I'm not familiar with the software Omoniyi Moses Tope although I have some experince in sensitivity analysis of models that are resolved using the finite element method.

The core steps are:

1 Identify what parameters do you wish to vary and what are the appropriate ranges i.e a minimum and maximum values for these parameters

2 Create an efficient design that explores the model parameter space and run the model at a series of 'design points'.

3 Extract the model outputs that are of paraticular interest.

Steps 2 and 3 work best if you are able to write scripts for a) overwriting the default parameters in your model and runnning the model b) extracting the model output(s) of interest.

The Morris Test and eFAST are perhaps the two most commonly applied methods for global sensitivity analysis. Both methods involve you creating a set of design points, running your model and collecting the output (in the literature this process is referred to as a computer experiment). Based upon input and output you are able to perfrom the sensitivity analysis. Morris Test and eFAST are widely implemented in Software like R (open source) and Matlab and the results are easy to interpret.

This could be a fairly time consuming process depending on how fast your model runs.

Thank you so much Kevin McNally. Please are you able to shed some more light on the second step? or better still can you share a MATLAB script or code that you have used as an illustration. Thank you

It is a very interested question

I've not used the routines in Matlab although these are well documented (see the link below). I do my own sensitivity analyses in R and can provide my own code for this. The functions in sensitivity analysis packages will create the design for you - you just need to supply some information on the number of parameters and their ranges and the design will be created.

Article A Matlab toolbox for Global Sensitivity Analysis

Thank you so much@ Kevin McNally. Infact your answers are quite invaluable. I will be glad if you could provide the routine in R. I could get the software installed and work with it also alongside MATLAB

No problem with that. If you get R installed I can provide you with a simple example of the code and demonstrate how it is used.

Thank You Kevin McNally. As soon as i have installed R, i will contact you sir

Dear Omoniyi Moses Tope

Please take a look at this link

Best regards

https://hosting.umons.ac.be/html/mecara/Theses/YunXinWu_phd.pdf

Dear Omoniyi Moses Tope

Please take a look at this link

Best regards

https://hosting.umons.ac.be/html/mecara/Theses/YunXinWu_phd.pdf

thank you sir Omar Hazem MOHAMMED. I have downloaded and will go through the material sir