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Abstract: With
setting different gas pressure in pipe, the pressure loss coefficient of
vortex street flowmeter is investigated in Fluid Lab, school of
Electrical Engineering and Automation, Tianjin University, China.
Results show that the change of gas pressure in pipe can affect the
pressure loss coefficient by processing a mass of experimental data.
When gas pressure in pipe is in-creased from 0.1 MPa to 1.1 MPa, the
pressure loss coefficient will decrease with the increasing of the gas
pressure and the amplitude of variation is 7%. This changing regularity
is studied and the equation which expresses the relation between the
pressure loss coefficient and gas pressure in pipe is given.
Key words: Gas pressure Vortex street flowmeter
Pressure loss Pressure loss coefficient
Differential pressure cell
CLC No: TH814
天津市自然科学基金资助项目(05YFJMJC11400). Received 20051127, received in revised form 20060404
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