CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

The reaction rate for a wall surface reaction

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 22, 2023, 11:12
Default The reaction rate for a wall surface reaction
  #1
New Member
 
Stanlee
Join Date: Aug 2017
Location: New Zealand
Posts: 19
Rep Power: 8
stanlee8 is on a distinguished road
Hello Ansys experts,

I am modelling a wall surface reaction. Consider the chemical reaction ongoing on a surface is A (species in fluid) + B (site species) --> C (solid species);

If I understand correctly, Ansys Fluent computes the reaction rate by R=k*c(A)*c(B), where k is the reaction constant, c(A) is the molar concentration in fluid in the unit [kmol/m^3], and c(B) represents the site density in the unit [kmol/m^2]. Neither the backward reaction nor coverage dependence was considered in this context.

k and c(B) are both just inputs from me, and they are not changing throughout the simulation period if I understand correctly. Notice that the temperature exponent and activation energy for reactions are both zero in the current simulation.

My question is

how Ansys Fluent determines c(A). Is it the molar concentration at the cell adjacent to the reaction surface?
If my understanding above is correct?
Thank you and regards
stanlee8 is offline   Reply With Quote

Reply

Tags
chemical reaction, surface reaction rate

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
About the kinetic rate of surface reaction sjren_08 FLUENT 0 May 12, 2022 04:25
decomposePar problem: Cell 0contains face labels out of range vaina74 OpenFOAM Pre-Processing 37 July 20, 2020 05:38
Reaction Rate constant at the wall Diger FLUENT 0 December 29, 2016 16:18
Cluster ID's not contiguous in compute-nodes domain. ??? Shogan FLUENT 1 May 28, 2014 15:03
Multicomponent fluid Andrea CFX 2 October 11, 2004 05:12


All times are GMT -4. The time now is 22:42.