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Helical tube in tube, heat exchanger

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Old   February 4, 2014, 07:03
Default Helical tube in tube, heat exchanger
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soby sunny
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I modelled a Helical tube in tube heat exchanger by sweeping, first i did the axis and then selected a plane parallel and opened sketcher and drew one circle dia 23mm and 12 mm that is the outer fluid, and then swept it and then 12mm and 10 mm the inner tube and swept it, and then 10mm pipe the inner fluid.
while the outerpipe is taken as wall .. So i get 3 pipes .. now

i need help in named selections, there is cold fluid in the outer and hot fluid in the inner, 2 inlets and 2 outlets,
i gave 2 inlets and 2 outlets and solid pipe, but wen i go to setup and click boundary conditions it automatically takes a lot of parts like interior part solid etc.
Can any1 help me to solve this??

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