Speaker
Mr
Kittisak Ketaiam
(Yupparaj Wittayalai School)
Description
Schlieren photography is a technique used to visualize density gradient of fluid medium, which is due to a linear relationship between fluid density and refractive indices. In this study, a single mirror off-axis schlieren system was employed to observe minimum temperature difference between room and heated object, vacuum flask.The tracker program was used in measuring relative light intensities. It was found that the minimum difference temperature observed was 0.9 $^o$C.The theoretical minimum air density gradient is 0.128 kg/m$^4$, while the observed one is 2.98 kg/m$^4$. When using fluid dynamics computer simulation, the location where the light intensity data was acquired, the air density gradient was 0.0682 kg/m$^4$.
Primary author
Mr
Kittisak Ketaiam
(Yupparaj Wittayalai School)
Co-authors
Dr
Nirut Pussadee
(Department of physics and materials science, Chiang Mai University)
Mrs
Nongluk Tongnopparat
(Department of physics and materials science, Chiang Mai University)
