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February 9, 2011, 01:02 |
boundary conditions
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#1 |
New Member
sudhir
Join Date: Feb 2011
Posts: 4
Rep Power: 15 |
hi ,
i am doing analysis for steam turbine...so my inputs are inlet pressure-125ata(12258310 pascals) inlet temp -783K inlet flow is 140 tonn/hr now can any one tell me tht which type of boundary condition i have to choose... coz i have pressure,temp and flow rate....so if i choose mass_inlet as my boundary type then where i have to give the inlet pressure...shall i give my inlet pressure in operating conditions...can any one suggest me reg this.... |
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February 10, 2011, 02:06 |
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#2 |
New Member
sudhir
Join Date: Feb 2011
Posts: 4
Rep Power: 15 |
hi,
can anyone take some effort to reply my query....thanks in advance.... |
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February 10, 2011, 07:30 |
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#3 |
Senior Member
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Hi Sudhir,
your problem is closed in incompressible region but in steam turbines compressibility effect is considerable! So you need to know the pressure where outflow exposed to. e.g. consider a converge-diverge nozzle where mass flow rate and inlet pressure are known, by changing outlet pressure you will get different flow fields. therefore I think in compressible region your problem is not closed. |
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February 13, 2011, 11:35 |
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#4 |
New Member
sudhir
Join Date: Feb 2011
Posts: 4
Rep Power: 15 |
Thanks amir...will try and let u know the result..
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