variant of Tutorial15

jemteo

Hi,

i will like to run tutorial 15 using a non-newtonian fluid instead of water. i would like to ask a few questions.

(1) my fluid changes viscosity with time, do i use a transient or steadystate setup? i notice that under steadystate, i can specificy physical timescale. does this timescale affect my viscosity? (viscosity is keyed in as an expression by myself)

(2) i tried using transient, but when running errors surfaced, stating that in transient simulations initialisation value cannot be left blank. i.e. i cannot use AUTOMATIC but have to use AUTOMATIC WITH VALUE. what are the initial values i should key in pertaining to tutorial 15?

txs in advance