In this paper, a corrected particle method based on the smoothed particle hydrodynamics (SPH) method with high-order Taylor expansion (CSPH-HT) for solving the viscoelastic flow is proposed and investigated. The valid...In this paper, a corrected particle method based on the smoothed particle hydrodynamics (SPH) method with high-order Taylor expansion (CSPH-HT) for solving the viscoelastic flow is proposed and investigated. The validity and merits of the CSPH-HT method are first tested by solving the nonlinear high order Kuramoto-Sivishinsky equation and simulating the drop stretching, respectively. Then the flow behaviors behind two stationary tangential cylinders of polymer melt, which have been received little attention, are investigated by the CSPH-HT method. Finally, the CSPH-HT method is extended to the simulation of the filling process of the viscoelastic fluid. The numerical results show that the CSPH-HT method possesses higher accuracy and stability than other corrected SPH methods and is more reliable than other corrected SPH methods.展开更多
The effect of magnetic field on the growth behavior of compound layer was examined at the interface between the solid Cu and liquid AI during reactive diffusion. It was found that the thickness of compound layer was r...The effect of magnetic field on the growth behavior of compound layer was examined at the interface between the solid Cu and liquid AI during reactive diffusion. It was found that the thickness of compound layer was reduced by the high magnetic field. The growth activation energy in β, γ1 and ε2 layers under a high magnetic field was larger than those in non magnetic circumstances, the increment percentage being 4.8%, 13.3% and 5.5%, respectively.展开更多
基金support of the National Natural Science Foundation of China (Grants 11501495, 51541912, 51409227)the Natural Science Foundation of Jiangsu Province, China (Grants BK20130436, BK20150436)+1 种基金the Postdoctoral Science Foundation of China (Grants 2014M550310, 2015M581869, 2015T80589)the Natural Science Foundation of the Higher Education Institutions of Jiangsu Province (Grant 15KJB110025)
文摘In this paper, a corrected particle method based on the smoothed particle hydrodynamics (SPH) method with high-order Taylor expansion (CSPH-HT) for solving the viscoelastic flow is proposed and investigated. The validity and merits of the CSPH-HT method are first tested by solving the nonlinear high order Kuramoto-Sivishinsky equation and simulating the drop stretching, respectively. Then the flow behaviors behind two stationary tangential cylinders of polymer melt, which have been received little attention, are investigated by the CSPH-HT method. Finally, the CSPH-HT method is extended to the simulation of the filling process of the viscoelastic fluid. The numerical results show that the CSPH-HT method possesses higher accuracy and stability than other corrected SPH methods and is more reliable than other corrected SPH methods.
基金supported by the National Natural Science Foundation of China (No. 50871026)the 111 Project(B07015)+2 种基金Foundation for the Author of National Excellent Doctoral Dissertation of China (No. 200745)Program for New Century Excellent Talents in University (NCET-06-0288)the Fundamental Research Funds for the Central Universities (N090109001)
文摘The effect of magnetic field on the growth behavior of compound layer was examined at the interface between the solid Cu and liquid AI during reactive diffusion. It was found that the thickness of compound layer was reduced by the high magnetic field. The growth activation energy in β, γ1 and ε2 layers under a high magnetic field was larger than those in non magnetic circumstances, the increment percentage being 4.8%, 13.3% and 5.5%, respectively.
