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Firstly, the number of points on Independent Variables tab was set as 6, but I only got two results after running sensitivity analysis. Secondly, I got an error message"DC-005: Solver reached the maximum number of iterations without converging." after running the adjust simulation. Thanks for your help.
I've followed the instructions for the control / adjust block but the simulation will not converge.I keep getting an error message:"Solver reached the maximum number of iterations without convering. (BubblePoint.vb 1703)"I tried to adjust the tolerance for the adjust block and even change the SP for the distillate to a lower concentration but I still have had no success.Any help would be appreciated.
In sensitive data analysis i have set the upper limit and lower limit & No. of points as per tutorial but in result section there is error shows in to total no. of points, can not showa the total no of points.
The Reflux ratio and purity attained doesn't match with the tutorial while using the Adjust option is that because the Molar fraction (mixture)/ Benzene in tutorial is seen as 0.988697(-0.0014) and for me it is shown to be 0.988672(-0.0013). Sensitivity analysis is working perfectly fine.(DWSIM VERSION 6.4.3 64 bit has been installed)
Hello dear friendsI want an example solved by optimization. Can anyone help?If anyone has a solved example, send it to my emailThank you very muchmortezasafari7171@gmail.com
As the column specification is already given in assignment and adjusting feed conditions , bottoms for acetone and water in mixture are still showing value 0.7 and 0.3 respectively. and not changing . and in sensitivity analysis under depending variable we have to take bottoms or distillate, as our desired reflux ration is to find for bottoms (water) . Kindly help for this sir.
Sir the results for the adjust feature are not matching. I followed the method given in tutorial exactly. It is not reaching 0.99 and the obtained reflux ratio is 2.55
the logical operator of adjust, it moves away instead of approaching the value I want, why is that? What can I do?
Hi I have follow all the steps from tutorial but i could not get benzene fraction of 0.901. Can someone please check why, below is my simulation file: https://drive.google.com/file/d/1RrH5G-9U1yq_J_dsuqYvzsMb1-DQH9D4/view?usp=sharingThanks!
Using adjust option, not getting results as sensitivity analysis. pl help
The number of stages in the problem is 13. Does it include the stage of reboiler or we need to do +1 when we carry out the simulation?
First of all I could not enter the values of feed flowrate in mol/s...it automatically changes to kmol/hr.Secondly the water mole fraction is already 0.99 before doing Adjust or Sensitivity analysis,how would I change it then....what should I take the Sef pount valu in adjusg block.Plese answet my query sir!!!
I got the final answer of XB= 0.99 for Reflux Ratio = 0.83919Can someone verify it.Please delete if posting answers is not allowed
As mentioned in the video training of Sensitivity and Adjust, I was trying to load the Rigorous working file in DW Sim Version 5.7, But it is showing empty flowsheet page. Please help
Dear Sir/Madam,We have an option of Reflux Ratio in the independent variables tab and why do we need to choose condenser specification value to optimize the reflux ratio.
There is no field to enter the Adjust Property Value. Can you please help?
Where does one enter Controlled Variable and Manipulated Variable for the Adjust block?
Adjust option is missing from the Object Palette. Can you please help.
Can you please help in finding the molar composition of the distillate stream after results are generated?
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Outline:Increasing the purity of distillate Independent variable in sensitivity analysis Dependent variable in sensitivity analysis Graphical display of sensitivity analysis results Verification of results of sensitivity analysis Multiple dependent variables in sensitivity analysis Manipulated variable in adjust Controlled variable in adjust Pushing the envelope through adjust
Increasing the purity of distillate Independent variable in sensitivity analysis Dependent variable in sensitivity analysis Graphical display of sensitivity analysis results Verification of results of sensitivity analysis Multiple dependent variables in sensitivity analysis Manipulated variable in adjust Controlled variable in adjust Pushing the envelope through adjust
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