Questions tagged [compressible-flow]

The tag has no usage guidance.

6 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
2 votes
0 answers
64 views

How to balance flow and pressure in nitrogen purged chambers?

I have an instrument that is technically a humidity controlled chamber. It measures how much moisture is picked up by the sample through a microbalance(Zone 1). Nitrogen gas flows from zone 3 and ...
user avatar
1 vote
0 answers
36 views

Confusion between Steady flow and Space-Time invariant density field

Let's take the example of a steady flow with velocity field as $u=βr(\tilde{r})$. Now, we can find a density field $ρ(r,t)$ that satisfies the mass conservation equation of $∂ρ/∂t+∇(ρu)=0$. First, ...
user avatar
1 vote
0 answers
42 views

Can any Air rotameter be used for refrigerant gas by using equation conversion?

Currently, I am trying to find rotameter calibrated for R134A gas flow. However, most companies only sell rotameter or variable area flowmeter for water/Air/Nitrogen flow. Is it possible to use any ...
user avatar
1 vote
0 answers
69 views

Water Valve Functionality

Before to present my question, I have to say that I'm not a hydraulic expert. I'm working on a water valve design and I found this model which work with a diaphragm and a spring. I want to consider ...
user avatar
0 votes
0 answers
25 views

Joule Thompson Effect and Isenthalpic Processes

We are trying to compute the Joule Thompson (JT) coefficient for air going through a valve from P1 to P2 (where P2 is a much lower pressure). Beginning this we were thinking that the water in the air ...
user avatar
  • 41
-1 votes
1 answer
120 views

Ideal Exhaust velocity of a rocket nozzle

In a youtube video, they defined exit exhaust velocity of a rocket nozzle as $$v_2 = \sqrt{\dfrac{2k}{k - 1}RT_1 \left[1 - \left(\dfrac{p_2}{p_1}\right)^{(k - 1) / k}\right]}$$ How can I derive this ...
user avatar
  • 1