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I am new to Cfd. Please help to develop a MATLAB for this problem 

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April 23, 2016, 05:37 
I am new to Cfd. Please help to develop a MATLAB for this problem

#1 
New Member
Priyanka
Join Date: Oct 2015
Posts: 14
Rep Power: 3 
A thin plate is initially at a uniform temperature of 200C. At a certain time t = 0 the
temperature of the east side of the plate is suddenly reduced to 0C. The other surface is insulated. Use the explicit finite volume method in conjunction with a suitable time step size to calculate the transient temperature distribution of the slab and compare it with the analytical solution at time (i) t = 40 s, (ii) t = 80 s and (iii) t = 120 s. Comparison should be shown in a graphical plot as well as in a tabular form showing the percentage error with the analytical solution. Recalculate the numerical solution using a time step size equal to the limit given by the stability criteria (possibly 8 second or higher) for t = 40 s and compare the results with the analytical solution. Solve the problem using the both CrankNicholson scheme and fully implicit scheme and compare the results with analytical results at (i) t = 40 s, (ii) t = 80 s and (iii) t = 120 s. With a time step of 8 s, compare the results of all these three schemes (explicit, implicit and CrankNicholson) at time t = 40 s. The data are: plate thickness L = 2 cm, thermal conductivity k = 10 W/m/K and C = 10x106 J/m3 /K. 

April 23, 2016, 09:28 

#2 
Senior Member
Michael Prinkey
Join Date: Mar 2009
Location: Pittsburgh PA
Posts: 305
Rep Power: 16 
http://lmgtfy.com/?q=matlab+crank+nicholson
Is there a policy here about cutting and pasting homework problems? I honestly don't mind helping students with particular problems or questions, but these type of posts really annoy me. I am never going to be inclined to help someone who has clearly made zero initial effort. I suspect that most knowledgeable people here feel similarly. So, are these reportable? If not, should they be? 

April 23, 2016, 11:42 

#3  
Senior Member
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 2,997
Rep Power: 34 
Quote:
I agree.... perhaps someone could argue that a subsection for homework requests could be an idea, too... 

April 25, 2016, 07:08 

#4  
Senior Member
Arjun
Join Date: Mar 2009
Location: Nurenberg, Germany
Posts: 605
Rep Power: 15 
Quote:
Actually this is why i completely stopped visiting cfd online. I was contacted by many people about their masters or phds work and often found myself doing their thesis work. Like meshing and running simulations etc. I stopped replying emails etc which asked for homework. Asking on forum is some what forgivable because anyone can answer but still many times it shows that person did not do proper search or put proper effort. 

April 25, 2016, 07:14 

#5 
New Member
Priyanka
Join Date: Oct 2015
Posts: 14
Rep Power: 3 
I am an undergraduate. How can you say that i put zero effect. I tried it.I also tried googe if it could help me out. I know that i am at zero level but everything starts from there. Help me if you can. If you are too busy then you can ignore the post. There is no compulsion that you have to answer every question posted. Thank you.


April 25, 2016, 07:42 

#6  
Senior Member
Michael Prinkey
Join Date: Mar 2009
Location: Pittsburgh PA
Posts: 305
Rep Power: 16 
Quote:
Quote:
But you didn't. You took TWO problems exactly as issued by your instructor and posted them on a forum filled with highly competent CFD researchers and practitioners and asked them to think for you. If I were your instructor and saw your post, I would give you zero credit for whatever assignment you turned in. 

April 25, 2016, 07:55 

#7  
Senior Member
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 2,997
Rep Power: 34 
Quote:
this is just a homework .... 

April 25, 2016, 09:02 

#8 
Member
Join Date: Jul 2013
Posts: 49
Rep Power: 5 
I found this presentation by googling your statement. Slide 13 is an exact match. What you ask is basically plagiarism.


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