[hamed.majeed]

I am trying to work with DEFINE_LINEARIZED_MASS_TRANSFER UDF...and trying to understand the part where Fluent says that it couples the mass transfer to the flow transport equations. My questions are:

1. By flow transport equations fluent considered energy equation as well!
2. In the code the coupling is mentioned as:
C_STORAGE_C(c,mixture_thread,SV_MT_DS_DP)=ABS(r_rh o_lv*m_source/(dp))...what type of source term is that? What does this part of code means?
3. What is the variable SV_MT_DS_DP?

I will appreciate your responses. Thank you.