Optical Velocity Measurement and Fluid Flow Visualization Techniques
Abstract
Numerous fluid flow phenomena intrigue researchers worldwide. Flow visualization usually precedes experimental research and gives insight in flow structures. It can be used to show how the fluid flows around the model, in jet, in closed systems, in turbomachinery, and etc. In numerous cases geometries are very complex and even some chemical reactions occur, but they are not treated here. Smoke, tufts, paints, sewing thread, smoke and tuft probes, are employed together with illumination systems, like LED lamps or lasers. With the laser development, a new era of fluid flow velocity measurement techniques started. Soon after laser invention, a laser Doppler velocimtery (LDV) is developed and applied in fluid mechanics. Non-intrusive era of fluid flow investigation has started. Various laser models, from continuum, and diode ones to impulse are widely used. Three component systems, even five beams probes, are employed today in complex researches. In-plane, stereoscopic, multi-plane stereos...copic, time-resolved, micro, holographic, scanning, tomographic and thermographic particle image velocimtery (PIV) have been used. In this case, besides illumination devices, contemporary applications employ fast cameras nowadays. Research of the turbulent swirling flow in pipe, behind the axial fan impeller, with the help of the LDV and PIV systems, as well as some results on wing tip vortex research in wind tunnel tests are presented.
Source:
International Symposium on Aircraft Technology, MRO & Operations ISATECH’22, 14-16. September 2022., Belgrade, 2022Note:
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Institution/Community
Mašinski fakultetTY - CONF AU - Čantrak, Đorđe PY - 2022 UR - https://machinery.mas.bg.ac.rs/handle/123456789/6813 AB - Numerous fluid flow phenomena intrigue researchers worldwide. Flow visualization usually precedes experimental research and gives insight in flow structures. It can be used to show how the fluid flows around the model, in jet, in closed systems, in turbomachinery, and etc. In numerous cases geometries are very complex and even some chemical reactions occur, but they are not treated here. Smoke, tufts, paints, sewing thread, smoke and tuft probes, are employed together with illumination systems, like LED lamps or lasers. With the laser development, a new era of fluid flow velocity measurement techniques started. Soon after laser invention, a laser Doppler velocimtery (LDV) is developed and applied in fluid mechanics. Non-intrusive era of fluid flow investigation has started. Various laser models, from continuum, and diode ones to impulse are widely used. Three component systems, even five beams probes, are employed today in complex researches. In-plane, stereoscopic, multi-plane stereoscopic, time-resolved, micro, holographic, scanning, tomographic and thermographic particle image velocimtery (PIV) have been used. In this case, besides illumination devices, contemporary applications employ fast cameras nowadays. Research of the turbulent swirling flow in pipe, behind the axial fan impeller, with the help of the LDV and PIV systems, as well as some results on wing tip vortex research in wind tunnel tests are presented. C3 - International Symposium on Aircraft Technology, MRO & Operations ISATECH’22, 14-16. September 2022., Belgrade T1 - Optical Velocity Measurement and Fluid Flow Visualization Techniques UR - https://hdl.handle.net/21.15107/rcub_machinery_6813 ER -
@conference{ author = "Čantrak, Đorđe", year = "2022", abstract = "Numerous fluid flow phenomena intrigue researchers worldwide. Flow visualization usually precedes experimental research and gives insight in flow structures. It can be used to show how the fluid flows around the model, in jet, in closed systems, in turbomachinery, and etc. In numerous cases geometries are very complex and even some chemical reactions occur, but they are not treated here. Smoke, tufts, paints, sewing thread, smoke and tuft probes, are employed together with illumination systems, like LED lamps or lasers. With the laser development, a new era of fluid flow velocity measurement techniques started. Soon after laser invention, a laser Doppler velocimtery (LDV) is developed and applied in fluid mechanics. Non-intrusive era of fluid flow investigation has started. Various laser models, from continuum, and diode ones to impulse are widely used. Three component systems, even five beams probes, are employed today in complex researches. In-plane, stereoscopic, multi-plane stereoscopic, time-resolved, micro, holographic, scanning, tomographic and thermographic particle image velocimtery (PIV) have been used. In this case, besides illumination devices, contemporary applications employ fast cameras nowadays. Research of the turbulent swirling flow in pipe, behind the axial fan impeller, with the help of the LDV and PIV systems, as well as some results on wing tip vortex research in wind tunnel tests are presented.", journal = "International Symposium on Aircraft Technology, MRO & Operations ISATECH’22, 14-16. September 2022., Belgrade", title = "Optical Velocity Measurement and Fluid Flow Visualization Techniques", url = "https://hdl.handle.net/21.15107/rcub_machinery_6813" }
Čantrak, Đ.. (2022). Optical Velocity Measurement and Fluid Flow Visualization Techniques. in International Symposium on Aircraft Technology, MRO & Operations ISATECH’22, 14-16. September 2022., Belgrade. https://hdl.handle.net/21.15107/rcub_machinery_6813
Čantrak Đ. Optical Velocity Measurement and Fluid Flow Visualization Techniques. in International Symposium on Aircraft Technology, MRO & Operations ISATECH’22, 14-16. September 2022., Belgrade. 2022;. https://hdl.handle.net/21.15107/rcub_machinery_6813 .
Čantrak, Đorđe, "Optical Velocity Measurement and Fluid Flow Visualization Techniques" in International Symposium on Aircraft Technology, MRO & Operations ISATECH’22, 14-16. September 2022., Belgrade (2022), https://hdl.handle.net/21.15107/rcub_machinery_6813 .