# Calculate pressure at points before and after a pressure sensor

• 291 Views
• Last Post 06 March 2018
vighnesh posted this 01 March 2018

Description:

Let L be the length of a pipe
A be the initial point/inlet (liquid) point
O be the pressure sensor
a is the diameter of the pipe (here its 1inch)
Let O be placed at a distance d from A
P1* and P2* be the pressure of liquid before and after the sensor

*Distance of P1 and P2 must be equal to the diameter of pipe hole i.e P1=P2=0.4 inch

How can I calculate P1 and P2 at different distance 'd' of 'o' with different temperatures of liquid flowing through the pipe?

note:

Here diameter of the pipe is taken as 1 inch for the purpose of ease i.e length 0.3+0.4+0.3=1inch. It can be varied. Accordingly, sensor parameter is adjusted.

Attached Files

vganore posted this 01 March 2018

Here is the video showing how to calculate P1-P2. Are you trying to model something similar to this or just want to solve the problem numerically.

Vishal Ganore, ansys.com/student

• Liked by
vganore posted this 05 March 2018

Yes, you can solve this under fluent. I could guide you.

Here is what you can do:

1. Create 2D geometry. It will be a surface body. Simplified Schematic of geometry is given below:

2. Create mesh

3. Solve it in Fluent and calculate results.

Procedure is similar to this tutorial. Only difference is you have an orifice-meter instead of a nozzle.

Vishal Ganore, ansys.com/student

• Liked by
vighnesh posted this 03 March 2018

Thanks Vishal, That was really helpful. Actually, I'm trying to model this using ANSYS. Once I get the value of P1, P2 for varying value of d, temperature as well as the length of a hole present in a horizontal plate of a sensor ( in above attachment 0.4inch), I need to export these values to an excel file for my further analysis. Looking forward for your reply.

vighnesh posted this 06 March 2018

Thank Vishal..!!! This is what I was looking for. I will go through this and get back to you ASAP. Thanks alot..