Restrict_Ori
Restriction Orifice
$6.99
3.2for iPhone, iPad and more
Age Rating
Restrict_Ori Screenshots
About Restrict_Ori
Restrict-Ori calculates gas and liquid restriction orifice sizes and flowrates based on R. W. Miller's "Flow Measurement Engineering Handbook".
For gases this means that sonic velocity (critical flow) exists at the orifice throat, and further decrease in the downstream pressure will not increase the mass flow rate.
For liquids, choked flow occurs when the orifice decreases the downstream pressure to below the liquid vapor pressure, at that point the liquid will partially flash into bubbles of vapor. If vapor pressure is less than downstream pressure (non-choked flow), the pressure drop is calculated based on empirical equations used for control valves.
For gases this means that sonic velocity (critical flow) exists at the orifice throat, and further decrease in the downstream pressure will not increase the mass flow rate.
For liquids, choked flow occurs when the orifice decreases the downstream pressure to below the liquid vapor pressure, at that point the liquid will partially flash into bubbles of vapor. If vapor pressure is less than downstream pressure (non-choked flow), the pressure drop is calculated based on empirical equations used for control valves.
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What's New in the Latest Version 3.2
Last updated on Mar 8, 2022
Old Versions
Updated to IOS 15.
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Version History
3.2
Mar 8, 2022
Updated to IOS 15.
3.1
Feb 12, 2021
Upgraded to latest IOS-version
Added 'Share' button to enable sharing, saving, printing of results
Changed color-scheme to work in Dark Mode
Updated layout and fonts to work better with iPads (better layout/larger fonts)
Added 'Share' button to enable sharing, saving, printing of results
Changed color-scheme to work in Dark Mode
Updated layout and fonts to work better with iPads (better layout/larger fonts)
2.0
May 19, 2019
Updated version includes liquid calculations (Crude Oil, Water, Methanol, MEG, DEG and TEG) in addition to gases (Natural Gas, Nitrogen and Air).
Bug fixes.
Bug fixes.
1.0
Apr 20, 2018
Restrict_Ori FAQ
Click here to learn how to download Restrict_Ori in restricted country or region.
Check the following list to see the minimum requirements of Restrict_Ori.
iPhone
Requires iOS 12.1 or later.
iPad
Requires iPadOS 12.1 or later.
iPod touch
Requires iOS 12.1 or later.
Restrict_Ori supports English