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http://dx.doi.org/10.5369/JSST.2018.27.6.386

Optimum Design of a Liquid Film Thickness Measurement Device Using Electric Conductance for Impingement Liquid Film  

Lee, Hyeongwon (Agency for Defense Development)
Lee, Hyunchang (School of Mechanical Engineering, Kyungnam University)
Kim, Taesung (Department of Aerospace Engineering, Seoul National University)
Ahn, Kyubok (School of Mechanical Engineering, Chungbuk National University)
Yoon, Youngbin (Institute of Advanced Aerospace Technology, Seoul National University)
Publication Information
Journal of Sensor Science and Technology / v.27, no.6, 2018 , pp. 386-391 More about this Journal
Abstract
To analyze the film cooling in a liquid rocket engine, it is necessary to understand the characteristics of the wall-impingement liquid film. We designed an optimal two-dimensional device for measuring the thickness of the liquid film thickness. This device quantitatively measures the liquid-film thickness distribution. In previous liquid-film thickness measuring devices, the liquid film was formed over the entire area of the sensor. However, its formation depended on injection conditions. To compensate for this, optimal resistors are selected. Additionally, saturation variations with partial saturation are analyzed. Furthermore, calibration using the enhanced plate method is conducted with improvements in spatial resolution. The device designed here can be used to analyze the properties of an impingement liquid film with a slit injector. This study can be used for film-cooling analysis in liquid rocket engines.
Keywords
Liquid film thickness; Electric conductance method; High speed wire-mesh method; Impingement liquid film;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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