matlab - Latest Commentshttp://matlab-cheme-cmu.disqus.com/enWed, 27 Oct 2021 04:15:28 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/08/09/phase-portraits-of-a-system-of-odes/#comment-5586061056<p>thanks a lot !!! got a good amount of understanding</p>vivek1234Wed, 27 Oct 2021 04:15:28 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/09/30/plane-poiseuelle-flow-solved-by-finite-difference/#comment-5533304136<p>created an account just so i could leave a comment saying this is great</p>sowmya iyerMon, 13 Sep 2021 14:11:46 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/08/09/phase-portraits-of-a-system-of-odes/#comment-5318073099<p>Thanks a lot!!</p>Avinash KumarFri, 26 Mar 2021 08:35:31 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/11/17/modeling-a-transient-plug-flow-reactor/#comment-5103385502<p>I need this file please, send it to me nebula_n81@criptext.com</p>Rogelio GarcíaThu, 08 Oct 2020 22:18:57 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/11/17/modeling-a-transient-plug-flow-reactor/#comment-4793406419<p>What can we do for two reversible reactions with two reactants and two products in this case?</p>Min WUWed, 12 Feb 2020 11:13:48 -0000Re: Matlab in Chemical Engineering at CMU http://matlab.cheme.cmu.edu/2011/12/25/gibbs-energy-minimization-and-the-nist-webbook/#comment-4791616613<p>Thank you very much for sharing this. It is very useful for me.</p>NiknkkTue, 11 Feb 2020 02:49:19 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/11/17/modeling-a-transient-plug-flow-reactor/#comment-4772257016<p>Thanks for your help. By the way this is the system I want to solve. <a href="https://uploads.disquscdn.com/images/43c63dfa96baa09accaf6ac1aac680915bc663f9b368b3e13735518729bab5bf.png" rel="nofollow noopener" title="https://uploads.disquscdn.com/images/43c63dfa96baa09accaf6ac1aac680915bc663f9b368b3e13735518729bab5bf.png">https://uploads.disquscdn.c...</a> ,</p>Franklin GarciaSun, 26 Jan 2020 17:24:57 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/11/17/modeling-a-transient-plug-flow-reactor/#comment-4771656578<p>you are probably trying to solve a system of ODES. You might look at this example <a href="http://matlab.cheme.cmu.edu/2011/08/07/first-order-reversible-reaction-in-batch-reactor//" rel="nofollow noopener" title="http://matlab.cheme.cmu.edu/2011/08/07/first-order-reversible-reaction-in-batch-reactor//">http://matlab.cheme.cmu.edu...</a> for some guidance.</p>JohnKitchinSun, 26 Jan 2020 07:34:12 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/11/17/modeling-a-transient-plug-flow-reactor/#comment-4771246967<p>Hello, I am currently working in modelling a PFR in a water treatment plant for an university project and I am working with to substances substrate and biomass, so I need to solve two differential equations. I was using your program but I do not know how can I implement it to solve the second differential equation. Do you know if it is possible to do. thanks</p>Franklin GarciaSat, 25 Jan 2020 22:51:46 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/08/27/introduction-to-statistical-data-analysis/#comment-4759600775<p>This is great, thank you!</p>Genevieve GoebelThu, 16 Jan 2020 13:06:02 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/09/11/the-equal-area-method-for-the-van-der-waals-equation/#comment-4707573509<p>You save my life, I am eternally grateful.</p>KuanSat, 30 Nov 2019 13:37:23 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/11/17/modeling-a-transient-plug-flow-reactor/#comment-4369779266<p>You need to add "global V k vo" to the main and the function for the code to run and produce the graph presented</p>Jose TaboraFri, 08 Mar 2019 11:43:26 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2012/08/31/what_do_you_want-m/#comment-4227996235<p>@JohnKitchin Dear sir,<br>I have some doubts on modelling of mass transport in tubular membrane (hollow fiber membrane) using matlab.<br>how to convert partial differential equation to ODE <br>and i have inflow values only how to make boundary condition on membrane liquid surface (since it is laminar flow, radial diffusion take place while flow is in axial direction )</p>ThineshThu, 06 Dec 2018 09:56:54 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2012/05/08/enhancements-to-matlab-wordpress-2/#comment-4163308918<p>This is great info ! Thanks</p>Joe ClarkeFri, 26 Oct 2018 03:06:44 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/10/31/matlab-meets-the-steam-tables/#comment-4122746522<p>Thanks for sharing.</p>JohnKitchinSun, 30 Sep 2018 20:14:45 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/10/31/matlab-meets-the-steam-tables/#comment-4111698008<p>Just tried, this is the same<br><a href="https://in.mathworks.com/matlabcentral/fileexchange/9817-x-steam-thermodynamic-properties-of-water-and-steam" rel="nofollow noopener" title="https://in.mathworks.com/matlabcentral/fileexchange/9817-x-steam-thermodynamic-properties-of-water-and-steam">https://in.mathworks.com/ma...</a></p>Ephraim RajMon, 24 Sep 2018 11:44:54 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/10/31/matlab-meets-the-steam-tables/#comment-4111697713<p><a href="https://in.mathworks.com/matlabcentral/fileexchange/9817-x-steam-thermodynamic-properties-of-water-and-steam" rel="nofollow noopener" title="https://in.mathworks.com/matlabcentral/fileexchange/9817-x-steam-thermodynamic-properties-of-water-and-steam">https://in.mathworks.com/ma...</a><br>This works</p>Ephraim RajMon, 24 Sep 2018 11:44:47 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/10/31/matlab-meets-the-steam-tables/#comment-4000254733<p>It may be gone forever. I do not know if there is an updated link.</p>JohnKitchinSat, 21 Jul 2018 18:56:11 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/10/31/matlab-meets-the-steam-tables/#comment-3998557129<p>hello <br>i couldn't find the file i guess the link doesn't work please could you put a direct link which allowed me to download it</p>legend of koooraFri, 20 Jul 2018 14:23:57 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/11/17/modeling-a-transient-plug-flow-reactor/#comment-3939670552<p>i want it please if you have it, fiigyandoh@gmail.com</p>Edmund Sam-GyandohMon, 11 Jun 2018 11:41:46 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2012/06/19/colors-3d-plotting-and-data-manipulation/#comment-3851674445<p>It is a nonlinear regression, so you have to give the algorithm an initial guess to start it.</p>JohnKitchinThu, 12 Apr 2018 09:21:46 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2012/06/19/colors-3d-plotting-and-data-manipulation/#comment-3851601846<p>Hi, <br>what does " guesses=[20, 40, 20];" means in the codes for fitting the data? <br>Thank you</p>林瑞容Thu, 12 Apr 2018 08:28:57 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/11/17/modeling-a-transient-plug-flow-reactor/#comment-3810595710<p>I also want it please if you have it send it to me <br>noor_aljmmal_1986@hotmail.com</p>Noor AljammalSat, 17 Mar 2018 11:09:09 -0000Re: Matlab in Chemical Engineering at CMU http://matlab.cheme.cmu.edu/2011/12/25/finding-equilibrium-composition-by-direct-minimization-of-gibbs-free-energy-on-mole-numbers/#comment-3798907794<p>I got the result, I am trying to do it for bio-mass and air plus water is it possible... <br>like CH1.72O0.65+0.15H20+0.6502.. Need to change the equivalence ratio and moisture content</p>ಮನು ಭಕ್ತMon, 12 Mar 2018 08:40:53 -0000Re:
Matlab in Chemical Engineering at CMU
http://matlab.cheme.cmu.edu/2011/09/02/stopping-the-integration-of-an-ode-at-some-condition/#comment-3723170742<p>True, that should work. Thank you. If value is a vector, apparently if one of the events is triggered (ie if one of the components become 0), the integration is terminated.</p><p>Another problem i faced was that, because numerical integration is carried out, the 'time' when concentration exactly becomes 0, was skipped depending on time step.. so the event was not triggered and i ended up getting negative values for concentration. (This was finally resolved by checking for a sign change instead of checking if the value is zero... just sharing.. ^-^ )</p>batmanTue, 23 Jan 2018 20:50:05 -0000