pulsative and non newtonian
 

hey

two questions:

i have devleoped a NS equation code . i want to know

1.. how can i include the pulsative flow in my usual steady flow. do i have to do something in the initial conditions. if yes then wht.. any equation tht need to be put in there??

2.. which model should be used to model the non newtonian effect effectively.. and should it be done in the diffusion terms .. and how if any body has any idea?

regardsssss