The foundation of any screw compressor model is the mathematical definition of the rotor geometry.
The narrow radial gap between the rotor tips and the housing bore. The foundation of any screw compressor model is
Screw compressors are the workhorses of modern industrial compression, widely utilized in refrigeration, gas processing, and high-pressure air systems. Unlike reciprocating compressors that rely on pistons, twin-screw compressors utilize two meshing helical rotors to decrease the volume of a trapped gas, thereby raising its pressure. Optimizing these machines requires an intimate understanding of fluid dynamics, thermodynamics, and rotor geometry. This article explores the mathematical modeling and performance calculation techniques that engineers use to simulate, analyze, and optimize twin-screw compressors. 1. Geometric Modeling of Rotor Profiles 1.1 The Working Mechanism and Geometry
The primary goal of screw compressor modelling is to predict the flow rate, power consumption, and discharge temperature based on input parameters such as pressure, speed, and gas properties. Because screw compressors involve complex, unsteady-flow, three-dimensional geometry, modelling approaches usually start with one-dimensional (1D) thermodynamics to capture the fundamental behavior, followed by three-dimensional (3D) Computational Fluid Dynamics (CFD) for higher accuracy. 1.1 The Working Mechanism and Geometry and optimize twin-screw compressors.