Computational instability of sedimentation-consolidation model based on an interaction coefficient: Fid-Bau Portal

Fachinformationsdienst BAUdigital

A platform for research: civil engineering, architecture and urbanism

Computational instability of sedimentation-consolidation model based on an interaction coefficient

Mou, Cong / Ding, Jianwen / Ying, Zi / Wang, Jianhua / Wan, Xing

Serious computational instability problems are usually encountered in solving the sedimentation-consolidation model based on an interaction coefficient (SCMIC). In this study, the computational instability behavior of SCMIC is investigated with given upwind finite difference scheme. Results show that significant numerical errors occur when low grid density is used. By analyzing the variations of governing equation coefficients with time, it is found that the computational instability is due to the highly nonlinear variation of $\frac{d σ^{'}}{d e}$ with $e$ ( $σ^{'}$ is effective stress and $e$ is void ratio), which causes significant errors in calculating the average value of $\frac{d σ^{'}}{d e} .$ By eliminating the effect of the high nonlinearity of $\frac{d σ^{'}}{d e},$ the computational instability of SCMIC can be completely resolved. Such a resolution method for the computational instability overcomes the restriction of grid density, which can facilitate the simulation of simultaneous sedimentation and consolidation in the geotechnical engineering field.

Access

Check availability in my library

Order at Subito €

Page navigation

Document information

Export, share and cite

Computational instability of sedimentation-consolidation model based on an interaction coefficient

Mou, Cong / Ding, Jianwen / Ying, Zi / Wang, Jianhua / Wan, Xing

Serious computational instability problems are usually encountered in solving the sedimentation-consolidation model based on an interaction coefficient (SCMIC). In this study, the computational instability behavior of SCMIC is investigated with given upwind finite difference scheme. Results show that significant numerical errors occur when low grid density is used. By analyzing the variations of governing equation coefficients with time, it is found that the computational instability is due to the highly nonlinear variation of $\frac{d σ^{'}}{d e}$ with $e$ ( $σ^{'}$ is effective stress and $e$ is void ratio), which causes significant errors in calculating the average value of $\frac{d σ^{'}}{d e} .$ By eliminating the effect of the high nonlinearity of $\frac{d σ^{'}}{d e},$ the computational instability of SCMIC can be completely resolved. Such a resolution method for the computational instability overcomes the restriction of grid density, which can facilitate the simulation of simultaneous sedimentation and consolidation in the geotechnical engineering field.

Computational instability of sedimentation-consolidation model based on an interaction coefficient

Mou, Cong / Ding, Jianwen / Ying, Zi / Wang, Jianhua / Wan, Xing

Serious computational instability problems are usually encountered in solving the sedimentation-consolidation model based on an interaction coefficient (SCMIC). In this study, the computational instability behavior of SCMIC is investigated with given upwind finite difference scheme. Results show that significant numerical errors occur when low grid density is used. By analyzing the variations of governing equation coefficients with time, it is found that the computational instability is due to the highly nonlinear variation of $\frac{d σ^{'}}{d e}$ with $e$ ( $σ^{'}$ is effective stress and $e$ is void ratio), which causes significant errors in calculating the average value of $\frac{d σ^{'}}{d e} .$ By eliminating the effect of the high nonlinearity of $\frac{d σ^{'}}{d e},$ the computational instability of SCMIC can be completely resolved. Such a resolution method for the computational instability overcomes the restriction of grid density, which can facilitate the simulation of simultaneous sedimentation and consolidation in the geotechnical engineering field.

Access

Check availability in my library

Order at Subito €

Page navigation

Document information

Export, share and cite

Document information

Title:

Computational instability of sedimentation-consolidation model based on an interaction coefficient

Contributors:

Mou, Cong (author) / Ding, Jianwen (author) / Ying, Zi (author) / Wang, Jianhua (author) / Wan, Xing (author)

Published in:

Marine Georesources & Geotechnology ; 42 ; 395-404

Publication date:

2024-04-02

Size:

10 pages

ISSN:

1064-119X , 1521-0618

DOI:

https://doi.org/10.1080/1064119X.2023.2191592

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

computational instability , consolidation , finite difference method , sedimentation , simulation

Similar titles

Sedimentation–consolidation modeling with an interaction coefficient

Jeeravipoolvarn, S. | Online Contents | 2009

Sedimentation–consolidation modeling with an interaction coefficient

Jeeravipoolvarn, S. / Chalaturnyk, R.J. / Scott, J.D. | Elsevier | 2008

Sedimentation–consolidation modeling with an interaction coefficient

Jeeravipoolvarn, S. | Online Contents | 2009

Sedimentation and consolidation of clays

Pane, Vicenzo | TIBKAT | 1986

Consolidation Coefficient

Verruijt, Arnold | Springer Verlag | 2017