I am trying to solicit folks out there that may be users of certain programs, and then to simply indicate some opinion of which programs they liked or did not like, some reasons or good/bad points, and a suggested retailer. do reviews on cars, cameras, stereos, etc. I look at it as if somebody was looking for feedback on HYSIM vs. PipeFlow or any other surface piping softwareĭavid, no need to be sorry.
#PIPESIM DEMO HOW TO#
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora. You will be using this program to predict the outcome of millions of dollars of construction - relying on the old adage "if its on green-and-white, its right" is simply irresponsible. One of the systems had two off-take points and they would reverse the flow in the pipe between them with 1/2 psi change in one of the pressures - three of the five programs would fail when the flow reversed. Several programs lacked the "knobs" to "tweak" the program into compliance with the observed data (i.e., you couldn't do a calibration run). One program came to an Abnormal End (ABEND with indeciferable code) if you used the capability to loop a line and end up in a different point than the first line ended.
One program had an (undocumented) limit of 5 loop lines (one of my systems had 35). You can find this error by building a test model, running it, renumbering the nodes, and run it again - if the output from the two runs are not identical then "Houston we have a problem" and I would reject the program without further testing. This bias eliminated an excelent system modification because it wouldn't allow reverse flow. One program had a built in bias to flow from low-numbered nodes to high-numbered nodes. Some of the bonehead things I found were: I only found one that could be calibrated to match observed data on both systems and that is the one I use to this day (it is no longer for sale since the manufacturer went out of business). Since this was several years ago, I will not list the programs I tested (many of the problems I found have been corrected in intervening releases). A few years ago I went to the trouble to acquire 5 top-rated programs and build a model of two different gathering systems into each.
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