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seeking for help about a room with negative pressure |
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November 26, 2009, 07:40 |
seeking for help about a room with negative pressure
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mengyue
Join Date: Sep 2009
Posts: 20
Rep Power: 17 |
hi guys,
i am trying a room with negative pressure. the details are: the pressure of this room is -620Pa, there exists a hole in some wall, and the pressure outside is 0, so the air flows into the room. to maintain the negative pressure, there exists an exhaust fan. so, how i simulate this problem to get the air field? i set the hole as pressure inlet and the value is 0, right? the depth of the wall is 0.6m, and i also set an exhaust fan and the gauge value is -620Pa and this fan can increase the pressure of the exhuasted air by 620Pa, right? but i am depressed by this simulation. the massflow rate is too big for my question and the pressure of the room is not always -620Pa. i am puzzled now. so, have you some good suggestions for my question? Ps: the hole in the wall is very very small. in fact, the question i am stuyding is the leakage of the concrete wall, so i set a hole in the wall. thanks for your help! |
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