A mathematical model of the self-averaging Pitot tube - A mathematical model of a flow sensor

被引：22

作者：

Dobrowolski, B ^{[1
]}

Kabacinski, M ^{[1
]}

Pospolita, J ^{[1
]}

机构：

[1] Tech Univ Opole, Chair Thermal Engn & Automat Control, PL-45233 Opole, Poland

来源：

FLOW MEASUREMENT AND INSTRUMENTATION | 2005年 / 16卷 / 04期

关键词：

flow measurements; mathematical modelling; numerical methods;

D O I：

10.1016/j.flowmeasinst.2005.02.001

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Flowmeters with self-averaging Pilot tubes are more and more often applied in practice. Their advantages are practically no additional flow losses, usability in the case of high temperature of fluids and simplicity of fitting. A mathematical model of a self-averaging Pilot tube including the influence of the probe shape, selected constructional features and flow conditions on the quantity of differential pressure gained has been given in this paper. The values and ranges of variations of the coefficients established for the model have been assessed on the basis of the numerically computed velocity and pressure fields around and inside the probe. Velocity and pressure fields were calculated by means of solving conservation equation and turbulence models. The characteristics linking values of the flow coefficient with values of the Reynolds number have been presented. The conclusions have been formulated taking flow metrology needs into account. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：251 / 265

页数：15

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