Open AccessResearch on the Method of Improving the Flow Field Quality in the Elbow of the Water Flow Standard Device Based on the CFD Numerical Calculation Method
Author(s) -
Haiyang Li,
Xuejing Li,
Ping Zhang,
Yiping Liu,
Yao Xin-hong,
Jinming Zhang
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1600/1/012043
Subject(s) - flow (mathematics) , elbow , vortex , mechanics , computational fluid dynamics , turbulence , field (mathematics) , simulation , computer science , mechanical engineering , engineering , mathematics , physics , surgery , medicine , pure mathematics
To solve the problems of secondary flow, turbulent vortex, and instability of the flow field in the elbow of the water flow standard device, some 3D geometric models of the elbow were established, and the flow field numeral calculations of the elbows were carried out based on the 3D models. The study shows that appropriately increasing the turning angle and the number of deflectors has a significant effect on improving the flow field quality in the elbow. While it is not obvious that the effect of increasing the thickness of the deflector on the flow field quality, and which may increase the requirements for the power source of the standard device. It is concluded that the elbow with a 135°turning angle and 2 pieces deflectors may be the optimal choice.