The Analysis of Field Characteristics and Measurement for Centrifugal Fan and 90° Bend Pipe


Article Preview

The flow in centrifugal fan and 90° bend pipe was simulated numerically by the RNG k-turbulent model in software Fluent, and obtained the distribution diagram of the pressure and velocity. From the distribution diagram of the pressure and velocity, for measurement, three measurement points must be chosen, and two of them should be closed to the wall of pipe. However, in order to insure the measure accuracy, five or six measure points should be chosen. In addition, the velocity distribution of pipe bending reaches well-distibuted at the 1000 mm away from pipe exports. That is fluid flowing after through the flow field of bending section tends to uniform soon, so for the greater curvature bend pipe, measurement is more convenient.



Edited by:

Fangping Zhang




L. Y. Ran et al., "The Analysis of Field Characteristics and Measurement for Centrifugal Fan and 90° Bend Pipe", Applied Mechanics and Materials, Vol. 628, pp. 266-269, 2014

Online since:

September 2014




* - Corresponding Author

[1] DEAN W R, Note on the motion of fluid in a curved pipe, J. Phil Mag, 1927, 4(2): 223-238.

[2] AZZOLA J, Developing turbulent flow in a U-bend of circular cross-section, J. Measurement and Computation Trans ASME, J of Fluids Eng, 1986, 108: 214-221.


[3] Dewang Liang, Guoqing Wang, Bing Lv. 90° bend pipe flow numerical simulation at low speed and high turbulence. Journal of Nanjing University of Aeronautics and Astronautics, 2000, 32(4): 381-387, In Chinese.

[4] Shaobo Gui, Shuliang Cao. Internal flow field numerical simulation of 90° bend pipe based on the SMAC, J. Journal of Jiangsu University (natural science edition), 2008, 29(6): 507-511, In Chinese.

[5] Liang Dong, Houlin Liu, Cui Dai, Hui Du. Application of different turbulence models in the 90° bend pipe numerical simulation, J. Journal of Huazhong University of Science and Technology(natural science edition), 2012, 40(12): 18-22, In Chinese.

[6] TAYLOR A M K P, WHITELAW J H, YIANNESKIS M. Curved ducts with strong secondary motion: velocity measurements of developing laminar and turbulent flow, J. Journal of Fluids Engineering, 1982(104): 350-359.


[7] Caifen Ma, Feng Shi, Zhong Xu. The experimental research on the turbulent flow in the 90° bend pipe, J. Journal of Engineering Thermophysics, 1990, 2(11): 37-39, In Chinese.

[8] SUDO K, SUMIDA M, HIBARA H. Experimental investigation on turbulent flow in a circular sectioned 90-degree bend, J. Experiments in Fluids, 1988(25): 42-49.


[9] Jue Ding, Peifen Weng. Three kinds of turbulence model to simulate the right-angle bend pipe three dimensional flow separation, J. Chinese Journal of Computational Physics, 2003, 20(5): 386-390, In Chinese.

[10] Hongming Fan, Mingda Zhang, Yaohua Zhao, Jiapeng Hu. Flow numerical simulation in the 90° bend pipe, J. Journal of Beijing University of Technology, 2007, 33(2): 174-177, In Chinese.

[11] Shan Jiang, Jingwei Zhang, Chongjian Wu, Qing Xu, Wenbo Peng. Flow field analysis based on Fluent in the internal of 90° circular bend pipe, J. Chinese Journal of Ship Research, 2008, 3(1): 37-41, In Chinese.

[12] Yezhi Sun, Shougen Hu, Jun Zhao, Zhigang Zhong. Numerical Study on Flow Characteristic of 90° bend pipe under different reynolds number, J. University of Shanghai for Science and Technology, 2010, 32(6): 525-529, In Chinese.