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AssigneesCenter National de la Recherche Scientifique (CNRS), Universite De Poitiers
InventorsEric Foucault, Philippe Szeger, Janick Laumonier, Philippe Micheau
Estimating the term…
The invention makes it possible to measure, in real time, the flow of a fluid that is incompressible while having an unsteady flow. The pressure measuring system is primarily comprised of a negative-pressure element (1) placed within the flow and provided with two wall pressure taps (A, B). A means (2) for measuring a pressure difference connected to the pressure taps (A, B) enables the following formula to be solved: dq(t)/dt+α(q(t))=βX×Δp(t) directly stemming from fundamental equations of fluid mechanics and/or: Δp(t) represents the pressure difference measured by the sensor; q(t) represents the sought volume flow rate, and; α represents a function of the geometry of the negative-pressure element, of the fluid and of the flow q(t), the particularity of this formula being the consideration of the direction of flow in the second term of the left member of the formula.
A system for the measurement, in real time, of the instantaneous flow of a fluid in steady or unsteady motion in a conduit, characterised in that it includes:
A process for measuring the flow of a fluid in steady or unsteady motion in a conduit, characterised in that it includes the following stages:
Dependencies are inferred from the claim text.