Method and device for determining the instantaneous mass flow of pulsating flows

US7881885B2 · kind B2 · utility

Inventors

• Buelent Uensal · Erlangen, DE
• Dimosthenis Trimis · Erlangen, DE
• Franz Durst · Langensendelbach, DE

Key dates

• Filing date: Jun 16, 2006
• Grant date: Feb 1, 2011
• Expiry date: Jun 13, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F1/72
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a method for determining the instantaneous rate of the mass flow of a flow of a fluid pulsating periodically at a frequency f, said method comprising the following steps: a) a pressure gradient in the flow over a certain period (P) is determined, b) the harmonic amplitude of the pressure gradient is calculated by means of Fourier transformation, c) the frequency f and the time t are converted into dimensionless numbers F, t and d) the rate of the mass flow is determined using a table from which at least one corresponding value describing the mass flow rate and/or a phase difference can be deduced for each dimensionless number F of the frequency f.