AR60-F10E-Y is the precise model which has an identical characteristic curve to the one shown in the diagram. I get an inlet area of 3.14 x 10^-4 m2 for a pipe RADIUS of 10mm and the slot area is 2.9 x 10^-4 m2. I don't currently have any means of measuring the inlet pressure when flowing. The...
Hi
I have uploaded a diagram. The flow rate was calculated using the compressible mass flow equation at the nozzle exit (it is a convergent nozzle). Assuming the temperature is 293K I calculated density using the ideal gas law and then converted the mass flow rate into a volumetric flow rate...
Hi,
I have a workbench test set up which consists of a compressor, followed by a 6bar supply line, followed by a regulator (for bringing the pressure down to 2bar) followed by a plenum chamber that leads to a slot that vents to atmospheric. The slot is approximately the same area as the supply...
I was thinking that there may be some standard somewhere the defines a maximum flow speed for high pressure pneumatic aerospace systems; are there any standards that exist for high pressure pneumatic systems that cover internal pipe flow Mach number? Specifically I'm thinking about fluidic...
Hi,
No I meant do they size the pipes to limit the maximum pipe flow Mach number in the pipe? E.g. the pipe diameter is changed to ensure the maximum pipe Mach number is 0.6. However, in the case you just mentioned, would the flow rate not equal zero if the pipe is long enough for unity to be...
Hi,
Are pipe flows in pneumatic aerospace systems limited to certain Mach numbers? If so, what are the reasons for this? Are there any issues associated with high pipe Mach numbers? - damage from shocks in the pipe?
Any info is much appreciated.
Kind Regards
James
I am trying to calculate the friction factor for a Fanno flow in a constant area duct. I know the friction factor is based on Reynolds number however does the Reynolds number not vary along the pipe due to a change in dynamic viscosity? (caused by a decrease in temperature along the pipe). And...
I am currently designing a convergent nozzle for use in experiments and wanted to check something:
Will the pressure and density of the flow always expand to ambient (following the isentropic relations) when it reaches the nozzle exit regardless of nozzle contraction ratio and length?
Any help...
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I am currently researching methods available for manufacturing a half-span wing model (approx 0.5m span, low sweep delta wing of varying cross section) to be used in wind tunnel experiments. A recent paper suggested the use of epoxy and micro glass beads injected into an aluminium mold for...
