Title :
Microscale flow visualization and its density measurement with the aid of a laser-induced-fluorescence technique
Author :
Kato, Seizo ; Kitayama, Naoki ; Fujimoto, Tetsuo
Author_Institution :
Dept. of Mech. Eng., Mie Univ., Japan
fDate :
28 Oct-1 Nov 1991
Abstract :
A laser-induced-fluorescence (LIF) technique is applied to the flow visualization of microscale supersonic free jets, chosen as typical microscale heat and fluid flows encountered often in high technology, and also to the quantitative measurement of density from the detected LIF intensity. The entire flowfield visualization of the microscale jets seeded with iodine molecules radiating fluorescence induced by an argon ion laser is realized well enough to recognize in detail the three-dimensional fine flow structure. Simple theoretical relationships based on quantum electronics are derived to estimate the quantitative density from the detected LIF intensity induced by multi- and single-mode laser light, and the agreement between the theoretical relationship and experimental results is fairly good
Keywords :
argon; density measurement; flow visualisation; iodine; ion lasers; jets; laser beam applications; molecular fluorescence; rarefied fluid dynamics; supersonic flow; Ar ion laser; I2; density measurement; flow visualization; laser-induced-fluorescence; microscale supersonic free jets; multi-mode laser; quantitative density; quantum electronics; single-mode laser; three-dimensional fine flow structure; Argon; Chemical lasers; Density measurement; Fluid flow; Fluid flow measurement; Fluorescence; Gas lasers; Laser theory; Quantum well lasers; Visualization;
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1991. Proceedings. IECON '91., 1991 International Conference on
Conference_Location :
Kobe
Print_ISBN :
0-87942-688-8
DOI :
10.1109/IECON.1991.238961