Title :
A Numerical Approach of Direct-SIMPLE Deduced Pressure Equations to Simulations of Transport Phenomena During Shaped Casting
Author :
Xu, Daming ; Ni, Jun
Author_Institution :
Sch. of Mater. Sci. & Eng., Harbin Inst. of Technol.
Abstract :
The properties of a LPAPI-matrix derived from an extended direct-SIMPLE scheme are demonstrated. It is shown that such LPAPI-matrix for a 3D strong P-V coupling problem is difficult to numerically solve by nature, though the direct-SIMPLE algorithm is theoretically efficient and computationally available for a 2D STP-based simulation. Convergent computation can not be achieved for an entire 3D solidification process using SOR, Jacobi and ICCG iterative methods to solve the 3D P-V coupling. This appeals some special solution techniques to the LPAPI-matrix for an efficient 3D STP-based simulation with an extended direct-SIMPLE algorithm
Keywords :
casting; iterative methods; solidification; transport processes; 2D solidification transport phenomena-based simulation; 3D solidification process; 3D strong P-V coupling problem; ICCG iterative method; Jacobi iterative method; LPAPI-matrix; SOR iterative method; direct-SIMPLE deduced pressure equations; extended direct-SIMPLE algorithm; liquid phase-fraction associated-pressure increment matrix; shaped casting; Casting; Cities and towns; Computational modeling; Fluid flow; Iterative algorithms; Iterative methods; Jacobian matrices; Materials science and technology; Navier-Stokes equations; Solid modeling;
Conference_Titel :
Computer and Computational Sciences, 2006. IMSCCS '06. First International Multi-Symposiums on
Conference_Location :
Hanzhou, Zhejiang
Print_ISBN :
0-7695-2581-4
DOI :
10.1109/IMSCCS.2006.162
