hi all..I am new user of cfd-fluent...I am working on heat echanger model..where air as inlet alumenium as wall at higher temperature..my problem is, I assume that water drplets may form on fins(al). I want to model water(drops) zone on fins in gambit. I am using fluent 6.0 .Should i mesh the water droplets? what type of boundary condition should use? need of any continuum type to specify? thanks in advance

[abhinav prasoon]

can anyone help me in finding the bc for double pipe helical heat exchanger in which mass flow rate has been given for inner pipe and annulus pipe ,with inlet temp of cold fluid and inlet temp for hot fluid.