Comparing pressure losses in compressible flow between air and natural gas

In summary, the person has experimental data measuring losses across an obstruction in compressible flow using air. They are wondering if it is possible to transform the data for use with natural gas instead. This may be achievable through dimensional analysis and making reasonable assumptions.
  • #1
kayjaygee_13
5
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Hi! I have experimental data measuring losses across an obstruction in compressible flow which basically consists of static pressure, total pressure and total temperature upstream of the obstruction and the same variables downstream for a number of different mass flow rates. This data was collected using air. Now I was wondering if it was possible, using theory and some reasonable assumptions to transform the data so that it would be applicable if natural gas was being used instead of air. Thank you in advance.
 
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  • #2
kayjaygee_13 said:
Hi! I have experimental data measuring losses across an obstruction in compressible flow which basically consists of static pressure, total pressure and total temperature upstream of the obstruction and the same variables downstream for a number of different mass flow rates. This data was collected using air. Now I was wondering if it was possible, using theory and some reasonable assumptions to transform the data so that it would be applicable if natural gas was being used instead of air. Thank you in advance.
This can probably done using dimensional analysis.
 

1. What is compressible flow?

Compressible flow refers to the movement of a fluid, such as air or natural gas, in which the density of the fluid changes due to variations in pressure and temperature.

2. How do pressure losses differ between air and natural gas in compressible flow?

The pressure losses in compressible flow depend on the properties of the fluid, such as its density, viscosity, and compressibility. Air and natural gas have different properties, so their pressure losses will vary.

3. Can you explain the factors that affect pressure losses in compressible flow?

The main factors that affect pressure losses in compressible flow are the velocity of the fluid, the length of the pipe or conduit, and the roughness of the walls. Other factors include the fluid's properties, such as density and viscosity, as well as any changes in elevation or direction of flow.

4. Is there a significant difference in pressure losses between air and natural gas in compressible flow?

Yes, there can be a significant difference in pressure losses between air and natural gas in compressible flow. This is due to the different properties of the two fluids, such as their density, viscosity, and compressibility.

5. How can comparing pressure losses in compressible flow between air and natural gas be useful?

Comparing pressure losses in compressible flow between air and natural gas can be useful for engineers and scientists in various industries, such as aerospace, energy, and HVAC. It can help them design more efficient systems and select the appropriate fluid for their specific needs. It can also aid in troubleshooting and identifying potential problems in existing systems.

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