https://forums.autodesk.com/t5/cfd-forum/air-plenum-modelling-resistance-head-capacity-curve/m-p/12204052#M564 <P><a href="https://forums.autodesk.com/t5/user/viewprofilepage/user-id/14288017">@renee_wurfel</a>&nbsp;,</P> <P>&nbsp;</P> <P>What do you mean by you've had no luck?</P> <P>Can you post the model?</P> <P>&nbsp;</P> <P>Marwan</P> Tue, 29 Aug 2023 12:59:32 GMT marwan_azzam 2023-08-29T12:59:32Z https://forums.autodesk.com/t5/cfd-forum/air-plenum-modelling-resistance-head-capacity-curve/m-p/12202747#M563 <P>Hi guys really need some help. I am trying to model this air plenum and get the correct pressure drop but I have had no luck. I am trying to model the inlet louvre to begin with then add the filter. I have assigned the inlet louvre as a resistance defined by the head capacity shown below.&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="renee_wurfel_5-1693265616041.png" style="width: 600px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1259205i1D6A2E466A10D4E0/image-size/medium?v=v2&amp;px=400" role="button" title="renee_wurfel_5-1693265616041.png" alt="renee_wurfel_5-1693265616041.png" /></span></P><P>I converted the velocities to volumetric flow rate and added into the material editor.&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="renee_wurfel_6-1693265693574.png" style="width: 600px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1259206i4CEAD7B1D40D04BB/image-size/medium?v=v2&amp;px=400" role="button" title="renee_wurfel_6-1693265693574.png" alt="renee_wurfel_6-1693265693574.png" /></span></P><P>&nbsp;</P><P>Images of the model Im trying to recreate and simulate:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="renee_wurfel_0-1693265316586.png" style="width: 600px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1259200i51C5C1A21FEB930D/image-size/medium?v=v2&amp;px=400" role="button" title="renee_wurfel_0-1693265316586.png" alt="renee_wurfel_0-1693265316586.png" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="renee_wurfel_1-1693265339206.png" style="width: 600px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1259201i2D1CDCED094D9020/image-size/medium?v=v2&amp;px=400" role="button" title="renee_wurfel_1-1693265339206.png" alt="renee_wurfel_1-1693265339206.png" /></span></P><P>&nbsp;</P><P>My REVIT Model:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="renee_wurfel_2-1693265427850.png" style="width: 600px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1259202iEAA5D88CC943B397/image-size/medium?v=v2&amp;px=400" role="button" title="renee_wurfel_2-1693265427850.png" alt="renee_wurfel_2-1693265427850.png" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="renee_wurfel_3-1693265460664.png" style="width: 600px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1259203i964F6FACA135F3A1/image-size/medium?v=v2&amp;px=400" role="button" title="renee_wurfel_3-1693265460664.png" alt="renee_wurfel_3-1693265460664.png" /></span></P><P>The axial fans I modelled: (4 all up 2 in each box)</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="renee_wurfel_4-1693265516258.png" style="width: 107px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1259204iA0BED52374D667C0/image-dimensions/107x385?v=v2" width="107" height="385" role="button" title="renee_wurfel_4-1693265516258.png" alt="renee_wurfel_4-1693265516258.png" /></span></P><P>I used the fan curve and RPM to edit the fan.&nbsp;</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="renee_wurfel_7-1693265851730.png" style="width: 600px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1259207i01799111DD22A5E4/image-size/medium?v=v2&amp;px=400" role="button" title="renee_wurfel_7-1693265851730.png" alt="renee_wurfel_7-1693265851730.png" /></span></P><P>Am I modelling it wrong or assigning things wrong please help thanks <span class="lia-unicode-emoji" title=":slightly_smiling_face:">🙂</span></P> Mon, 28 Aug 2023 23:37:32 GMT https://forums.autodesk.com/t5/cfd-forum/air-plenum-modelling-resistance-head-capacity-curve/m-p/12202747#M563 renee_wurfel 2023-08-28T23:37:32Z https://forums.autodesk.com/t5/cfd-forum/air-plenum-modelling-resistance-head-capacity-curve/m-p/12204052#M564 <P><a href="https://forums.autodesk.com/t5/user/viewprofilepage/user-id/14288017">@renee_wurfel</a>&nbsp;,</P> <P>&nbsp;</P> <P>What do you mean by you've had no luck?</P> <P>Can you post the model?</P> <P>&nbsp;</P> <P>Marwan</P> Tue, 29 Aug 2023 12:59:32 GMT https://forums.autodesk.com/t5/cfd-forum/air-plenum-modelling-resistance-head-capacity-curve/m-p/12204052#M564 marwan_azzam 2023-08-29T12:59:32Z