Re: [Paraview] calculate flow rate through a selected cross-section?
Thanks a lot David! Both methods worked great! Pei-Ying From: David E DeMarle dave.dema...@kitware.com To: Pei-Ying Hsieh phsieh2...@yahoo.com Cc: paraview paraview@paraview.org Sent: Wednesday, April 25, 2012 3:23 PM Subject: Re: [Paraview] calculate flow rate through a selected cross-section? On Wed, Apr 25, 2012 at 3:04 PM, Pei-Ying Hsieh phsieh2...@yahoo.com wrote: Hi, David, Thanks for the reply! I tried Generate Surface Normal first, then, did Integrate Variables. I got values for Surface Normal (vector) p (scalar) U (vector) ... It looks like integrate only sums up each parameter, so that, Surface Normal and U are still a vector. It does not do U dot A. You still need the calculator filter to compute the dot product. data-normals-calculator-integrate I have also tried Surface Flow. I got two values for Surface Flow, something like [-3.64248e-6 -3.64248e-6]. Shouldn't it be just one value? Those two are the same value. It is an artifact of the fact that the information tab typically shows characteristics of whole arrays. In this case you have an array with just one element. Show the output of the filter in the spreadsheet view instead. Pei-Ying From: David E DeMarle dave.dema...@kitware.com To: Pei-Ying Hsieh phsieh2...@yahoo.com Cc: paraview paraview@paraview.org Sent: Wednesday, April 25, 2012 11:17 AM Subject: Re: [Paraview] calculate flow rate through a selected cross-section? Use Generate Normals before the calculator and Integrate Variables after. Also try the Surface Flow which I does all three operations at once. David E DeMarle Kitware, Inc. RD Engineer 21 Corporate Drive Clifton Park, NY 12065-8662 Phone: 518-881-4909 On Wed, Apr 25, 2012 at 11:09 AM, Pei-Ying Hsieh phsieh2...@yahoo.com wrote: Dear Paraview experts, I completed a CFD calculations which contains, U (velocity field) and p (pressure field). I used extract selection to select a cross section. I then would like to calculate the flow rate through this cross section, ie, U dot A. I tried to use the Calculator function. I saw U in the vector field. Is there a way to have A (area, vector field) so that I can do U dot A, then, integrate U dot A to have flow rate? Thanks! Pei-Ying ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
[Paraview] calculate flow rate through a selected cross-section?
Dear Paraview experts, I completed a CFD calculations which contains, U (velocity field) and p (pressure field). I used extract selection to select a cross section. I then would like to calculate the flow rate through this cross section, ie, U dot A. I tried to use the Calculator function. I saw U in the vector field. Is there a way to have A (area, vector field) so that I can do U dot A, then, integrate U dot A to have flow rate? Thanks! Pei-Ying ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
Re: [Paraview] calculate flow rate through a selected cross-section?
Use Generate Normals before the calculator and Integrate Variables after. Also try the Surface Flow which I does all three operations at once. David E DeMarle Kitware, Inc. RD Engineer 21 Corporate Drive Clifton Park, NY 12065-8662 Phone: 518-881-4909 On Wed, Apr 25, 2012 at 11:09 AM, Pei-Ying Hsieh phsieh2...@yahoo.com wrote: Dear Paraview experts, I completed a CFD calculations which contains, U (velocity field) and p (pressure field). I used extract selection to select a cross section. I then would like to calculate the flow rate through this cross section, ie, U dot A. I tried to use the Calculator function. I saw U in the vector field. Is there a way to have A (area, vector field) so that I can do U dot A, then, integrate U dot A to have flow rate? Thanks! Pei-Ying ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
Re: [Paraview] calculate flow rate through a selected cross-section?
Hi, David, Thanks for the reply! I tried Generate Surface Normal first, then, did Integrate Variables. I got values for Surface Normal (vector) p (scalar) U (vector) ... It looks like integrate only sums up each parameter, so that, Surface Normal and U are still a vector. It does not do U dot A. I have also tried Surface Flow. I got two values for Surface Flow, something like [-3.64248e-6 -3.64248e-6]. Shouldn't it be just one value? Pei-Ying From: David E DeMarle dave.dema...@kitware.com To: Pei-Ying Hsieh phsieh2...@yahoo.com Cc: paraview paraview@paraview.org Sent: Wednesday, April 25, 2012 11:17 AM Subject: Re: [Paraview] calculate flow rate through a selected cross-section? Use Generate Normals before the calculator and Integrate Variables after. Also try the Surface Flow which I does all three operations at once. David E DeMarle Kitware, Inc. RD Engineer 21 Corporate Drive Clifton Park, NY 12065-8662 Phone: 518-881-4909 On Wed, Apr 25, 2012 at 11:09 AM, Pei-Ying Hsieh phsieh2...@yahoo.com wrote: Dear Paraview experts, I completed a CFD calculations which contains, U (velocity field) and p (pressure field). I used extract selection to select a cross section. I then would like to calculate the flow rate through this cross section, ie, U dot A. I tried to use the Calculator function. I saw U in the vector field. Is there a way to have A (area, vector field) so that I can do U dot A, then, integrate U dot A to have flow rate? Thanks! Pei-Ying ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
Re: [Paraview] calculate flow rate through a selected cross-section?
Hi, David, Thanks for the reply! I tried Generate Surface Normal first, then, did Integrate Variables. I got values for Surface Normal (vector) p (scalar) U (vector) ... It looks like integrate only sums up each parameter, so that, Surface Normal and U are still a vector. It does not do U dot A. I have also tried Surface Flow. I got two values for Surface Flow, something like [-3.64248e-6 -3.64248e-6]. Shouldn't it be just one value? Pei-Ying From: David E DeMarle dave.dema...@kitware.com To: Pei-Ying Hsieh phsieh2...@yahoo.com Cc: paraview paraview@paraview.org Sent: Wednesday, April 25, 2012 11:17 AM Subject: Re: [Paraview] calculate flow rate through a selected cross-section? Use Generate Normals before the calculator and Integrate Variables after. Also try the Surface Flow which I does all three operations at once. David E DeMarle Kitware, Inc. RD Engineer 21 Corporate Drive Clifton Park, NY 12065-8662 Phone: 518-881-4909 On Wed, Apr 25, 2012 at 11:09 AM, Pei-Ying Hsieh phsieh2...@yahoo.com wrote: Dear Paraview experts, I completed a CFD calculations which contains, U (velocity field) and p (pressure field). I used extract selection to select a cross section. I then would like to calculate the flow rate through this cross section, ie, U dot A. I tried to use the Calculator function. I saw U in the vector field. Is there a way to have A (area, vector field) so that I can do U dot A, then, integrate U dot A to have flow rate? Thanks! Pei-Ying ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
Re: [Paraview] calculate flow rate through a selected cross-section?
On Wed, Apr 25, 2012 at 3:04 PM, Pei-Ying Hsieh phsieh2...@yahoo.com wrote: Hi, David, Thanks for the reply! I tried Generate Surface Normal first, then, did Integrate Variables. I got values for Surface Normal (vector) p (scalar) U (vector) ... It looks like integrate only sums up each parameter, so that, Surface Normal and U are still a vector. It does not do U dot A. You still need the calculator filter to compute the dot product. data-normals-calculator-integrate I have also tried Surface Flow. I got two values for Surface Flow, something like [-3.64248e-6 -3.64248e-6]. Shouldn't it be just one value? Those two are the same value. It is an artifact of the fact that the information tab typically shows characteristics of whole arrays. In this case you have an array with just one element. Show the output of the filter in the spreadsheet view instead. Pei-Ying From: David E DeMarle dave.dema...@kitware.com To: Pei-Ying Hsieh phsieh2...@yahoo.com Cc: paraview paraview@paraview.org Sent: Wednesday, April 25, 2012 11:17 AM Subject: Re: [Paraview] calculate flow rate through a selected cross-section? Use Generate Normals before the calculator and Integrate Variables after. Also try the Surface Flow which I does all three operations at once. David E DeMarle Kitware, Inc. RD Engineer 21 Corporate Drive Clifton Park, NY 12065-8662 Phone: 518-881-4909 On Wed, Apr 25, 2012 at 11:09 AM, Pei-Ying Hsieh phsieh2...@yahoo.com wrote: Dear Paraview experts, I completed a CFD calculations which contains, U (velocity field) and p (pressure field). I used extract selection to select a cross section. I then would like to calculate the flow rate through this cross section, ie, U dot A. I tried to use the Calculator function. I saw U in the vector field. Is there a way to have A (area, vector field) so that I can do U dot A, then, integrate U dot A to have flow rate? Thanks! Pei-Ying ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
