Flow rate discrepancy between upstream and downstream of orifice model.

2 次查看（过去 30 天）
Shunsuke
Shunsuke 2024-6-14
回答： Yifeng Tang 2024-6-19
I am verifying the flow rate before and after orifice model measured by "Flow Rate Sensor".
The target value of flow rate is 13.2 gpm with diffential pressure 2950 psid and orifice model of orifice area is set to get this flow rate.
Simulation Retuls of flow rate
Before orifice: 13.08 gpm
After orifice: 13.26 gpm
Is there any solution or what is the root cause of this discrepancy?
  1 个评论
Torsten
Torsten 2024-6-14
And you are confident there are clairvoyants in the forum that will be able to answer this with the information you gave ?

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Yifeng Tang
Yifeng Tang 2024-6-19
A diffential pressure 2950 psi sounds big enough to change the density of the fluid. As the density changes, volumetric flow rate can well be different. Mass flow rate should be conserved.
A few things to check:
(1) measure mass flow rate
(2) set up sensors to measure the density before and after the orifice.
(3) if you are using a fluid property block, right click and you can plot the fluid property. See if the density/bulk modulus varies for the pressure range in question.
(4) check with the source of that 13.2gpm reference data, at what condition was it measured. Was that before or after the orifice?

类别

在 Help Center 和 File Exchange 中查找有关 Upgrading Hydraulic Models to Use Isothermal Liquid Blocks 的更多信息

标签

产品


版本

R2024a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by