TY - JOUR
T1 - A simple collision algorithm for arbitrarily shaped objects in particle-resolved flow simulation using an immersed boundary method
AU - Nagata, Takayuki
AU - Hosaka, Mamoru
AU - Takahashi, Shun
AU - Shimizu, Ken
AU - Fukuda, Kota
AU - Obayashi, Shigeru
N1 - Funding Information:
information Japan Society for the Promotion of Science, 16K18018; 18K03937The current computational resource was partially supported by the High Performance Computing Infrastructure (HPCI) hp160150 and hp170111, Joint Usage/Research Center for Interdisciplinary Large-scale Information Infrastructure (JHPCN) jh180051-NAJ, and as collaborative research with Tohoku University Institute of Fluid Science (Grant J17I023, J18L023, J19L026). The authors appreciate their assistance and helpful support. The present study was supported by JSPS KAKENHI Grant Numbers 16K18018 and 18K03937.
Publisher Copyright:
© 2020 The Authors. International Journal for Numerical Methods in Fluids published by John Wiley & Sons, Ltd.
PY - 2020/10/1
Y1 - 2020/10/1
N2 - In the present study, we proposed a simple collision algorithm, which can be handled arbitrarily shaped objects, for flow solvers using the immersed boundary method (IBM) based on the level set and ghost cell methods. The proposed algorithm can handle the collision of the arbitrarily shaped object with little additional computational costs for the collision calculation because collision detection and calculation are performed using the level set function and image point, which are incorporated into the original IBM solver. The proposed algorithm was implemented on the solid-liquid IBM flow solver and validated by simulations of the flow over an isolated cylinder and sphere. Also, grid and time step size sensitivity on the total energy conservation of objects were investigated in cylinder-cylinder, cylinder-red-blood-cells-shaped (RBC-shaped) objects, sphere-sphere, and sphere-flat plate interaction problems. Through validation, good agreement with previous studies, grid and time step size convergence, and sufficient total energy conservation were confirmed. As a demonstration, the drafting, kissing, and tumbling processes were computed, and it was confirmed that the present result by the proposed method is similar to the previous computations. In addition, particle-laden flow in a channel including obstacles with collision and adhesion phenomena and the interaction of cylinders and wavy-wall were computed. The results of these simulations reveal the capability of solving a flow containing arbitrarily shaped moving objects with collision phenomena by a simple proposed method.
AB - In the present study, we proposed a simple collision algorithm, which can be handled arbitrarily shaped objects, for flow solvers using the immersed boundary method (IBM) based on the level set and ghost cell methods. The proposed algorithm can handle the collision of the arbitrarily shaped object with little additional computational costs for the collision calculation because collision detection and calculation are performed using the level set function and image point, which are incorporated into the original IBM solver. The proposed algorithm was implemented on the solid-liquid IBM flow solver and validated by simulations of the flow over an isolated cylinder and sphere. Also, grid and time step size sensitivity on the total energy conservation of objects were investigated in cylinder-cylinder, cylinder-red-blood-cells-shaped (RBC-shaped) objects, sphere-sphere, and sphere-flat plate interaction problems. Through validation, good agreement with previous studies, grid and time step size convergence, and sufficient total energy conservation were confirmed. As a demonstration, the drafting, kissing, and tumbling processes were computed, and it was confirmed that the present result by the proposed method is similar to the previous computations. In addition, particle-laden flow in a channel including obstacles with collision and adhesion phenomena and the interaction of cylinders and wavy-wall were computed. The results of these simulations reveal the capability of solving a flow containing arbitrarily shaped moving objects with collision phenomena by a simple proposed method.
KW - Navier-Stokes
KW - arbitrarily shaped particle
KW - collision
KW - immersed boundary
KW - particle-laden flow
KW - particle-resolved simulation
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U2 - 10.1002/fld.4826
DO - 10.1002/fld.4826
M3 - Article
AN - SCOPUS:85081215332
VL - 92
SP - 1256
EP - 1273
JO - International Journal for Numerical Methods in Fluids
JF - International Journal for Numerical Methods in Fluids
SN - 0271-2091
IS - 10
ER -