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PHP Fluid Flow Calculations

Information about Calculations on LMNO Engineering website

All of the calculations on the LMNO Engineering, Research, and Software, Ltd., website have been coded using double precision and checked against known results. Even though some of the calculations show output fields to eight significant figures to save space while some show 16 significant figures, all internally perform computations in double precision. LMNO Engineering is confident that the programs work as intended; however, LMNO Engineering cannot be held responsible for any negative consequences of using the programs. Our calculations are written in the PHP programming language.


Error Messages within a Calculation

If a calculation divides by zero, a "NAN" message will be printed in an output field. This means a value of infinity was computed. Division by zero is usually due to a number being typed incorrectly, such as 0.0 for density on the Energy Equation page.


Copyright

All of our web pages and programs/calculations are copyrighted. This means that the .asf, .htm, .html, .shtml, .php, .GIF, .jpg, and .exe files are the property of LMNO Engineering, Research, and Software, Ltd., and you cannot modify, copy, or redistribute them for profit or not for profit without our permission. This limitation, of course, does not apply to the web page output (what you see on the screen). You may print out or copy/paste any of the screens on our website so long as you include our copyright notices. This allows, for example, engineering consulting firms to include our web pages in their reports to clients. However, you may not put the images on another website. They are copyrighted and are not public domain.


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LMNO Engineering, Research, and Software, Ltd.
7860 Angel Ridge Rd.   Athens, Ohio  45701  USA   Phone: (740) 707‑2614
LMNO@LMNOeng.com    https://www.LMNOeng.com