Tag Archives: thermodynamics

Testing the Thermodynamic Functions for Saturated Water As A Function of Pressure

Posted on April 18, 2016 by R.P. Churchill

I was getting ready to do new curve fits on all the segments of the thermodynamic functions that seemed to require it. However, I realized that I hadn’t yet plotted them all out as a function of pressure since I … Continue reading →

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Steam Table Functions, Curve Fitting, and Yes, the Graph Project

Posted on April 13, 2016 by R.P. Churchill

I’m finally detouring back to fixing the handful of errant segments in the steam table functions I created for my simulation work in the early 90s. This graph, originally posted on March 16th, shows a hiccup in the segment from … Continue reading →

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First Implementation of Logarithmic Scale On One Axis

Posted on March 21, 2016 by R.P. Churchill

I was able to get the x-axis drawn out in a logarithmic scale, get the plot drawn on the same scale, and do it in a somewhat modular fashion. It needs a few pixel-level tweaks still and to be replumbed … Continue reading →

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Testing the Thermodynamic Functions for Saturated Water As A Function of Pressure–Except…

Posted on March 17, 2016 by R.P. Churchill

I started working through the graphs of the various thermodynamic functions vs. pressure and recognized that the standard format wasn’t showing all of the detail contained in the fits across the different ranges of input pressure. If the plotable width … Continue reading →

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Testing the Thermodynamic Functions for Saturated Water As A Function of Temperature

Posted on March 16, 2016 by R.P. Churchill

Here are plots of the standard thermodynamic values for saturated water, all as a function of temperature. Tomorrow I’ll plot them all out as a function of pressure. I extended the range of each function below 32 degrees Fahrenheit to … Continue reading →

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Reverse Engineering Or… What Was It I Was Trying To Do There?

Posted on February 23, 2016 by R.P. Churchill

While continuing the process of turning the JavaScript graph widget into an object I found I needed to create labels of various kinds, which you see added in the examples below. I also wanted to test out some more of … Continue reading →

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Checking My Steam Table Functions

Posted on February 17, 2016 by R.P. Churchill

While I was working out a steam table page yesterday I found it necessary to graph the functions out as a means of verifying them.  Here’s the first graph I created in JavaScript.  It shows not only the curve of … Continue reading →

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Steam Tables (and Thermodynamic Properties of Fluids In General)

Posted on February 16, 2016 by R.P. Churchill

A little while ago I was ruminating on the subject of needing to know the thermodynamic properties of materials before you could do simulations of those materials. I therefore figured I’d spend the week dusting off some old functions I’d … Continue reading →

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Simulations: What Gets Modeled And What Doesn’t

Posted on February 1, 2016 by R.P. Churchill

When I’m not flogging away at code these days I’m thinking about continuous simulations and the details that get modeled within them. Specifically I’ve been reading about and thinking about operations in petrochemical refineries, and even more specifically certain classes … Continue reading →

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