How do I plot a log log graph using this equations?

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SUMMARY

This discussion focuses on plotting log-log graphs for the equations (HgAh) = ChG^mL^n and (HdAm) = CmG^pL^q, specifically as functions of gas flow rate (G) with constant liquid flow rate (L). The recommended tool for this task is Gnuplot, a free and effective software for graphing. Users are encouraged to transform the equations into logarithmic form to extract the values of m and p. The participant has already gathered raw data for various gas and liquid flow rates, which is essential for plotting the graphs.

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  • Understanding of logarithmic transformations in equations
  • Familiarity with Gnuplot for graphing
  • Basic knowledge of fluid dynamics concepts related to gas and liquid flow rates
  • Ability to manipulate and analyze data sets
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  • Learn how to use Gnuplot for plotting log-log graphs
  • Study the process of logarithmic transformation of equations
  • Investigate methods for extracting coefficients from log-log plots
  • Explore data analysis techniques for flow rate data
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Engineers, researchers, and students in fluid dynamics or chemical engineering who are involved in data analysis and graphing of flow rate equations will benefit from this discussion.

davekardle
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(HgAh)=ChG^mL^n
(HdAm)=CmG^pL^q


I need to plot (HgAh) and (HdAm) As Fuction of G( Gas flow rate) with lines of Constant L( Liquid flow rate) and discern M and P from the equations above from Log Log Graphs.

I have collected a table of raw data with Various G at constant L.

How do I proceed?
 
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It depends on the software you have available.
I can recommend gnuplot. It's free, it's good, and it's a standard tool.
 
fuchs said:
It depends on the software you have available.
I can recommend gnuplot. It's free, it's good, and it's a standard tool.
Can't I just do it on excel ?
I don't undersntand how to get P and M from these equations by taking the log

log (hG aH) = log (Ch G^m L^n)

and

log ( hD aM) = log (Cm G^p L^q)

any idea?
 
I already have all the HdAm and HgAh for various Gas and Liquid flowrates
 

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