Development of a Gas Dynamic and Thermodynamic Simulation Model of the Lontra Blade Compressor?

9th International Conference on Compressors and their Systems

Karlovsky, Jerome^1

Lontra Ltd, Folly Lane, Napton on the Hill, Warwickshire

CV47 8NZ, United Kingdom^1

关键词: Correlation studies;    Design and development process;    Gas-dynamic effects;    Positive displacement;    Rotary compressors;    Running conditions;    Thermodynamic simulations;    Volumetric efficiency;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/90/1/012056/pdf
DOI  :  10.1088/1757-899X/90/1/012056

来源: IOP

【 摘 要 】

The Lontra Blade Compressor™ is a patented double acting, internally compressing, positive displacement rotary compressor of innovative design. The Blade Compressor is in production for waste-water treatment, and will soon be launched for a range of applications at higher pressure ratios. In order to aid the design and development process, a thermodynamic and gas dynamic simulation program has been written in house. The software has been successfully used to optimise geometries and running conditions of current designs, and is also being used to evaluate future designs for different applications and markets. The simulation code has three main elements. A positive displacement chamber model, a leakage model and a gas dynamic model to simulate gas flow through ports and to track pressure waves in the inlet and outlet pipes. All three of these models are interlinked in order to track mass and energy flows within the system. A correlation study has been carried out to verify the software. The main correlation markers used were mass flow, chamber pressure, pressure wave tracking in the outlet pipe, and volumetric efficiency. It will be shown that excellent correlation has been achieved between measured and simulated data. Mass flow predictions were to within 2% of measured data, and the timings and magnitudes of all major gas dynamic effects were well replicated. The simulation will be further developed in the near future to help with the optimisation of exhaust and inlet silencers.