[MITgcm-support] 回复： Re: Calculation overflow problem (Haoran Xu)

[Haoran Xu]

Thanks for your reply.Actually I increased ViscAh from 0.1 to 0.5 before sending my email.But it not solve the problem.And I have to consider calculating costs of the supercomputer, so I may not reduce the time step anymore.Also I think 10s is enough for a 500m resolution model.

Haoran



---- 回复的原邮件 ----
| 发件人 | e.gavilan at hhu.edu.cn |
| 日期 | 2023年11月01日 21:43 |
| 收件人 | mitgcm-support at mitgcm.org |
| 抄送至 | |
| 主题 | [MITgcm-support]  Re: Calculation overflow problem (Haoran Xu) |
Did you try to decrease the time step or increse the horizontal viscosity?





Sent from my phone


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Date: Wed, Nov 1, 2023, 20:09
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Today's Topics:

   1. Calculation overflow problem (Haoran Xu)


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Message: 1
Date: Wed, 1 Nov 2023 20:09:25 +0800 (CST)
From: "Haoran Xu" <xu1jian2wei3 at 163.com>
To: MITgcm-support <mitgcm-support at mitgcm.org>
Subject: [MITgcm-support] Calculation overflow problem
Message-ID: <39711cf3.26d.18b8ac9d5aa.Coremail.xu1jian2wei3 at 163.com>
Content-Type: text/plain; charset="gbk"

Dear  MITgcm community,

I am running a model in Luzon strait with open boundary condition t,s,u,v. The model resolution is 500m.The calculation stopped due to overflow.I found the velocity increased in one area (image attached,velocity at level 78).I've tried smoothing the topography in this area(image attached),but it did not help much(overflow only delayed).I want to know if  my configuration is properly(file attached).Or there is anything I can try to deal with this problem?


Any suggestions would be helpful. Thanks in advance.
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