SURFACE OXIDATION MODEL FOR CHAR OXIDATION

[shanmugasundaram2706]

Hai Developers,
Could you please clarify about the calculation of the char oxidation rate if the "SURFACE OXIDATION MODEL" is kept "FALSE"?
How will the FDS calculate oxygen mass fraction at the fuel surface?

Thanks in advance,

Regards,
Shanmugasundaram D

[ericvmueller]

This is an area of active development, but currently the approach is described by equations 9.2 and 9.3 of the User's Guide. The oxygen volume fraction in the gas phase cell is used at the solid surface, and it is assumed to decay in depth inside the solid based on the GAS_DIFFUSION_DEPTH.

[shanmugasundaram2706]

Dear Eric Mueller, Thanks for your reply and this is very helpful. Regards, Shanmugasundaram D

…

On Tue, Jul 2, 2024 at 3:07 PM Eric Mueller ***@***.***> wrote: This is an area of active development, but currently the approach is described by equations 9.2 and 9.3 of the User's Guide. The oxygen volume fraction in the gas phase cell is used at the solid surface, and it is assumed to decay in depth inside the solid based on the GAS_DIFFUSION_DEPTH. — Reply to this email directly, view it on GitHub <#13115 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AM7K4W3R52553BGWS7DGRH3ZKL3AXAVCNFSM6AAAAABKIDJURGVHI2DSMVQWIX3LMV43SRDJONRXK43TNFXW4Q3PNVWWK3TUHM4TSNBQGM4TO> . You are receiving this because you authored the thread.Message ID: ***@***.***>