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Overshooting static pressure

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Old   March 18, 2014, 02:19
Default Overshooting static pressure
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I am modeling a flow through a channel such that the flow enters radially, travels axially along the length of the channel and then exits radially. This is part of my work on heat pipe modeling in Fluent and I have used a 2D axisymmetric geometry. Now I know the mass flow rate at the inlet & exit as well as the inlet static pressure. My aim is to get the axial pressure variation and so I read that if u use the pressure outlet condition then u can specify the static pressure and the target mass flow rate. So I used the pressure outlet bc at the inlet and the mass flow inlet bc at the outlet. However my static pressure at inlet is overshooting the specified static pressure of 8.57 bar ?? Any reasons why this could be happening & how to possibly correct it ??
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mass flow inlet, pressure conditions, static pressure

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