TY - JOUR
T1 - Numerical simulation of debris-flow behavior based on the SPH method incorporating the Herschel-Bulkley-Papanastasiou rheology model
AU - Han, Zheng
AU - Su, Bin
AU - Li, Yange
AU - Wang, Wei
AU - Wang, Weidong
AU - Huang, Jianling
AU - Chen, Guangqi
N1 - Funding Information:
This study was financially supported by the National Key R&D Program of China (Grant No. 2018YFC1505401); the National Natural Science Foundation of China (Grant No. 41702310); the Natural Science Foundation of Hunan (Grant No. 2018JJ3644); the Innovation-Driven Project of Central South University (Grant No. 2019CX011); and the Fundamental Research Funds for the Central Universities of Central South University (Grant No. 2018zzts652). These financial supports are gratefully acknowledged. We would like to thank the developer team of the DualSPHysics, who developed the open-source SPH code and released it to the public. We also extend our gratitude to editor-in-chief and two reviewers for their insightful comments.
Funding Information:
This study was financially supported by the National Key R&D Program of China (Grant No. 2018YFC1505401 ); the National Natural Science Foundation of China (Grant No. 41702310 ); the Natural Science Foundation of Hunan (Grant No. 2018JJ3644 ); the Innovation-Driven Project of Central South University (Grant No. 2019CX011 ); and the Fundamental Research Funds for the Central Universities of Central South University (Grant No. 2018zzts652 ). These financial supports are gratefully acknowledged. We would like to thank the developer team of the DualSPHysics, who developed the open-source SPH code and released it to the public. We also extend our gratitude to editor-in-chief and two reviewers for their insightful comments.
PY - 2019/5/18
Y1 - 2019/5/18
N2 - A rational rheology model is critical for the numerical simulation of debris-flow behavior. The Bingham model commonly used in many current studies has failed to simulate the shear thickening and thinning phenomenon in experiments. We report an alternative solution by incorporating the Herschel-Bulkley-Papanastasiou (HBP) model with the smoothed particle hydrodynamic (SPH) method. The SPH simulation is based on the open-source DualSPHysics scheme, upon which we built a development by the Bingham-based rheology model in our previous study. In this paper, a straightforward improvement is made such that the HBP model is incorporated to describe the constitutive law between particles, extending the compatibility of the simulation to dilatant and pseudoplastic fluids. To illustrate the performance of the HBP-based SPH method, first, a sensitivity analysis was performed to investigate the influence of important rheological coefficients. The proposed method was then verified by a dam-break experiment of water-clay mixtures and the case study of the 2010 Yohutagawa debris-flow event in Japan. The results indicate a good accordance between simulation and observation. A discussion regarding the potential and limitations of the current method concludes the paper.
AB - A rational rheology model is critical for the numerical simulation of debris-flow behavior. The Bingham model commonly used in many current studies has failed to simulate the shear thickening and thinning phenomenon in experiments. We report an alternative solution by incorporating the Herschel-Bulkley-Papanastasiou (HBP) model with the smoothed particle hydrodynamic (SPH) method. The SPH simulation is based on the open-source DualSPHysics scheme, upon which we built a development by the Bingham-based rheology model in our previous study. In this paper, a straightforward improvement is made such that the HBP model is incorporated to describe the constitutive law between particles, extending the compatibility of the simulation to dilatant and pseudoplastic fluids. To illustrate the performance of the HBP-based SPH method, first, a sensitivity analysis was performed to investigate the influence of important rheological coefficients. The proposed method was then verified by a dam-break experiment of water-clay mixtures and the case study of the 2010 Yohutagawa debris-flow event in Japan. The results indicate a good accordance between simulation and observation. A discussion regarding the potential and limitations of the current method concludes the paper.
UR - http://www.scopus.com/inward/record.url?scp=85064685307&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85064685307&partnerID=8YFLogxK
U2 - 10.1016/j.enggeo.2019.04.013
DO - 10.1016/j.enggeo.2019.04.013
M3 - Article
AN - SCOPUS:85064685307
SN - 0013-7952
VL - 255
SP - 26
EP - 36
JO - Engineering Geology
JF - Engineering Geology
ER -