discontinuous results when using ariable polynomial order
******************* This email originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list https://spam.ic.ac.uk/SpamConsole/Senders.aspx to disable email stamping for this address. ******************* Dear Prof. Sherwin Thanks for your reply. There is a problem is when I use variable polynomial order in the field, the results near the boundary between 2 domains with different polynomial order cant be smoothed by C0projection module. So how can I handle the discontinuous results in this case? Many thanks, Zhaoyu Wang Shanghai Jiao Tong University
Hi Zhaoyu, I am not sure what to suggest in this case. The techniques should also work in this case but I doubt they have been full tested in this scenario. Have you tried using both the localtoglobal approach and the standard mass matrix inverse and both do not work? Cheers, Spencer. Spencer Sherwin FREng, FRAeS Head of Aerodynamics Section, Director of Research Computing Service, Professor of Computational Fluid Mechanics, Department of Aeronautics, South Kensington Campus, Imperial College London, SW7 2AZ, UK Phone: +44 (0)20 7594 5052 http://www.imperial.ac.uk/people/s.sherwin/ On 12 Oct 2020, at 06:41, 王昭予 <clemden@sjtu.edu.cn<mailto:clemden@sjtu.edu.cn>> wrote: Dear Prof. Sherwin Thanks for your reply. There is a problem is when I use variable polynomial order in the field, the results near the boundary between 2 domains with different polynomial order cant be smoothed by C0projection module. So how can I handle the discontinuous results in this case? Many thanks, Zhaoyu Wang Shanghai Jiao Tong University
******************* This email originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list https://spam.ic.ac.uk/SpamConsole/Senders.aspx to disable email stamping for this address. ******************* Dear Prof. Sherwin Yes, I have tried using both the localtoglobal approach and the standard mass matrix inverse and both dont work. If I interpolate one field with variable polynomial order to a field with identical polynomial order, will it be an alternative choice? Many thanks, Zhaoyu Wang Shanghai Jiao Tong University ----- 原始邮件 ----- 发件人: "Spencer J Sherwin" <s.sherwin@imperial.ac.uk> 收件人: "王昭予" <clemden@sjtu.edu.cn> 抄送: "nektar-users" <nektar-users@imperial.ac.uk> 发送时间: 星期二, 2020年 10 月 13日 下午 3:54:32 主题: Re: discontinuous results when using ariable polynomial order Hi Zhaoyu, I am not sure what to suggest in this case. The techniques should also work in this case but I doubt they have been full tested in this scenario. Have you tried using both the localtoglobal approach and the standard mass matrix inverse and both do not work? Cheers, Spencer. Spencer Sherwin FREng, FRAeS Head of Aerodynamics Section, Director of Research Computing Service, Professor of Computational Fluid Mechanics, Department of Aeronautics, South Kensington Campus, Imperial College London, SW7 2AZ, UK Phone: +44 (0)20 7594 5052 http://www.imperial.ac.uk/people/s.sherwin/ On 12 Oct 2020, at 06:41, 王昭予 <clemden@sjtu.edu.cn<mailto:clemden@sjtu.edu.cn>> wrote: Dear Prof. Sherwin Thanks for your reply. There is a problem is when I use variable polynomial order in the field, the results near the boundary between 2 domains with different polynomial order cant be smoothed by C0projection module. So how can I handle the discontinuous results in this case? Many thanks, Zhaoyu Wang Shanghai Jiao Tong University
HI Zhaoyu, Sorry this is a busy lecturing time for me so I have not been able to look for this. Could I ask you to ensure there is an issue on the gitlab.nektar.info<http://gitlab.nektar.info> page so that when we get to this list we can see if we can sort out a fix. Thanks, Spencer. Spencer Sherwin FREng, FRAeS Head of Aerodynamics Section, Director of Research Computing Service, Professor of Computational Fluid Mechanics, Department of Aeronautics, South Kensington Campus, Imperial College London, SW7 2AZ, UK Phone: +44 (0)20 7594 5052 http://www.imperial.ac.uk/people/s.sherwin/ On 16 Oct 2020, at 05:18, 王昭予 <clemden@sjtu.edu.cn<mailto:clemden@sjtu.edu.cn>> wrote: Dear Prof. Sherwin Yes, I have tried using both the localtoglobal approach and the standard mass matrix inverse and both dont work. If I interpolate one field with variable polynomial order to a field with identical polynomial order, will it be an alternative choice? Many thanks, Zhaoyu Wang Shanghai Jiao Tong University ----- 原始邮件 ----- 发件人: "Spencer J Sherwin" <s.sherwin@imperial.ac.uk<mailto:s.sherwin@imperial.ac.uk>> 收件人: "王昭予" <clemden@sjtu.edu.cn<mailto:clemden@sjtu.edu.cn>> 抄送: "nektar-users" <nektar-users@imperial.ac.uk<mailto:nektar-users@imperial.ac.uk>> 发送时间: 星期二, 2020年 10 月 13日 下午 3:54:32 主题: Re: discontinuous results when using ariable polynomial order Hi Zhaoyu, I am not sure what to suggest in this case. The techniques should also work in this case but I doubt they have been full tested in this scenario. Have you tried using both the localtoglobal approach and the standard mass matrix inverse and both do not work? Cheers, Spencer. Spencer Sherwin FREng, FRAeS Head of Aerodynamics Section, Director of Research Computing Service, Professor of Computational Fluid Mechanics, Department of Aeronautics, South Kensington Campus, Imperial College London, SW7 2AZ, UK Phone: +44 (0)20 7594 5052 http://www.imperial.ac.uk/people/s.sherwin/ On 12 Oct 2020, at 06:41, 王昭予 <clemden@sjtu.edu.cn<mailto:clemden@sjtu.edu.cn><mailto:clemden@sjtu.edu.cn>> wrote: Dear Prof. Sherwin Thanks for your reply. There is a problem is when I use variable polynomial order in the field, the results near the boundary between 2 domains with different polynomial order cant be smoothed by C0projection module. So how can I handle the discontinuous results in this case? Many thanks, Zhaoyu Wang Shanghai Jiao Tong University
participants (2)
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Sherwin, Spencer J
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王昭予