RFI） fiber impregnation and mold filling . The developed computer code was able to simulate the resin infusing visually. A numerical example presented here demonstrated that compared with traditional finite element/ control-volume （FE/CV）, and FEM was physically accurate and computationally efficient.展开更多
基金supported by the National Natural Science Foundation of China(12201055).
文摘This paper aims at developing a control volume staggered Lagrangian scheme in r–z coordinate that preserves symmetry property.To achieve this goal,the support operator method is first utilized to derive the compatible discretization that satisfies the Geometrical Conservation Law(GCL)and momentum and total energy conservation property.We further introduce a method of source term treatment to recover the spherical symmetry of the current scheme.It is shown that the developed scheme has the benefit of maintaining the momentum and total energy conservation.The equi-angular grid,randomly distorted polar grid,and Cartesian grid are considered for one-dimensional spherical flow simulations.Also,an extension to the nonspherical flow is presented.The results confirm the good performance of the developed scheme.
基金Supported by the Science Technology Development Program of Beijing Municipal Education Commission (KM200510011004)
文摘A novel construction algorithm is presented to generate a conforming Voronoi mesh for any planar straight line graph (PSLG). It is also extended to tesselate multiple-intersected PSLGs. All the algorithms are guaranteed to converge. Examples are given to illustrate its efficiency.
基金Funded bythe National Natural Science Foundation of China(No50573060)
文摘A physically accurate and computationally effective pure finite element method （FEM） was developed to simulate the isothermal resin infusing process. The FEM was based on conservation of resin muss at and instant of time and was objective of resin film infusion （RFI） fiber impregnation and mold filling . The developed computer code was able to simulate the resin infusing visually. A numerical example presented here demonstrated that compared with traditional finite element/ control-volume （FE/CV）, and FEM was physically accurate and computationally efficient.
