Zhou, A.P. (2000) Measurement and Analysis of Local Resistance during Sudden Expansion and Reduction of Overflow Section. Journal of Jiaozuo Institute of Technology (Science & Technology Edition), 19, 45-49.

has been cited by the following article:

• TITLE: Experimental Determination of Local Resistance Coefficient of Sudden Expansion Tube

  AUTHORS: Yinpeng Li, Changjin Wang, Mingda Ha

  KEYWORDS: Sudden Expansion Pipe, Frictional Head Loss, Loss Head Loss, Local Resistance Coefficient

  JOURNAL NAME: Energy and Power Engineering, Vol.7 No.4, April 28, 2015

  ABSTRACT: Theoretical derivation of local resistance coefficient of sudden expansion tube is presented. Several assumptions are analyzed in the theoretical derivation. That the head loss shall be neglected is affirmed. Experimental data proves that the pressure before and after sudden expansion section is basically the same. That the friction force on the side face of control body is neglected is denied and it is pointed out that such neglect is the main cause for error between theoretical calculation and actual measurement. Experimental device for measuring local resistance coefficient is designed in combination with theoretical derivation process. Optimal gradually varied flow section is selected after sudden expansion pipe in Bernoulli equation based on variation of piezometer tube head. It is pointed out in accordance with experimental data analysis that the value of local resistance coefficient of sudden expansion tube determined through experimental data is closer to the actual situation during pipeline design.