4 ай бұрын
Пікірлер
@스제임-x9r 21 сағат бұрын
sir, can i save the figure result by timestep as video file ?
@annoon-i1l 5 күн бұрын
great thanks.............may I get the code?
@rahmatsunarya 4 күн бұрын
Sure please send me a email in [email protected]
@annoon-i1l 4 күн бұрын
@@rahmatsunarya great thanks for your help
@chuahchongyang1164 7 күн бұрын
I am unsure, but at 1:52, the f should be d2Cdx2 instead of dCdx?
@IloegbunamChukwuma 8 күн бұрын
Nice work.. Please simulate this type of advective model from the journal: DEEP-BED FILTRATION WITH MULTISTAGE DEPOSITION KINETICS by Vitaly Gitis etal, 2010.
@anantawasare4615 15 күн бұрын
Sir Please send me your mail for contact.
@lorenzo4351 16 күн бұрын
Hi, are you using Jacobi method for iteration, right? Your videos are very good!
@rahmatsunarya 13 күн бұрын
Hi. I'm using simple iteration in matlab. I do not know it was Jacobi method or not 😅
@robbyhidayat98 21 күн бұрын
cocok untuk mahasiswa Indonesia
@rahmatsunarya 13 күн бұрын
Thank You sir. Appreciate
@SIVANATHANVK 25 күн бұрын
Can anybody help to find out henry's selectivity from static adsopttion isotherm
@rahmatsunarya 23 күн бұрын
did you have a similar problem?
@smsirajulislam9805 25 күн бұрын
Nice to see your work again
@rahmatsunarya 23 күн бұрын
thank you sir for you support
@smsirajulislam9805 25 күн бұрын
Awesome
@rahmatsunarya 23 күн бұрын
thank you sir
@lxwan-j2c 26 күн бұрын
Thanks for your video! It's super helpful. Quick question though - I noticed the formula in the slide at 0:52 looks a bit off from the Peng-Robinson equation I'm familiar with. The formula shows (1-\kappa\frac{T}{T_c})^0.5, but I think it should be (1-\kappa(\frac{T}{T_c})^0.5). The code's right, so maybe just a typo in the slide?
@rahmatsunarya 26 күн бұрын
OMG, I got typo. That was (1-(T/Tc)^0.5)^2. I am so sorry. Thank you for noticed me
@IloegbunamChukwuma Ай бұрын
Nice 👍 What about a system of multistage deposition. Where there is more than 1 equations for the rate of particle adsorption and desorption. And also epsilon is time dependent... Very nice and wonderful video Sir. Thank you
@rahmatsunarya 29 күн бұрын
My pleasure sir
@IloegbunamChukwuma Ай бұрын
This video is quite helpful, but i have a question. What if epsilon(porosity) is a function of time, And rate of change of q(particle deposition) has more than one stage time dependent equation. Example in "Deep-bed filtration model with multistage deposition kinetics" by vitaly Gitis etal. How do we code such model. Thank you🎉
@IloegbunamChukwuma Ай бұрын
Thanks Very much for this video
@rahmatsunarya Ай бұрын
My pleasure
@Spectrojamz Ай бұрын
man, I'm looking for a textbook so I can understand this frfr
@rahmatsunarya Ай бұрын
Transport phenomena by Bird, Lighfoot
@Spectrojamz Ай бұрын
@@rahmatsunarya tysm sir
@rahmatsunarya Ай бұрын
@Spectrojamz good luck
@WonYYang Ай бұрын
How about kzbin.info/www/bejne/sJSni55npdasqMU
@annoon-i1l Ай бұрын
can you show the question plz?
@rahmatsunarya 9 күн бұрын
Hello. It's not from question, but from paper. Thank you
@WonYYang Ай бұрын
How about kzbin.info/www/bejne/sJSni55npdasqMU
@delolanang Ай бұрын
Mas Rahmat Sunarya, I am currently trying to develop a direct contact membrane distillation model using an advection-diffusion approach. If you have some time, I would like to ask you a few questions. 😅 The approach I am using is the finite difference method. I am having difficulty because, on one side, there is a boundary condition in the form of a function.The function itself need temperature from interior nodal..
@rahmatsunarya Ай бұрын
could you please tell me on gmail, Sir?
@gianfrancodilorenzo5759 Ай бұрын
Thanks for this video. Please can you explain me why in the BC-1 and BC-2 during discretization you divide for 2 (forward and backward 1st order seems not require that)?
@rahmatsunarya Ай бұрын
BC-1 is known left BC or how we start. So, we use forward. BC-2 is known right BC or how we finish. So, we use backward.
@rahmatsunarya Ай бұрын
I hope you get the point.
@gianfrancodilorenzo5759 Ай бұрын
@@rahmatsunarya Sorry the question was ill-posed. I was asking why in forward discretization (or backward) you divide by 2 in BC (at denominator you have the number 2 for both BC).
@rahmatsunarya Ай бұрын
Omg, it's my mistake. I am sorry. It is not divided by 2. Thanks for your comment
@soufien6477 3 ай бұрын
hi, did you post the code somewhere ?
@rahmatsunarya 3 ай бұрын
Sorry, I did not. If you need code, please let me know. Thx
@RangQuid 3 ай бұрын
great video, but the background music is very annoying.
@rahmatsunarya 3 ай бұрын
I am so sorry 🙏🏻
@eduardosarmiento3620 3 ай бұрын
Hi, can you helpme? please i can´t solve a system of PDE Cylindrical are six PDE of reaction
@rahmatsunarya 2 ай бұрын
Surely sir
@nghianguyenhuu3642 3 ай бұрын
Thank you for sharing useful knowledge
@rahmatsunarya 3 ай бұрын
my pleasure sir
@rahmatsunarya 3 ай бұрын
my pleasure sir
@chaisawatrattanadon4492 4 ай бұрын
Thank you for sharing your knowledge. You're code helped me a lot with my thesis
@rahmatsunarya 4 ай бұрын
Really? I am happy to hear that 😁
@hilda7823 4 ай бұрын
hello sir, may I ask. I'm currently casting the membrane, but I'm having a problem. After I cast it and then put it in the coagulation bath, my membrane sticks to the glass plate. Is there a solution that I can do to prevent the membrane from sticking to the glass plate? thank you..
@rahmatsunarya 4 ай бұрын
You should sink the casting membrane about 3 minute before you pick up your membrane. Did you let the membrane totally under coagulation bath in 3 minutes?
@hilda7823 4 ай бұрын
@@rahmatsunarya yes, i even sink the membrane more than 3 minutes because it was still sticking to the glass plate. anw i am using cellulose acetate and NMP solvent to make the membrane
@rahmatsunarya 4 ай бұрын
Please tell me the detail composition your membrane solution at [email protected]
@hilda7823 4 ай бұрын
@@rahmatsunarya i've emailed you, thank you so much for helping me
@rahmatsunarya 4 ай бұрын
I just answered your email. Kindly check
@AlperenSakar 4 ай бұрын
Hi thanks for the video, it's a very basic question but s it distilled water in the bath you drop the glass? if it isn't, which liquid is it?
@rahmatsunarya 4 ай бұрын
that's right. I used demin water
@ZainaKourach 4 ай бұрын
hello sir, i need thé code of the parametrical study of this same situation do u havé it please?? is about study thé effect of different parametrs on the breakthrough curve, is in the article source u put in this video. can u help me please i havé a presentation next week and i am really struggling 😢
@rahmatsunarya 4 ай бұрын
Please get me at [email protected]
@ZainaKourach 4 ай бұрын
Hi, i like your videos they are very usuful, i have a question about the breackthrough curve of adsorption can u help me please? Please answer me as fast as u can, i have a presentation in two weeks and i struggle to solve the problem in matlab, i am a biginner. Thank u so much
@rahmatsunarya 4 ай бұрын
Hi If you have question, please tell me at [email protected] thanks
@ZainaKourach 4 ай бұрын
@@rahmatsunarya I sent you an email. Thank you so much
@LongTran-k5z 4 ай бұрын
Can you please check your email? I sent you a private message. Thank you.
@LongTran-k5z 4 ай бұрын
Hi, at 6:25, why T(j-1,i) not T(j,i). You explained at 2-1=1 but I don't understand why. As you specified, T(1,:)=28 so j=2 will result T(1,i)=28 =B(i).. I am so confused.
@rahmatsunarya 4 ай бұрын
because of j starting from 2. in other hand we need as j=1, so, we put j-1.
@MathematicsVSA 4 ай бұрын
I have a code for my research problem.I am struggling to get a plot...can you help me. it's a fdm code.
@rahmatsunarya 4 ай бұрын
Fdm code? It's about PDE or ODE?
@Strix2023 4 ай бұрын
Could you pass me those books?
@rahmatsunarya 4 ай бұрын
I'm sorry. It's an illegal way
@SanleyGuerrier 4 ай бұрын
Hello, this video is very helpful. I have a question, How would you write the boundary condition matrix A and B if there are nonconstant flux terms such as radiation and convection which depend on the length(t)? Thank you!
@rahmatsunarya 4 ай бұрын
Please let me know your case in my email
@SanleyGuerrier 4 ай бұрын
@@rahmatsunaryaYes, I will. Thank you, sir.
@velascomartinezeverdavid3660 4 ай бұрын
Sorry, could you share me your script, please? I had problems with the funtion @fres
@rahmatsunarya 4 ай бұрын
Surely, please get me in gmail 🙏🏻
@salimelmas123 4 ай бұрын
Very good video! How can i include a non-linear ecuation in a boundary condition ?
@rahmatsunarya 4 ай бұрын
Yes surely Sir
@stephenlee8275 4 ай бұрын
Can Orthogonal Collocation method solve this problem with axial diffusion items？
@rahmatsunarya 4 ай бұрын
I think it can't be solved using orthogonal collocation method.
@Dehbozorgi.Chemical 5 ай бұрын
Thanks this video is very good
@rahmatsunarya 5 ай бұрын
My pleasure
@batoolahmad4024 5 ай бұрын
if I have a question about the sheet, can I contact you?
@rahmatsunarya 5 ай бұрын
Please tell me
@rizkirisnaldie4258 5 ай бұрын
Halo kak kenapa nilai Nt bernilai 101 dan nilai Nz 151 bagaimana cara mendapatkan kedua nilai tersebut?
@rahmatsunarya 5 ай бұрын
Halo. Itu bisa disesuaikan. Tidak harus segitu. Bole Nt= 50, Nz= 20. Nilainya bebas. Itu hanya menunjukkan pembagian range waktu dan jarak. Trims
@rizkirisnaldie4258 5 ай бұрын
@@rahmatsunarya Peran Nt dan Nz pada program itu sebagai ap ya kak?
@rahmatsunarya 5 ай бұрын
Jika nilainya makin besar, makan hasilnya lebih akurat. Jika nilainya makin kecil, hasilnya tidak begitu akurat. Dan juga apabila nilainya besar tentu akan memakan waktu perhitungan yg lama.
@rizkirisnaldie4258 5 ай бұрын
@@rahmatsunarya siap terimakasih kak
@rahmatsunarya 5 ай бұрын
Terima kasih kembali 😊
@rizkirisnaldie4258 5 ай бұрын
Why Nt=101 and Nz=151 sir?
@rahmatsunarya 5 ай бұрын
It's a number for meshing time and space
@karthickarul2660 5 ай бұрын
At 3.18 how are you doing ? Am not getting. Please explain
@rahmatsunarya 5 ай бұрын
Make a function, turn PDE to ODEs function
@RafaMoraga777 5 ай бұрын
Dear, just a question, what kind of Matlab License you need to upload these beautiful videos? Regards.
@rahmatsunarya 5 ай бұрын
Student license sir
@arathcamacho1247 5 ай бұрын
excelent video really enjoy you’re content, could next video be about volume control solved by elliptic equations? Maybe solve problem 29.9 on chapras book 7th edition
@rahmatsunarya 5 ай бұрын
Is it PDE in rectangular case?
@arathcamacho1247 5 ай бұрын
@@rahmatsunarya yes!
@rahmatsunarya 5 ай бұрын
Hmm it is a irreguler mesh point. What do you think ?
@arathcamacho1247 5 ай бұрын
@@rahmatsunarya i have the equations for the desired nodes, the thing im struggling with is making the matlab code 😓
@rahmatsunarya 5 ай бұрын
@arathcamacho1247 would u please to tell me?
@ananthakrishnanb2158 5 ай бұрын
Hy.. I tried putting the same code on matlab and it's not working.. I am actually trying to solve a system of 4PDE in matlab. ( Absolutely new to this) I feel like this video is very similar to the problem..so I was trying to draw parallels.. unfortunately I couldn't run the code in matlab.. Can you help me out too?..
@rahmatsunarya 5 ай бұрын
Sure. Please let me know
@ananthakrishnanb2158 5 ай бұрын
@@rahmatsunarya Error using vertcat Dimensions of arrays being concatenated are not consistent. Error in self3>f (line 124) dydt=[dc1dt;dc2dt;dc3dt;dq1dt;dq2dt;dq3dt]; Error in odearguments (line 92) f0 = ode(t0,y0,args{:}); % ODE15I sets args{1} to yp0. Error in ode15s (line 148) odearguments(odeIsFuncHandle, odeTreatAsMFile, solver_name, ode, tspan, y0, options, varargin); Error in self3 (line 36) [t, y] =ode15s(@f,t,IC,[],eps,u,LDF,b1,b2,b3,qm1,qm2,qm3,c10,c20,c30,rhop,Nz,dz); >> these kinda errors i am getting .can i contact you via gmail?
@ananthakrishnanb2158 5 ай бұрын
@@rahmatsunarya i am getting erros like Error using vertcat Dimensions of arrays being concatenated are not consistent. Error in self3>f (line 124) dydt=[dc1dt;dc2dt;dc3dt;dq1dt;dq2dt;dq3dt]; Error in odearguments (line 92) f0 = ode(t0,y0,args{:}); % ODE15I sets args{1} to yp0. Error in ode15s (line 148) odearguments(odeIsFuncHandle, odeTreatAsMFile, solver_name, ode, tspan, y0, options, varargin); Error in self3 (line 36) [t, y] =ode15s(@f,t,IC,[],eps,u,LDF,b1,b2,b3,qm1,qm2,qm3,c10,c20,c30,rhop,Nz,dz); >> for the same code youre using. Can i contact you via gmail ?
@rahmatsunarya 5 ай бұрын
Surely, [email protected]
@ananthakrishnanb2158 5 ай бұрын
@@rahmatsunarya I have mailed you
@philanthropic6588 5 ай бұрын
Hello sir. Can I solve FTFSCS method by using this formula. Please respose.
@rahmatsunarya 5 ай бұрын
What is FTFSCS?
@smsirajulislam9805 5 ай бұрын
Awesome video
@rahmatsunarya 5 ай бұрын
thank you sir
@bhupeshnemmaniwar2484 5 ай бұрын
Pls send your mail id and ph no
@rafiqulislam1085 5 ай бұрын
Thanks a lot. Excellent work
@rahmatsunarya 5 ай бұрын
My pleasure
@nithinbharadwaj4770 6 ай бұрын
I see that the units in the model does not match, when q is in kg/kg..
@rahmatsunarya 6 ай бұрын
I am sorry for the mistake. But in this video, I want to share how to solve PDE-ODE. That's all. I am not focused on unit or unsubstantial content except solving the transport equation.