Default domain

jaho

Hello, I hope to get some advice regarding the following questions.

1) In CFX-pre, which domain should be the default domain between fluid domain and solid domain?

2) In CFX-pre, in case that I use the water from the fluid list under the basic settings of default domain's general options, where can I find an area for setting in which I can give the value of water's convective heat transfer coefficient to consider the water's convection? (Actually, in water's material properties offered by cfx's libray, I cannot find the water's heat transfer coefficient for convection...)

3) If the temperature of the subdomain(subarea) in the solid domain should be set at certain initial temperature value (just inital temperature, it is necessary to last), how can I give it? (I tried to set it through the intialisation of the solid domain but that initialisation is for giving the condition for all area of the solid domain instead of subdomain(or subarea)of the solid domain. I also tried to do it using the boudnary condition option for the subdomain but it allows just fixed temperature instead of initial temp. It means that that fixed temperature lasts over the time. However, I need to set the inital temp. at time=0 sec (not constantly lasted temp.))

Thank you so much in advance. Have a good day.