Patent ID: 11885652
Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A fluid flow velocity measurement apparatus, comprising:
a flexible tube having an open end in fluid communication with a plurality of fluid outlets of a microchannel flow structure, each of the plurality of fluid outlets having a cross section defining an outlet area, the open end having a cross section defining a flexible tube area that is larger than the outlet area of each fluid outlet;
a pressure transducer tuned to measure fluid speeds having a Reynolds number less than 100 and having an inlet fluidly coupled to the flexible tube such that fluid flowing from the plurality of fluid outlets are captured by the pressure transducer and a signal corresponding to a pressure of the fluid is generated; and
a controller configured to receive an experimental pressure value generated as a result of the signal generated by the pressure transducer, determine an aggregated average differential pressure of the fluid, and calculate a corrected flow velocity of the fluid based on the aggregated average differential pressure by:
determining a fluid velocity of the fluid at an outlet measuring portion,
applying Bernoulli's equation using a model pressure to determine a calculated velocity,
determining a correction factor based on the fluid velocity and the calculated velocity, and
applying the correction factor to the experimental pressure value.