High-speed PIV measurement of particle velocity near the minimum air velocity in a horizontal self-excited pneumatic conveying of using soft fins

Use of the PLIF and LIP methods for definition of non-stationary temperature fields of water droplets

“…The experiments with the use of PLIF and LIP (Fig.4) were performed in two stages: the first was the temperature calibration of the system (in the absence of a drop of water in the registration area), the second -the recording of the temperature fields of the evaporating droplet [4][5][6].…”

“…To avoid clumping of particles in the flow, they were first placed in a muffle furnace (at 100 °C) for 120 min (in accordance with the recommendations and conclusions [5,6]). As a fluorophore in the PLIF experiments, Rhodamine B was used [4].…”

“…As specialized tracers for flow in the LIP method, specialized phosphor particles of BaMgAl 10 O 17 :Eu powder (BAM: Eu) [5,6] were used, the particle sizes were 6-8 μm. To avoid clumping of particles in the flow, they were first placed in a muffle furnace (at 100 °C) for 120 min (in accordance with the recommendations and conclusions [5,6]).…”

“…The PLIF [4] and LIP [5,6] method was used to determine the instantaneous temperature distributions inside the water droplet and in the trace of the evaporating droplet. The schemes of the methods are shown in Fig.…”

“…To solve the previously identified problems and determine the temperature fields of the evaporating water droplets, it is expedient to use the methods of PLIF [4] and LIP [5,6], since it allows the recording of the temperature of liquid and gas media with high sampling in time and space with high sampling.…”