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Compressor Simulation
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Statistics
1 Geometry
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1 Simulation setup
34 Results
1 Geometry 0 Meshes 1 Simulation setup 34 ResultsAbout this project
Compressor Working Principle: A compressor increases the pressure of a gas by transferring mechanical energy to the fluid. Energy Transfer: A rotating component (like an impeller or rotor blades) accelerates the gas, converting mechanical work into kinetic energy (high velocity). Pressure Rise: The high-velocity gas then enters a stationary diffuser. This passage slows the flow down (deceleration), converting the kinetic energy into a significant increase in static pressure and temperature, following Bernoulli's principle. Discharge: The resulting high-pressure, high-temperature gas is then discharged. Simulation & Boundary Conditions: Compressor simulations use compressible solvers (like the Multipurpose solver) due to the high-speed flow and critical density changes. Inlet: Defined by Total Pressure and Total Temperature (or flow rate). Outlet: Defined by a pressure outlet or flow rate (if the inlet is pressure-conditioned). Rotating Speed: The RPM or rad/s of the impeller must be defined. CAD Model: The fluid domain is modeled as a single volume, with a separate overlapping volume defining the rotating region of the impeller. Key Performance Outputs: CFD simulations generate data crucial for building the compressor's performance map, which details its operating limits (surge and choke lines). Total Pressure Ratio: The primary measure of compression (outlet/inlet total pressure). Isentropic Efficiency: Measures how effectively the work input is converted into a pressure rise. Mass Flow Rate: The volume or mass of gas moved at an operating point. Shaft Power/Torque: The mechanical power needed to drive the compressor. Total Temperature Ratio: Represents the work input into the fluid.
