
Results in Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 104980 - 104980
Published: April 1, 2025
Language: Английский
Results in Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 104980 - 104980
Published: April 1, 2025
Language: Английский
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
1Materials, Journal Year: 2025, Volume and Issue: 18(5), P. 1109 - 1109
Published: Feb. 28, 2025
The size effect in rock mechanics has long been a challenging issue, with the length-to-diameter (L/D) ratio emerging as critical factor that received substantial attention. Understanding L/D is essential for ensuring accuracy and reliability of laboratory tests. This paper presents comprehensive review studies on rocks, examining its influence static dynamic mechanical behavior. analysis encompasses effects specimen properties, energy characteristics, failure modes, integrating findings from theoretical research experimental studies. results reveal varies significantly under different external loading conditions. Despite extensive research, mechanisms underlying remain ambiguous, unified conclusion yet to be reached. highlights importance selecting appropriate dimensions tests emphasizes need further investigation into advance understanding mechanics.
Language: Английский
Citations
0Stochastic Environmental Research and Risk Assessment, Journal Year: 2025, Volume and Issue: unknown
Published: April 11, 2025
Language: Английский
Citations
0Frontiers of Structural and Civil Engineering, Journal Year: 2025, Volume and Issue: unknown
Published: April 24, 2025
Language: Английский
Citations
0Results in Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 104980 - 104980
Published: April 1, 2025
Language: Английский
Citations
0