Sir Thank you for the very good simulation. My question is : when I change the Adsorption value from 0.001 to 0.01 I had no change in the graph, even I follow the same steps. Could you please tell me why ? Thank you in advance. I notice that I use COMSOL 5.5
Hollo, I hope to obtain some information in my questioned. How to change the simulation from non-wetting to partial wetting specially when using hollow fiber membrane in simulation ? Thanks.
Hello, My research is on modeling of thermal remediation (mostly steam flushing or thermal conduction heating) for treatment of groundwater contaminated with LANPLs and DNAPLs. I wonder if Comsol can model multiphase systems. I only have access to student version which is not a full version so I should add the equations eventually. do you have a reference with all the equations that I can use and add to the student version for my 3D model? Thanks so much for the tutorial.
Hi, editor of channel here. In my work I have only scratched the surface of what Comsol Multiphysics is capable of, but a strength with the program is that you can combine different kinds of physics. I remember even seeing a model of pyroclastic flows and we once had a PhD-student at our department modeling transport in swelling systems (medicine pills that you swallow and swell in your gut. If the system swells the whole geometry changes which makes modelling a really tough task). As I understand it, however, Comsol Multiphysics is strongest in the fields where there is a tough commercial pressure. Some chemical related parts have been lagging a bit behind as other parts develop (That's my experience all the time since the program was called Femlab). My knowledge of Comsol Multiphysics is limited though, so I partly base my impression on what other experts tell me about Comsol Multiphysics. Per W, the creator of this video, did have a research project on remediation of soils in cold climates, we do have minor student projects in our courses on the spreading of contaminants in soils, and we have had master thesis students looking into soil remediation. However, as I understand it no-one at our department has been into hard-core modeling LANPLs and DNAPLs
@@dr.mohanadm-ridha1130 Please only send your questions once. We already answered your question under another video: It would not surprise me if it is possible as you can combine different physics models in Comsol. At our department, however, we co-develop other tools for simulating, optimising and controlling chromatographic systems e.g. for the production of biopharmaceuticals. At the core is a program than can run/control other software (including Comsol and Aspen) as well as running our own code. For more information regarding similar research at the department see e.g. doi.org/10.1016/j.cherd.2019.12.015 doi.org/10.1016/j.chroma.2020.461760 doi.org/10.1016/j.jbiotec.2019.05.013
I'm using comsol 5 , they have transport of diluted species in porous media (tds), the product that I'm looking for is not there, how to find species transport in porous media (chpm) in comsol 5 or any other version?
i didn't understand the reaction of adsorption , the equation of adsorption rate is :r=k(q^2) , where r is the initial adsorption rate (mg/g min), but the unit in comsol is mol/(m^3).s, how did y calculate r?????? please unswer me ?? i need your help
Hi, editor of the channel here: That's a really intricate problem (if you want to model it in detail) since the structure of the membrane and its support structure changes with depth and a really important part of the transport problem is on the feed/retentate side (concentration-polarization…what is the concentration _at_ the membrane _really_?) and that's not even beginning to discuss the problem of pore size distribution and what the "size" of a (charged?/uncharged?) solute is. We unfortunately have limited resources and thus feel we need to focus mainly on things that benefits the students in our courses, so sorry, no, we can't help you, but if you have a proposal for research collaboration, feel free to contact our experts in the field of membrane filtration./Mattias
Thank you very much for your answer. I am very interested for a collaboration, it will be possible to have the coordinates of our expert in membrane. Thank you cordially
Hi sir, is it possibe that I can send you my comsol problem so you can look at it if you have time? I want to study the drug release from a membranous sphere to a media.
sir I am working on a project of carburization.I am trying to simulate in the comsol software.The process is such that the methane and hydrogen gas is passed to the sample in a temperature of 720 k so that methane breaks to form carbon which is diffused.the diffusion follows ficks law and I do have the values for inital and surface concentration.can you please help me to solve this.also it is done in the presence of plasma.Also the sample is placed in furnace
Hello. This is really helpful. I am studying hydrology and water resources and I am trying to model solute transport in groundwater and do not have an engineering background. Please can you give me ideas on how to deepen my knowledge of this.
Hi, editor of the channel here: We don't have resources to put much emphasis on answering external questions, but to be able to model solute transport in groundwater (which is what this screencast is about) I would say you likely need to read up on things like mass balances, adsorption, chemical equilibrium, solubility, flow in porous media (Darcy's law etc.). Note: if the solubility is low you probably want to do a search on LNAPL and DNAPL
@@aishakhaleel5352 I'm working on simulating a mass transfer in porous media. I am having difficulty setting the maximum concentration in the domain. Did you figure out how to do that? The stream has a higher concentration that my domain can adsorb..
Hi, can you help me ? My research is about the solute transport in porous media(advection-dispersion equation in 3D) , this video was very helpful in my work . My equestion is I have four boundary conditions about the concentration in witch steep I must applay these boundaries ..??. I hope you will help me 🙏🏻
thanks for this tutorial :) i am a student and i am working on modeling of convective drying of fruit which is considered as a porous media. i am trying to do a multiphysic problem. The model is based on the heat and mass transfer equations and the mechanical equilibrium equation under the assumptions of plane deformation, viscoelasticity and isotropic hydric shrinkage. however, i find many problems in simulating this problem since i am not so good at using comsol. would you please give us a tutorial on this subject ?
Editor here: we create videos for the courses we teach and what you describe is not included in any of them. Hopefully you can find someone else who will create such a tutorial
Editor here: We can help our students and I sometimes answer questions regarding things that appear unclear in our videos (since doing that might help our students as well) but we don't have the resources to help people in general. We do make some of our educational videos public so that other people than our students might hopefully benefit, but for help with projects or assignments we refer you to your local teacher/educational institution.
There isn't a single detail in your explanation that I didn't understand. Thank so much for this ! Keep posting examples for God's sake...
Excellent tutorial Sir. Thank you. Hoping for more videos.
You explain steps very well in details. Thank you. Can you please add more training modules in fluid flow, chemical reaction ?
Hi, editor of the channel here: That is not part of the course module so it's very unlikely that we will add that.
Sir
Thank you for the very good simulation.
My question is : when I change the Adsorption value from 0.001 to 0.01 I had no change in the graph, even I follow the same steps. Could you please tell me why ? Thank you in advance. I notice that I use COMSOL 5.5
Hollo,
I hope to obtain some information in my questioned.
How to change the simulation from non-wetting to partial wetting specially when using hollow fiber membrane in simulation ?
Thanks.
what a great video. thank you very much
Hello, My research is on modeling of thermal remediation (mostly steam flushing or thermal conduction heating) for treatment of groundwater contaminated with LANPLs and DNAPLs. I wonder if Comsol can model multiphase systems. I only have access to student version which is not a full version so I should add the equations eventually. do you have a reference with all the equations that I can use and add to the student version for my 3D model?
Thanks so much for the tutorial.
Hi, editor of channel here. In my work I have only scratched the surface of what Comsol Multiphysics is capable of, but a strength with the program is that you can combine different kinds of physics. I remember even seeing a model of pyroclastic flows and we once had a PhD-student at our department modeling transport in swelling systems (medicine pills that you swallow and swell in your gut. If the system swells the whole geometry changes which makes modelling a really tough task).
As I understand it, however, Comsol Multiphysics is strongest in the fields where there is a tough commercial pressure. Some chemical related parts have been lagging a bit behind as other parts develop (That's my experience all the time since the program was called Femlab). My knowledge of Comsol Multiphysics is limited though, so I partly base my impression on what other experts tell me about Comsol Multiphysics.
Per W, the creator of this video, did have a research project on remediation of soils in cold climates, we do have minor student projects in our courses on the spreading of contaminants in soils, and we have had master thesis students looking into soil remediation.
However, as I understand it no-one at our department has been into hard-core modeling LANPLs and DNAPLs
hi. I want to get the source of equation 9,24 used in tutorial
Hello, I'im trying to model dissolution in fractures by calcuting calcium flux rate. any idea please?
i am using comsol 5 , they have transport of diluted species in porous media (tds), how to find species transport in porous media (chpm) in comsol 5?
Could you please if it is possible to simulate a fluidized bed reactor with adsorption isotherm model
Thank you
@@dr.mohanadm-ridha1130 Please only send your questions once. We already answered your question under another video:
It would not surprise me if it is possible as you can combine different physics models in Comsol. At our department, however, we co-develop other tools for simulating, optimising and controlling chromatographic systems e.g. for the production of biopharmaceuticals. At the core is a program than can run/control other software (including Comsol and Aspen) as well as running our own code.
For more information regarding similar research at the department see e.g.
doi.org/10.1016/j.cherd.2019.12.015
doi.org/10.1016/j.chroma.2020.461760
doi.org/10.1016/j.jbiotec.2019.05.013
I'm using comsol 5 , they have transport of diluted species in porous media (tds), the product that I'm looking for is not there, how to find species transport in porous media (chpm) in comsol 5 or any other version?
Editor: We cannot provide support on Comsol, but please note that there are different toolboxes available for Comsol.
i didn't understand the reaction of adsorption , the equation of adsorption rate is :r=k(q^2) , where r is the initial adsorption rate (mg/g min), but the unit in comsol is mol/(m^3).s, how did y calculate r?????? please unswer me ?? i need your help
Me too, if you know, tell.
Can you help me? I would like to model the transport of solute in a Nanofitration membrane.
Hi, editor of the channel here: That's a really intricate problem (if you want to model it in detail) since the structure of the membrane and its support structure changes with depth and a really important part of the transport problem is on the feed/retentate side (concentration-polarization…what is the concentration _at_ the membrane _really_?) and that's not even beginning to discuss the problem of pore size distribution and what the "size" of a (charged?/uncharged?) solute is.
We unfortunately have limited resources and thus feel we need to focus mainly on things that benefits the students in our courses, so sorry, no, we can't help you, but if you have a proposal for research collaboration, feel free to contact our experts in the field of membrane filtration./Mattias
Thank you very much for your answer. I am very interested for a collaboration, it will be possible to have the coordinates of our expert in membrane.
Thank you
cordially
can you also help me? because I am beginner and i also have to study membranes and EDR.
Hi sir, is it possibe that I can send you my comsol problem so you can look at it if you have time? I want to study the drug release from a membranous sphere to a media.
I answer as editor of this channel: Sorry, we don't have the possibility to offer much help to students at other universities.
sir
I am working on a project of carburization.I am trying to simulate in the comsol software.The process is such that the methane and hydrogen gas is passed to the sample in a temperature of 720 k so that methane breaks to form carbon which is diffused.the diffusion follows ficks law and I do have the values for inital and surface concentration.can you please help me to solve this.also it is done in the presence of plasma.Also the sample is placed in furnace
Editor here: Sorry, we don't have the resources to support students at other universities with their projects. Try contacting a local expert.
Hello. This is really helpful. I am studying hydrology and water resources and I am trying to model solute transport in groundwater and do not have an engineering background. Please can you give me ideas on how to deepen my knowledge of this.
Hi, editor of the channel here: We don't have resources to put much emphasis on answering external questions, but to be able to model solute transport in groundwater (which is what this screencast is about) I would say you likely need to read up on things like mass balances, adsorption, chemical equilibrium, solubility, flow in porous media (Darcy's law etc.). Note: if the solubility is low you probably want to do a search on LNAPL and DNAPL
Thank you so much for your kind suggestions. I will check them up.
Dear, I want to simulate adsorption process in fixed activated carbon bed by using comsol
+zaman saleh Did you figure out how to do that? I have an adsorption problem also, and I do not know how to account for the adsorption?
@@aishakhaleel5352 I'm working on simulating a mass transfer in porous media. I am having difficulty setting the maximum concentration in the domain.
Did you figure out how to do that?
The stream has a higher concentration that my domain can adsorb..
Hi, can you help me ? My research is about the solute transport in porous media(advection-dispersion equation in 3D) , this video was very helpful in my work . My equestion is I have four boundary conditions about the concentration in witch steep I must applay these boundaries ..??.
I hope you will help me 🙏🏻
Editor here: Sorry, we do not have the resources needed ot reach out to help you.
thanks for this tutorial :)
i am a student and i am working on modeling of convective drying of fruit which is considered as a porous media.
i am trying to do a multiphysic problem. The model is based on the heat and mass transfer equations and the mechanical equilibrium equation under the assumptions of plane deformation, viscoelasticity and isotropic hydric shrinkage. however, i find many problems in simulating this problem since i am not so good at using comsol.
would you please give us a tutorial on this subject ?
Editor here: we create videos for the courses we teach and what you describe is not included in any of them. Hopefully you can find someone else who will create such a tutorial
I see. It's ok .. thank you so much sir :)
I hope you continue this great job :)
what version of comsol is this please
This video was made in 2014, so judging from www.comsol.com/release-history my guess is that it was version 5.0
Hi, can you help me with a pollutant River simulation
Editor here: We can help our students and I sometimes answer questions regarding things that appear unclear in our videos (since doing that might help our students as well) but we don't have the resources to help people in general. We do make some of our educational videos public so that other people than our students might hopefully benefit, but for help with projects or assignments we refer you to your local teacher/educational institution.
Please i need your video as pdf
Hi, could u send me the ppt file please .
Hello Sir, can I have your contact detail?