Abstract According to the deficiency that the parameters cant be singly controlled in the traditional experiment, a 3D rotating model of 1000MPa simple piston gauge has been established to probe the effects of fluid viscosity, piston rod modulus and piston-cylinder gap on the pressure reproduction of piston gauge based on two-way fluid-structure interaction technique. The results show that the pressure distribution along the piston-cylinder gap from the inlet to the outlet generally experiences first approximate-linear decrease of pressure with the quick decline down to 30% of the balance pressure, then through a small pressure fluctuation, and finally approximate-linear slow decrease of pressure till to zero. The piston rod shrinkage decreases due to the increase of the elastic modulus of piston rod, the decrease of the fluid viscosity and piston-cylinder gap, while the effective area of the piston gauge increases due to the increase of the elastic modulus, the fluid viscosity, and the decrease of the piston-cylinder gap. Moreover, the effective area increases approximately 1.3% in maximum when the fluid viscosity doubles, which affects on the effective area of piston gauge most, while the effective area increases less than 0.04% in maximum when the elastic modulus of piston rod increases 10 times, which affects on the effective area least.
ZHANG Zhong-li,WANG Can,LIN Zheng-hao, et al. Research of Piston Gauge Based on Two-way Fluid-structure Interaction Technique[J]. Acta Metrologica Sinica, 2021, 42(3): 276-281.
［1］JJG 59—2007 活塞式压力计［S］. 2007.
［2］Singh J, Kumaraswamidhas L A, Sharma N D. A comparative investigation of pressure distortion coefficient of a pneumatic piston gauge and its associated uncertainty using varied approaches ［J］. Accreditation and Quality Assurance, 2019, 24 (2): 105-112.
［3］李海兵. 活塞式压力计检定过程中若干问题的讨论 ［J］. 计量技术, 2018(1): 46-48.
［4］杨远超. 活塞压力计自动化校准方法研究 ［J］. 计量学报, 2017, 38 (6):708-712.
Yang Y C. Research on Automated Calibration Method for Piston Gauges ［J］. Acta Metrologica Sinica, 2017, 38 (6): 708-712.
［5］顾世杰, 王鲁, 刘鉴学, 等. 1500MPa可控间隙活塞式压力计研究 ［J］. 计量学报, 2008, 29 (1):54-59.
Gu S J, Wang L, Liu J X, et al. A Study of Controlled-clearance Deadweight Piston Gauge for Pressure up to 1500MPa ［J］. Acta Metrologica Sinica, 2008, 29 (1): 54-59.
［6］张忠立, 徐子翼, 倪玉山, 等. 基于动网格技术的正弦压力研究 ［J］. 计量学报, 2020, 41 (1): 67-72.
Zhang Z L, Xu Z Y, Ni Y S, et al. Sinusoidal Pressure Research Based on Dynamic Mesh Technique ［J］. Acta Metrologica Sinica, 2020, 41 (1): 67-72.
［7］魏轲, 苏中地. 冷却塔消声器阻力特性研究 ［J］. 中国计量大学学报, 2019, 30 (1):38-43+50.
Wei K, Su Z D. Study on resistance characteristics ofcooling tower mufflers ［J］. Journal of China University of Metrology, 2019, 30 (1): 38-43+50.
［8］杜胜雪, 孔令富, 李英伟. 电磁流量计矩形与鞍状线圈磁场的数值仿真［J］. 计量学报,2016,37(1):38-42.
Du S X, Kong L F, Li Y W. Numerical simulation of the magnetic field of rectangular and saddle coils in electro-magnetic flowmeter ［J］. Acta Metrologica Sinica, 2016, 37 (1): 38-42.
［9］Esward T, Yagmur L, Buonanno G, et al. Finite element method used for calculation of the distortion coefficient and associated uncertainty of a PTB 1GPa pressure balance-EUROMET project 463 ［J］. Metrologia, 2006, 43 (3): 311-325.
［10］Giovinco G, Prazak D, Priruenrom T, et al. FEA calculation of pressure distortion coefficients of gasop-erated pressure balances-EURAMET project 1039 ［J］. Measurement, 2012, 45 (10): 2464-2468.
［11］宋学官, 蔡林, 张华. ANSYS流固耦合分析与工程实例 ［M］. 北京: 中国水利水电出版社, 2012.
［12］金连根, 毛建生, 方兵, 混流式水轮机转轮流场单向、 双向流固耦合数值的分析比较研究 ［J］. 机电工程, 2014, 31(12): 1564-1568.
Jin L G, Mao J S, Fang B. Comparison between one-way and two-way FSI numerical analysis of francis turbine runner ［J］. Journal of Mechanical & Electrical Engineering, 2014, 31 (12):1564-1568.
2021, Vol. 42 
