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ELANCHEZIYAN February 2, 2013 02:47

incompressible floe
 
hi,
i am doing my performance study on aircraft oil filter. the study on the pressure drop conditions across the filter. the are 8 inlets and one outlet. its a circumferencial inlet towards axis (out to in) and one outlet in the top axially. its a 3d analysis.

Flow : - Incompressible, because no density change.
- No energy equation, no heat transfer.

Known boundary conditions:

inlet : pressure - 10 bar
flow rate - 20 lpm

outlet : flow rate - 20 lpm


Step 1 : The pressure drop study without filter element.
experimental results - 0.1 bar pressure drop.
Step 2 : The pressure drop study with filter element.
experimental results - 0.7 bar pressure drop.

the results of simulation are not even closer using various boundary combinations. suggest whether my assumptions are correct. am gettin answers in negative values.


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