Screw Compressors- Mathematical Modelling And Performance Calculation [Windows]

Screw Compressors: Mathematical Modelling and Performance Calculation Nikola Stosic, Ian K. Smith, and Ahmed Kovacevic

Numerical Methods

• Suction Phase: Pressure remains approximately constant as volume increases.
• Compression Phase: Volume decreases, pressure rises.
• Discharge Phase: Gas is pushed out at constant pressure.

[ \fracd(mu)d\theta = \dotm in \cdot h in - \dotm out \cdot h out + \dotQ \cdot \fracdtd\theta - p \fracdVd\theta ] [ \fracd(mu)d\theta = \dotm in \cdot h in

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Elias began where all screw compressors do: the . He typed out the equations for the "Male" and "Female" lobes, ensuring their cycloidal curves met with surgical precision. If the blow-hole area —that tiny, traitorous gap where high-pressure air leaks back to the suction side—wasn't modeled perfectly, the entire machine would lose its lungs. Ian K. Smith