- #1

freddie_mclair

- 35

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- TL;DR Summary
- I have pressure drop measurements at a certain temperature. How can I scale it to other temperatures?

Hi,

I have some measurements for pressure drop of Helium at room temperature and I would like to scale it to other temperatures. Taking into account that, i) the flow is turbulent, ii) the pressure drop, ##\Delta p##, happens always in the same piping and iii) there is only variation on the temperature of the fluid, woud it be sufficient to do:

##\Delta p_T = \Delta p_{RT} \frac{\rho_{RT}}{\rho_T}##

Where ##\rho## is the density and the subscripts RT is for room temperature and T is for other temperature. I can get ##\rho(T)## from thermodynamic tables.

Thanks!

I have some measurements for pressure drop of Helium at room temperature and I would like to scale it to other temperatures. Taking into account that, i) the flow is turbulent, ii) the pressure drop, ##\Delta p##, happens always in the same piping and iii) there is only variation on the temperature of the fluid, woud it be sufficient to do:

##\Delta p_T = \Delta p_{RT} \frac{\rho_{RT}}{\rho_T}##

Where ##\rho## is the density and the subscripts RT is for room temperature and T is for other temperature. I can get ##\rho(T)## from thermodynamic tables.

Thanks!