Method and apparatus for determining fluid flow

Details Method and apparatus for determining fluid flow Method and apparatus for determining fluid flow

G - Physics

01

P

349/39

G01P 3/00 (2006.01) G01F 1/66 (2006.01)

Patent

CA 1142636

ABSTRACT OF THE DISCLOSURE A method and apparatus for determining volumetric fluid flow rate in an arbitrarily shaped fluid conveyance are disclosed. A plurality of functions, fj(p,mk) (where p is a position in the conveyance and mk depends upon the Reynolds number of the fluid flow), each function being approximately representative of the fluid flow velocity across the conveyance, are linearly combined to approximate the velocity, P(p), of the fluid flow at any point in a plane normal to fluid flow. The scalar constants Aj, k, of the linear combination Image , are estimated by solving a system of linear equations, Image in which acoustical measurements along the paths yi through the conveyance provide an estimate, ?meas(i), of the actual average velocity ?i at paths yi. The average fluid velocity and hence volumetric flow across the conveyance can then be determined by taking an area integral of the linear combination Image . - 1 -

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