How to remove the influence of streaming in cosmic rays diffusion test.

[xhw589]

I want to make tests about cosmic rays diffusion and streaming separately, but when i set streaming velocity(pcr->v_adv(0,k,j,i)) 0, the consequence still has the influence of streaming. There shouldn't have a horizontal line.

[tomidakn]

@yanfeij Do you have any idea?

[yanfeij]

Sorry, I didn't notice this. The code has a flag for streaming: stream_flag = pin->GetOrAddInteger("cr", "vs_flag", 1); if you set vs_flag = 0, that should turn off streaming

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On Thu, Nov 6, 2025 at 5:04 AM Kengo TOMIDA ***@***.***> wrote: @yanfeij <https://github.com/yanfeij> Do you have any idea? — Reply to this email directly, view it on GitHub <#702 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACCWEJ4T62SGBY7OLQT3BQL33MMJVAVCNFSM6AAAAACKUOZ4NCVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTIOBZGAYDIMQ> . You are receiving this because you were mentioned.Message ID: ***@***.*** com>

-- Best, Yan-Fei Jiang Research Scientist, CCA, Flatiron Institute, 162 Fifth Avenue New York, NY 10010

[xhw589]

Thanks for your reply so much and it worked. But i have to set sigma=1000 to match the result when sigma=10 in the paper. I don't know why.

[yanfeij]

Probably some definition issue (for example, whether Vmax is included or not).

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On Mon, Nov 10, 2025 at 8:02 PM xhw589 ***@***.***> wrote: Thanks for your reply so much and it worked. But i have to set sigma=1000 to match the result when sigma=10 in the paper. I don't know why. — Reply to this email directly, view it on GitHub <#702 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACCWEJ6KJD5HBCWMGLOTBBT34EYUFAVCNFSM6AAAAACKUOZ4NCVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTIOJTGEZTINI> . You are receiving this because you were mentioned.Message ID: ***@***.*** com>

-- Best, Yan-Fei Jiang Research Scientist, CCA, Flatiron Institute, 162 Fifth Avenue New York, NY 10010

[xhw589]

Thanks for your help!