13th European Conference on Turbomachinery Fluid dynamics & Thermodynamics

Paper ID:


Main Topic:

Basic phenomena



Lucian Hanimann - Lucerne University of Applied Sciences and Arts
Luca Mangani - Lucerne University of Applied Sciences and Arts
Ernesto Casartelli - Lucerne University of Applied Sciences and Arts
Damian Vogt - ITSM - Institute of Thermal Turbomachinery and Machinery Laboratory


Today’s most common standard for compressible computational fluid dynamics is based on the ideal gas state equation. However, real gas modeling is fundamental for a wide range of applications. When expanding into the thermodynamic region of non-ideal gas, performance predictions based on ideal gas assumption are no longer valid. Therefore, more accurate models are desired for an improved classification of fluid properties. While there is a wast amount of literature about possible improvements when using real gas state equations in a numerical framework, little is known considering the actual implementation. This article will therefore focus on the robust integration of real gas flow physics in an in-house, coupled, pressure-based solver. We will point out the main difference to a numerical framework purely based on perfect gas. Final validation is given using a two stage radial compressor setup to demonstrate the generality of the chosen approach.


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