Matlab Help needed that will allow you to compute the flow

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    Flow Matlab
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Discussion Overview

The discussion revolves around constructing a MATLAB file to compute flow based on a set of equations related to nodal analysis. Participants are seeking assistance with understanding specific equations and variables, as well as guidance on using MATLAB functions for their calculations.

Discussion Character

  • Homework-related
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant requests help in constructing a MATLAB file, providing links to images of the problem.
  • Another participant expresses urgency for assistance due to an impending submission deadline.
  • Several equations are presented, including relationships between flow rates (Q1, Q2, Q3, etc.), with one participant noting a similarity to nodal analysis.
  • Questions arise regarding the meaning of variable C and the interpretation of specific equations related to pressure drops (dp_all, dp2, dp4, etc.).
  • A participant indicates confusion over the equations and requests a breakdown for clarity.
  • One participant mentions understanding the equations but faces challenges in determining values for certain variables (C1, C10, L1, L10) and questions whether to assume values for L1 and L10.
  • There is a query about the use of the MATLAB function "fsolve" for solving equations.

Areas of Agreement / Disagreement

Participants express varying levels of understanding regarding the equations and concepts involved. There is no consensus on the interpretation of specific variables or the application of nodal analysis, indicating ongoing confusion and the need for clarification.

Contextual Notes

Participants have not resolved the definitions of certain variables or the assumptions needed for their calculations, particularly regarding the values of L1 and L10.

Who May Find This Useful

Individuals interested in MATLAB programming, fluid dynamics, or nodal analysis may find the discussion relevant.

uaeXuae
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May anyone help me construct the MATLAB file ?

http://img120.imageshack.us/img120/2598/problem2we3.jpg

http://img185.imageshack.us/img185/6756/problem2akg7.jpg
 
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Anyone please ? I have to submit this in 2 days please help...
 
WOW what a valuable POST THANX!


Regarding the Q's:

Q1=Q2+Q3
Q3=Q4+Q5
Q5=Q6+Q7
Q1=Q10
Q3=Q9
Q5=Q8

This is more like applying Nodal analysis ; reminds me of Current in = Current out. Which i understand.

Those three i still don't get :

Q1=Q10
Q3=Q9
Q5=Q8


Also Regarding the dp_all i don't get.

I can also see you have wrote dp2 twice;
->dp2=C2*Q2^2
->dp2=dp3+dp4+dp9
Similarly for dp 4

while you said dp6=dp7.

Can you please provide me with a litlle bit more details so it breaks down to pieces.
 
May you also what C represents ?

And The last four lines specifically :-

dp_all=dp1+dp2+dp3
dp2=dp3+dp4+dp9
dp4=dp5+dp6+dp8
dp6=dp7

I don't understand them. I tried applying the nodal anaylsis but it seems not to work how did you work those equations out ?
 
Anyone please help me submission is tommrow
 
OK i understand all the equations now but when i find the values of C1 & C10 i won't be able to because i don't have the values of L1 & L 10 although L1 = L10 shall i assue a value ?


How can i use "fsolve"
 

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