Deciphering the dynamics of debris flows through basal stress responses in model experiments DOI
Cong-jiang Li,

Yu-xiang Hu,

Haibo Li

et al.

Acta Geotechnica, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 24, 2024

Language: Английский

Modified Herschel–Bulkley–Papanastasiou model considering particle size distribution to debris flow rheological properties DOI
Tianxing Ma, Rui Luo, Liangxu Shen

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(2)

Published: Feb. 1, 2025

Debris flow, a typical non-Newtonian fluid, exhibits rheological behavior significantly influenced by particle size distribution. Traditional models often struggle with applicability and predictive accuracy in complex systems. This study proposes modified Herschel–Bulkley–Papanastasiou (HBP) model, incorporating distribution parameters to dynamically adjust yield stress shear viscosity, enhancing its describing debris flow under varying gradations. The model distinguishes the roles of fine coarse particles: particles reduce resistance through lubrication effects, while enhance viscosity via interlocking effects. To validate series experiments were conducted on 14 gradation conditions. Results showed HBP achieved fitting coefficients between 0.933 0.990, outperforming traditional demonstrating superior adaptability across different distributions. was further integrated into OpenFOAM framework for three-dimensional simulations flume experiment. These considered wall friction dynamic free surface changes. Comparative analysis physical revealed accurately captured behavior, dynamics, pressure field distributions channel bed In summary, overcomes limitations parameters, offering more precise versatile rheology. work provides robust theoretical numerical tool advancing prediction mitigation engineering applications.

Language: Английский

Citations

1
Topography-based and vectorized algorithm for extracting physical quantities in 3D-SPH form and its application in debris-flow entrainment modeling DOI
Bin Su, Yange Li, Zheng Han

et al.

Engineering Geology, Journal Year: 2024, Volume and Issue: 340, P. 107693 - 107693

Published: Aug. 22, 2024

Language: Английский

Citations

6
A discharge regulating method for the whole process of the debris flow dam failure DOI
Hechun Ruan, Huayong Chen, Xiaoqing Chen

et al.

Landslides, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 11, 2025

Language: Английский

Citations

0
A new rainfall Intensity − Duration threshold curve for debris flows using comprehensive rainfall intensity DOI
Yan Zhao, Yajun Li,

Jiaoyu Zheng

et al.

Engineering Geology, Journal Year: 2025, Volume and Issue: unknown, P. 107949 - 107949

Published: Feb. 1, 2025

Language: Английский

Citations

0
Numerical Investigation of Rockfall and Cascading Debris Flow Disasters Caused by Extreme Rainfall: A Case Study of Huashan Mountain in Jinan, China DOI
Tao Kong,

Guangyu Shao,

Longfei Lu

et al.

Indian geotechnical journal, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

Language: Английский

Citations

0
Effects of bed pumice content on lahar erosion: An example from Changbaishan volcano, China DOI
Shengwu Qin,

Jiangfeng Lv,

Shuangshuang Qiao

et al.

Engineering Geology, Journal Year: 2024, Volume and Issue: 336, P. 107560 - 107560

Published: May 19, 2024

Language: Английский

Citations

2
Deciphering the dynamics of debris flows through basal stress responses in model experiments DOI
Cong-jiang Li,

Yu-xiang Hu,

Haibo Li

et al.

Acta Geotechnica, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 24, 2024

Language: Английский

Citations

0