Application of Sonic Nozzle in Unsteady Flow Rate Generating System for Compressible Fluid

Abstract:

To meet the requirement of unsteady flow rate generating system for compressible fluid, an inlet flow rate control method with sonic nozzle is proposed. When inlet flow rate is known, feedback of unsteady flow rate can be obtained by an isothermal tank. A proper sonic nozzle is designed according to the technical requirements, and the flow rate is calculated. Open loop experiments are carried out on generating system with and without sonic nozzle. The results indicate that influence of downstream on upstream can be greatly reduced by the designed sonic nozzle, and accurate feedback of unsteady flow rate is ensured.

• Periodical: Applied Mechanics and Materials (Volumes 496-500)
• Pages: 703-706
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.496-500.703
• Online since: January 2014
• Authors: Xiao Xin Wang*, Tao Wang, Jun Zheng Wang
• Keywords: Compressible Fluid, Sonic Nozzle, Unsteady Flow Rate

References

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[3] WANG Tao, WANG Xiaoxin, PENG Guangzheng, Design of gas unsteady flow rate generator with flow rate feedback, China Instrument Society 11th Youth Conference, (2009).

[4] ISO 9300-2005, Measurement of gas flow by means of critical flow venturi nozzles, Beijing, Standards Press of China, (2005).

DOI: 10.3403/30414574