Why is there such a large fluctuation in pore water pressure

[wchrong]

When simulating landslides caused by rainfall infiltration, why does the pore water pressure change so dramatically without setting an initial groundwater level line? When setting a groundwater level line, why does the pore water pressure decrease linearly in the first stage? Do you know, can you tell me the reason? Thank you very much.

[murphy-john]

Large fluctuations in pressures and stresses is a common issue with dynamic explicit MPM code. It's caused by many things notably cell crossing errors.

[wchrong]

Thank you very much for your answer. Can you tell me some methods to reduce fluctuations? The changes in pore water pressure during the simulation process do not match what I measured. The simulated graph fluctuates too violently and there is no clear pattern. 苣漓 ***@***.***  

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------------------ 原始邮件 ------------------ 发件人: "Anura3D/Anura3D_OpenSource" ***@***.***>; 发送时间: 2023年12月14日(星期四) 凌晨0:05 ***@***.***>; ***@***.******@***.***>; 主题: Re: [Anura3D/Anura3D_OpenSource] Why is there such a large fluctuation in pore water pressure (Discussion #168) Large fluctuations in pressures and stresses is a common issue with dynamic explicit MPM code. It's caused by many things notably cell crossing errors. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>