Hi,
I'm trying to understand how previous editions of ISO 1101 specified the orientation of tolerance zones in the 2D case. Datum A indicates the center of the larger hole and both tolerance zones are parallel to it. Is B now the orientation plane? How does it constrain the tolerance zone...
Hello,
Axial flow machines (compressors, turbines, fans) may be designed for a number of vortex distributions such as free vortex and forced vortex. In "Fluid mechanics and thermodynamics of turbomachinery" by S. L. Dixon another distribution is suggested that results from a constant specific...
Hi,
I'm trying to scale up an existing air expansion turbine using similatiry laws, specifically getting the same non-dimension mass flow parameter for the scaled up turbine. I know various conditions for the existing turbine and the power requirement for the scaled up turbine.
01 = stagnation...
Hello,
I have the "Fan Handbook" by Frank P. Bleier. This book is ok as a primer but somewhat limited for detailed selection, let alone design.
If you have any book recommendations covering things like
-fan geometry beyond the outer diameter (number of blades, angle etc)
-the resulting...
Hello,
I'm writing some code to do rotor dynamic analysis(compressor trains). The rotor is read from a file and stiffness is calculated as follows:
k = G*I/(l/1000) # /1000 because input is in mm
But given the following rotor (all mm)
dia len
300 300
900 300
400 300
the calculated stiffness of...
Hi,
Background:
AGA PAR NX-19 is an equation of state applicable to some compositions of natural gas for estimating the compressibility z. The required input is:
p, T, mol% CO2, mol% N2 and d
where d is the density relative to air (I assume this is at 1 atm). d is often not known or at least...
