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Measured data visualisation

If a flow field is minutely measured with a Pitot tube, hot-wire anemometer, laser Doppler velocimeter, pressure gauge, thermometer, etc., such results can be processed by computer, and thus the phenomena are visualised as images.pressure-sensitive light-emitting diodes are placed transversely. The total pressure pattern of a wake of an aircraft wing is then obtained by photographing the diode emissions, whose colours change with total pre~sure.’~ shows the measured result of the flow velocity in the area behind a model passenger car obtained using a three-dimensional laser Doppler velocimeter, presented as a velocity vector diagram.”the acoustic power flow from a cello is visualised by the acoustic intensity method. The size and direction of the energy flow at each point is obtained through a computational process from the cross-vector of the sonic pressure signal on a microphone.26