Numerical Analysis of Fluid Solid Coupling in the Opening Process of A Hydraulic Control Check Valve Based on Fluent

Linfeng Zhang ； Dongsheng He ； Qianlong He ； Guangheng Zhou ； Tao Lv

《International Journal of Social Science and Education Research》 3卷4期 (2020/04) Pp. 38-51

https://doi.org/10.6918/IJOSSER.202004_3(4).0006

摘要

Based on the dynamic grid theory and the newly developed UDF program, a three-dimensional fluid structure coupling analysis model is established for the transient opening process of a micro hydraulic control check valve in the hydraulic signal decoder of the intelligent completion. The coupling dynamic response of the valve core under the action of high pressure oil and fluid is solved by using the fluent 6DOF method, and the valve is simulated under the action of micro hydraulic cylinder and high pressure fluid During the opening process, the detailed visualization flow field cloud chart of the check valve was obtained, including the small scale flow characteristics around the valve core. At the same time, the real-time monitoring and analysis of the movement process of the valve core were carried out, and the movement characteristic curve of the displacement and speed of the valve core was obtained. The results showed that the valve completed the opening process in 1ms, but the transient hydraulic power fluctuated greatly during the opening process. It was pointed out that the old UDF program can not study the vibration of the valve core. The reason why the speed is 0 after the valve core reaches the maximum opening is that the hydraulic cylinder thrust is greater than the fluid force. The UDF program can not be used to force the valve core to reach the speed 0 after the limit displacement. At the same time, the feasibility and reliability of using micro hydraulic cylinder check valve system as the basic control unit of decoder are verified. The newly developed UDF is more suitable for studying the vibration of valve core.

關鍵字

Completion decoder ； check valve ； dynamic mesh ； CFD ； Fluent UDF

參考文獻

Hodges S, Olin G, Sides W. Hydraulically-Actuated Intelligent Completions: Development and Applications[M]. Houston, Texas: Offshore Technology Conference, 2000,3(01603663): 199-214.

Alberto M B, Jesús Manuel F O, Andrés M. Numerical methodology for the CFD simulation of diaphragm volumetric pumps[J]. International Journal of Mechanical Sciences. 2019,150(0020-7403): 322-336.

Menéndez-Blanco A, Fernández Oro J M, Meana-Fernández A. Unsteady three-dimensional modeling of the Fluid–Structure Interaction in the check valves of diaphragm volumetric pumps[J]. Journal of Fluids and Structures. 2019, 90(0889-9746): 432-449.

Qian J, Wei L, Jin Z, et al. CFD analysis on the dynamic flow characteristics of the pilot-control globe valve[J]. Energy Conversion and Management. 2014, 87(0196-8904): 220-226.

Lisowski E, Czyżycki W, Rajda J. Three dimensional CFD analysis and experimental test of flow force acting on the spool of solenoid operated directional control valve[J]. Energy Conversion and Management. 2013, 70(0196-8904): 220-229.