TY - GEN
T1 - Seamless simulation from fluid flow to solidification using new Moving Particle Semi-implicit (MPS) method
AU - Hirata, Naoya
AU - Anzai, Koichi
PY - 2009/12/1
Y1 - 2009/12/1
N2 - In this study, a fluid flow and solidification simulation programs based on Moving Particle Semi-implicit (MPS) method, one of Lagrangian meshless method, were developed to achieve seamless simulation of casting processes. Multiple relaxations and biased velocity correction methods were proposed and introduced to a fluid flow simulation to suppress disordered movement and bounding behavior of particles caused by original MPS algorithm. The fluid flow simulation program was applied to the well-known benchmark lid-driven flow problems, and obtained results show that the proposed algorithms have high accuracy in spite of its low-resolution particle numbers. Heat transfer simulation program based on the MPS method was also developed, and interfacial heat resistance was considered in the program. The fluid flow and the solidification simulation programs were merged, and density change with temperature was introduced into the algorithm. Finally, casting process simulations from mold filling to solidification were carried out seamlessly with the proposed algorithms. As a result, generation of outer and inner shrinkage is shown, and predicted shapes of internal and external shrinkages agree well with experimental results.
AB - In this study, a fluid flow and solidification simulation programs based on Moving Particle Semi-implicit (MPS) method, one of Lagrangian meshless method, were developed to achieve seamless simulation of casting processes. Multiple relaxations and biased velocity correction methods were proposed and introduced to a fluid flow simulation to suppress disordered movement and bounding behavior of particles caused by original MPS algorithm. The fluid flow simulation program was applied to the well-known benchmark lid-driven flow problems, and obtained results show that the proposed algorithms have high accuracy in spite of its low-resolution particle numbers. Heat transfer simulation program based on the MPS method was also developed, and interfacial heat resistance was considered in the program. The fluid flow and the solidification simulation programs were merged, and density change with temperature was introduced into the algorithm. Finally, casting process simulations from mold filling to solidification were carried out seamlessly with the proposed algorithms. As a result, generation of outer and inner shrinkage is shown, and predicted shapes of internal and external shrinkages agree well with experimental results.
KW - Fluid flow
KW - Heat transfer
KW - Integrated simulation
KW - Mps method
KW - Particle method
KW - Solidification
UR - http://www.scopus.com/inward/record.url?scp=74249118104&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=74249118104&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:74249118104
SN - 9780873397421
T3 - Proceedings from the 12th International Conference on Modeling of Casting, Welding, and Advanced Solidification Processes
SP - 229
EP - 236
BT - Proceedings from the 12th International Conference on Modeling of Casting, Welding, and Advanced Solidification Processes
T2 - 12th International Conference on Modeling of Casting, Welding, and Advanced Solidification Processes
Y2 - 7 June 2009 through 14 June 2009
ER -