Regarding Some Doubts

- February 5, 2024 at 4:34 pm
  
  Akash Shende
  Subscriber
  
  Hi,
  I am simulating Hypersonic Vehicle simulation in that my aim is to see how plasma sheath is generating near the Hypersonic vehicle, but now i am getting problem . I am not able to add the chemical reactions . i have seven species O2, N2, NO,O,N, NO+ & e-. Please help me regarding .
- February 6, 2024 at 12:06 pm
  
  SVV
  Ansys Employee
  
  Hi,
  
  You can use species transport model and a mixture as working fluid. The create the mixture with the species you are interested in. You can also define the reaction for these species if require. I am attaching a tutorial which covers how to set up a species model. Please go through section 15.5.5 in the tutorial below.
  Chapter 15: Modeling Species Transport and Gaseous Combustion (ansys.com)
- February 6, 2024 at 4:22 pm
  
  Akash Shende
  Subscriber
  
  Thank you sir,
  I will try like you said.
- February 10, 2024 at 10:39 am
  
  Akash Shende
  Subscriber
  
  Hi,
  i am facing issue while creating user defined function. i am not getting idea how to set, i tried but it is showing error. i am attaching image and equation please help me to write that equation.
  Equation is electron density(ne)= 6.02e23*Density*mass fraction of (e) / atomic mass of e
  e = electron
  i am assuming atomic mass of e = 5.48e-4
  I am getting erroe is like Expression does not evaluate to a single value