METHOD OF DETERMINING HEAT CARRIER SPEED AND DIRECTION Russian patent published in 2011 - IPC G01P5/14 G01P5/16 

FIELD: physics.

SUBSTANCE: multichannel perforated transducer is arranged at measurement point. Pressure differences ΔP_1-st, ΔP_2-st between pressures in transducer peroration are measured and static pressure on channel wall. Perforated holes are arranged in 120 degrees. Note here that said holes are inclined at 45 degrees to transducer axis. Defined are rates and angles of heat carrier leak-in on transducer using calibration relations in the form of Δ P_1-st =f(ΔP_2-st) Δ P_3-st =f(W), where Δ P_3-st is pressure difference between transducer hole perpendicular to transducer axis and static pressure on channel wall, W is local rate of heat carrier parallel with transducer axis. Calibration relations are derived on inclining transducer in plane through different angle δ and revolving it relative to axis through angles φ from 0 to 360 degrees, measuring pressure difference at each constant position of angle φ, repeating measurements at other rates and angle δ to define functional relation as closed curves between pressure differences plotted at constant flow rates and plane inclination δ=const.

EFFECT: higher accuracy of defining vector of rate.

9 dwg