Abstract
Optical fiber probing is one of the efficient and reliable measurement methods for gas-liquid two-phase flows. For practical measurement of fuel spray, we newly developed a Two-Tip Optical fiber Probe (T-TOP) and an Optical Fiber Probe micro-fabricated by femtosecond pulse laser (Fs-TOP). We demonstrate the simultaneous measurement of velocities and diameters of micro droplets using these probes; the results are compared with those obtained from the visualization of the droplets by using high-speed video cameras. In addition, we clarify the relation between the tip shape of Optical Fiber Probe (OFP) and its measurement accuracy.
