JPS56140214A - Flow measurement using supersonic flow meter - Google Patents

Flow measurement using supersonic flow meter

Info

Publication number
JPS56140214A
JPS56140214A JP4115980A JP4115980A JPS56140214A JP S56140214 A JPS56140214 A JP S56140214A JP 4115980 A JP4115980 A JP 4115980A JP 4115980 A JP4115980 A JP 4115980A JP S56140214 A JPS56140214 A JP S56140214A
Authority
JP
Japan
Prior art keywords
flow
relationship
dynamic viscosity
supersonic
flow velocity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4115980A
Other languages
Japanese (ja)
Inventor
Sakae Tezuka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP4115980A priority Critical patent/JPS56140214A/en
Publication of JPS56140214A publication Critical patent/JPS56140214A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Flowmeters (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To obtain a flow value with high precision by obtaining a dynamic viscosity factor based on a relationship between a measured temperature and a dynamic viscosity factor and computing Reynolds number and a flow distribution through combination of data on the tubular diameter of a conduit passage for a fluid and data obtained from a supersonic flow meter. CONSTITUTION:A reception frequency difference DELTAf attributable to a flow velocity u(r) is computed by means of supersonic transmitter/receivers 2A and 2B provided at two points on a conduit wall in such manner that the tubular axis 4 and angle theta of a wave conduction channel 1 having a cross-section shape which allows the formation of a function f(r,Re) of Reynolds number Re and a radius r by a flow velocity distribution. Then nu is calculated based on the already obtained relationship between temperature gamma and dynamic viscosity factor nu and thereafter, Re is obtained based on the relationship of said nu and tubular diameter r0. Following this procedure, the maximum value nmax of flow velocity is obtained based on the relationship between f(r,Re) and Q, r obtained by substituting the afore-mentioned distribution function with Re and DELTAf. The afore- mentioned process is repeated a few times sequentially and the final value of the repeated process values is introduced into the formula (1) of a flow Q as a substitute. In calculating Q, a memory unit and an arithmetic unit provided at the latter stage of a flow meter are used. As a result, it is possible to obtain a flow value with less error under no temperature influence.
JP4115980A 1980-04-01 1980-04-01 Flow measurement using supersonic flow meter Pending JPS56140214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4115980A JPS56140214A (en) 1980-04-01 1980-04-01 Flow measurement using supersonic flow meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4115980A JPS56140214A (en) 1980-04-01 1980-04-01 Flow measurement using supersonic flow meter

Publications (1)

Publication Number Publication Date
JPS56140214A true JPS56140214A (en) 1981-11-02

Family

ID=12600633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4115980A Pending JPS56140214A (en) 1980-04-01 1980-04-01 Flow measurement using supersonic flow meter

Country Status (1)

Country Link
JP (1) JPS56140214A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007051913A (en) * 2005-08-17 2007-03-01 Tokyo Keiso Co Ltd Correction method for ultrasonic flowmeter
DE102011080365A1 (en) * 2011-08-03 2013-02-07 Endress + Hauser Flowtec Ag Method for determining the flow by means of ultrasound

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007051913A (en) * 2005-08-17 2007-03-01 Tokyo Keiso Co Ltd Correction method for ultrasonic flowmeter
DE102011080365A1 (en) * 2011-08-03 2013-02-07 Endress + Hauser Flowtec Ag Method for determining the flow by means of ultrasound
WO2013017447A1 (en) 2011-08-03 2013-02-07 Endress+Hauser Flowtec Ag Method for determining the flow rate using ultrasound

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