干旱区生态环境知识资源中心(Arid): Sensitivity and stability analysis for groundwater numerical modeling: a field study of finite element application in the arid region

Arid

DOI	10.1007/s11600-022-00949-7
	Sensitivity and stability analysis for groundwater numerical modeling: a field study of finite element application in the arid region
	Jafarzadeh, Ahmad; Pourreza-Bilondi, Mohsen; Akbarpour, Abolfazl; Khashei-Siuki, Abbas; Azizi, Mohsen
通讯作者	Jafarzadeh, A
来源期刊	ACTA GEOPHYSICA
ISSN	1895-6572
EISSN	1895-7455
出版年	2023
卷号	71 期号:2 页码:1045-1062
英文摘要	This study intends to investigate the impacts of scheme type, time step, and error threshold on the stability of numerical simulation in the groundwater modeling. Hence, a two-dimensional finite element (FE) was implemented to simulate groundwater flow in a synthetic test case and a real-world study (Birjand aquifer). To verify the proposed model in both cases, the obtained results were compared with analytical solutions and observed values. The stability of numerical results was analyzed through different schemes and time-step sizes. Besides, the effect of the error threshold was examined by considering different threshold values. The results confirmed that the FE model has a good capacity to simulate groundwater fluctuations even for the real problem with more complexities. Examination of implicit outputs indicated that groundwater simulations based on this scheme have good accuracy, stability, and proper convergence in all time intervals. However, in the explicit and Crank-Nicolson schemes the time interval should be less than or equal to 0.001 and 0.1 day, respectively. Also, results reveal that for making stability in all schemes the value of the error threshold should not be more than 0.0001 m. Moreover, it derived that the boundary conditions of the aquifer influence the stability of numerical outputs. Finally, it was comprehended that as time interval and error threshold increases, the oscillation rate propagated.
英文关键词	Error threshold Iterative methods Open-source MATLAB framework Oscillation ratio Spatial correlation Stability and convergence analysis
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000879147800001
WOS关键词	FLOW ; SIMULATION ; TRANSPORT ; SYSTEM
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394951
推荐引用方式 GB/T 7714	Jafarzadeh, Ahmad,Pourreza-Bilondi, Mohsen,Akbarpour, Abolfazl,et al. Sensitivity and stability analysis for groundwater numerical modeling: a field study of finite element application in the arid region[J],2023,71(2):1045-1062.
APA	Jafarzadeh, Ahmad,Pourreza-Bilondi, Mohsen,Akbarpour, Abolfazl,Khashei-Siuki, Abbas,&Azizi, Mohsen.(2023).Sensitivity and stability analysis for groundwater numerical modeling: a field study of finite element application in the arid region.ACTA GEOPHYSICA,71(2),1045-1062.
MLA	Jafarzadeh, Ahmad,et al."Sensitivity and stability analysis for groundwater numerical modeling: a field study of finite element application in the arid region".ACTA GEOPHYSICA 71.2(2023):1045-1062.