# orifice

1. ### Modelling 2phased expansion valve

Hello, I am currently trying to model a 2phased expansion valve in Simscape (matlab - simulink). They already have a Variable Local Restriction for a 2Phased model (https://nl.mathworks.com/help/physmod/simscape/ref/variablelocalrestriction2p.html) which I would like to use for my model...
2. ### Calculate sound generated from orifice flow

Hi, I need help to calculate the sound which is generated as the fluid is flowing through the pipe connecting the two reservoir. (the flow direction is 1-2-3) I know every parameters in the system. What will I get if I multiply Q*deltaP? By dimensional analyses, this will give me J/s...
3. ### pressure drop through orifice? Please help!

I am trying to determine the orifice diameter for a pressure drop through an orifice. The pressure before the orifice is 10 cmH2O, the set pressure after the orifice is 8 cmH2O. There is a flow rate or air through the pipe of 25 L/min. Hoping picture helps illustrate the question Pressure drop...
4. ### Effect of orifice diameter on force of water jet

Just realised I posted this in the high school section. (While the question is quite basic, I thought due to the practical application, it might be better here) I am working on a job in wastewater treatment which involves rotary arms which distributes water onto filter media (Trickling...
5. ### Orifice water flow rates

Hello I have a problem that hopefully someone can help me with. I need to work out the detention time of a pond as it drains from a snorkel. The problem is I have multiple draining holes in the snorkel at different heights which will obviously have different flow rates as water level changes...
6. ### Coefficient of velocity

Hi there! I have done an experiment to calculate the coefficient of velocity of a jet flow through an orifice, and I got results with an interesting pattern. So I have done the experiment with two different heads and orifice sizes and got the following results for the coefficient of velocity...