Academic literature on the topic 'Wind tunnels Flow visualization'

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Journal articles on the topic "Wind tunnels Flow visualization"

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Ristic, Slavica. "A - a view in the invisible." Theoretical and Applied Mechanics 40, no. 1 (2013): 87–119. http://dx.doi.org/10.2298/tam1301087r.

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Flow visualization is an important topic in, experimental and computational fluid dynamics and has been the subject of research for many years. This paper presents an overview of flow visualization techniques. The physical basis and applications of different visualization methods for subsonic, transonic and supersonic flow in wind and water tunnels are described: direct injection methods, (smoke, dye, fog and different small particles), gas and hydrogen bubbles, , flow visualization by tufts, oil, liquid crystals, pressure and temperature sensitive paints, shadow, schlieren, interferometry, La
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Ristic, Slavica, Suzana Linic, and Marija Samardzic. "Turbulence investigation in the VTI’s experimental aerodynamics laboratory." Thermal Science 21, suppl. 3 (2017): 629–47. http://dx.doi.org/10.2298/tsci160130187r.

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Wind tunnels are the aerodynamic laboratories which task is to enable high quality and stabile airflow in controlled volume, a test section, during run time, in order to study the effects of streaming around various aeronautical or nonaeronautical models (airfoils and bluff bodies with complex motorized or robotic constructions). The main requirement that leads to quality and reliable measurement results is a high flow quality in the test section: uniformity of the velocity and pressure fields along and across the test section, low turbulence level and low flow direction angularities or swirli
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Guiming, Tang. "Surface oil flow technique and liquid crystal thermography for flow visualization in impulse, wind tunnels." Acta Mechanica Sinica 10, no. 3 (1994): 220–26. http://dx.doi.org/10.1007/bf02487610.

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Peng, Jiang Bo, Ze Fang Lv, Xin Yu, et al. "Visualization of Flow Field: Application of PLIF Technique." Journal of Spectroscopy 2018 (2018): 1–6. http://dx.doi.org/10.1155/2018/8759898.

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The objective of this paper is to apply planar laser-induced fluorescence (PLIF) technology to flow field visualization. This experiment was carried out in a one-meter wind tunnel to study the wake flow field around a circular cylinder. This experiment studied the method of injecting tracer into the flow field; the frequency of the vortex in the wake field and the vortex speed are quantitatively analyzed. This paper gives the correspondence between the speed of the flow field and the frequency of the laser, which could be used as a rough reference standard for future wind tunnel visualization
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HASE, Suguru. "Application of Flow Visualization Technique to Aircraft Wind Tunnel Testing." Journal of the Visualization Society of Japan 35, no. 138 (2015): 2–7. http://dx.doi.org/10.3154/jvs.35.138_2.

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KONDO, Hirofumi. "Flow visualization in wind-tunnel tests on large launch vehicles." JOURNAL OF THE FLOW VISUALIZATION SOCIETY OF JAPAN 6, no. 21 (1986): 114–21. http://dx.doi.org/10.3154/jvs1981.6.114.

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NOMURA, Ryo, Hideki KAWAMOTO, Hidenori YOSHIDA, Takeshi YONEDA, and Shigeru AOKI. "Visualization of Supersonic Wind Tunnel Flow Based on CFD Analysis." Transaction of the Visualization Society of Japan 25, no. 10 (2005): 72–77. http://dx.doi.org/10.3154/tvsj.25.72.

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Bienkiewicz, B., and J. E. Cermak. "A flow visualization technique for low-speed wind-tunnel studies." Experiments in Fluids 5, no. 3 (1987): 212–14. http://dx.doi.org/10.1007/bf00298465.

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Selig, Michael S., and Bryan D. McGranahan. "Wind Tunnel Aerodynamic Tests of Six Airfoils for Use on Small Wind Turbines." Journal of Solar Energy Engineering 126, no. 4 (2004): 986–1001. http://dx.doi.org/10.1115/1.1793208.

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This paper presents detailed wind tunnel tests data taken on six airfoils having application to small wind turbines. In particular, lift, drag and moment measurements were taken at Reynolds numbers of 100,000, 200,000, 350,000 and 500,000 for both clean and rough conditions. In some cases, data were also taken at a Reynolds number of 150,000. The airfoils included the E387, FX 63-137, S822, S834, SD2030, and SH3055. Prior to carrying out the tests, wind tunnel flow quality measurements were taken to document the low Reynolds number test environment. Oil flow visualization data and performance
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Panten, Thomas, and Heiko Meironke. "Experimental Investigations inside the Wind Tunnel at the University of Stralsund." Applied Mechanics and Materials 831 (April 2016): 117–25. http://dx.doi.org/10.4028/www.scientific.net/amm.831.117.

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In this paper the wind tunnel at the University of Applied Sciences Stralsund and few construction details as well as the calibration of the nozzle are presented. Furthermore some approaches to visualization and measurement of velocity fields of a simple body of vehicle are shown. The wake structure behind of simple car models was investigated experimentally using Particle Image Velocimetry (PIV). Furthermore the visualization of flow field by the fog probe systems supports the evaluation of the flow and drag behavior.
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Dissertations / Theses on the topic "Wind tunnels Flow visualization"

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Hickle, Curtis. "Wind Tunnel renovation, flow verification and flapping wing analysis." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2006. http://library.nps.navy.mil/uhtbin/hyperion/06Jun%5FHickle.pdf.

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Thesis (M.S. in Mechanical Engineering)--Naval Postgraduate School, June 2006.<br>Thesis Advisor(s):Dr. Kevin Jones and Dr. Garth Hobson. "June 2006." Includes bibliographical references (p.79-81). Also available in print.
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Jones, Gregory Stephen. "The measurement of wind tunnel flow quality at transonic speeds." Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/39109.

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The measurement of wind tunnel flow quality for the transonic flow regime has been plagued by the inability to interpret complex unsteady flow field information obtained in the free stream. Traditionally hot wire anemometry and fluctuating pressure techniques have been used to quantify the unsteady characteristics of a wind tunnel. This research focuses on the application of these devices to the transonic flow regime. Utilizing hot wire anemometry, one can decompose the unsteady flow field with a three sensor technique, to obtain fluctuations associated with the velocity, density, and total t
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Sumantran, V. "The effect of free stream disturbances and control surface deflections on the performance of the Wortmann airfoil at low Reynolds numbers." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/49921.

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A wing with a Wortmann FX-63-137-ESM airfoil section has been used to study some unique problems encountered in wing aerodynamics in the range of Reynolds numbers between 50,000 and 500,000. The wind-tunnel testing conducted in the 6'x 6' Stability tunnel included strain-gauge data, pressure data, and flow-visualization studies. The laminar separation bubble which frequently occurs on the upper surface of the wing is found to dominate its performance and gives rise to a hysteresis loop for lift and drag. Changes in airfoil performance due to positive flap or control surface deflections resembl
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Sung, Bongzoo. "Analysis of the vortical flow around a 60 degree delta wing with vortex flap." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/49932.

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Subsonic wind tunnel investigations were conducted on a 60° swept, flat plate, delta wing with a leading edge vortex flap. The pressure distributions were measured over a range of angles of attack starting from zero to 40° in 5° interval and flap deflection angles from zero to 45° with 5° increments at a Reynolds number of about 2.14 x 10‘ based on the root chord. The flow visualization experiments were performed from zero degree to the stall angle, with ten different flap deflection angles at the same Reynolds number. The mean flow field was measured at angles of attack l0° and 15° with the f
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Ringshia, Aditya K. "Aerodynamic Measurements in a Wind Tunnel on Scale Models of a 777 Main Landing Gear." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/34583.

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Aerodynamic measurements were taken over models of the Boeing 777 high fidelity isolated landing gear in the 6- by 6-foot Virginia Tech Stability Wind Tunnel (VT-SWT) at a free-stream Mach number of 0.16. Noise control devices (NCD) were developed at Virginia Tech [9] to reduce noise by shielding gear components, reducing wake interactions and by streamlining the flow around certain landing gear components. Aerodynamic measurements were performed to understand the flow over the landing gear and also changes in the flow between "Baseline" and "NCD" configurations (without and with Noise Control
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Zakaria, Mohamed Yehia. "Unsteady Nonlinear Aerodynamic Modeling and Applications." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/79909.

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Unsteady aerodynamic modeling is indispensable in the design process of rotary air vehicles, flapping flight and agile unmanned aerial vehicles. Undesirable vibrations can cause high-frequency variations in motion variables whose effects cannot be well predicted using quasi-steady aerodynamics. Furthermore, one may exploit the lift enhancement that can be generated through an unsteady motion for optimum design of flapping vehicles. Additionally, undesirable phenomena like the flutter of fixed wings and ensuing limit cycle oscillations can be exploited for harvesting energy. In this dissertatio
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Clark, Kylen D. "A Numerical Comparison of Symmetric and Asymmetric Supersonic Wind Tunnels." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1447071393.

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Gordon, Robert. "Advanced 2-D and 3-D particle velocimetry techniques for quantitative fluid flow visualisation in real-time." Thesis, University of Aberdeen, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262919.

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The aim of this study was to develop and implement a low cost, high speed, flow visualisation tool for 3-D velocity measurement throughout time dependent particle seeded fluid flow volumes. To achieve this, a new high performance wind / water tunnel was designed and constructed using CFD as a design aid. The tunnel provided the necessary platform for obtaining consistent high quality images of fluid flow. Images were grabbed using low cost CCD cameras and downloaded via a PC mounted image capture board, to system RAM. The conventional high cost laser sheet illumination method was replaced with
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Pannell, C. N. "Fibre-optic laser Doppler velocimetry." Thesis, University of Kent, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383370.

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Jones, Michael Charles 1971. "A study of the mechanism for vortex breakdown and some measures for its control." Monash University, Dept. of Mechanical Engineering, 2002. http://arrow.monash.edu.au/hdl/1959.1/7694.

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Books on the topic "Wind tunnels Flow visualization"

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Bruce, Robert A. A vapor generator for transonic flow visualization. National Aeronautics and Space Administration, Langley Research Center, 1989.

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Bruce, Robert A. A vapor generator for transonic flow visualization. National Aeronautics and Space Administration, Langley Research Center, 1989.

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Newton, James E. Icing of flow conditioners in a closed-loop wind tunnel. National Aeronautics and Space Administration, 1987.

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Newton, James. Icing of flow conditioners in a closed-loop wind tunnel. National Aeronautics and Space Administration, 1987.

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Erickson, Gary E. Fiber-optic-based laser vapor screen flow visualization sysytem for aerodynamic research in larger scale subsonic and transonic wind tunnels. National Aeronautics and Space Administration, Langley Research Center, 1994.

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Erickson, Gary E. Fiber-optic-based laser vapor screen flow visualization sysytem for aerodynamic research in larger scale subsonic and transonic wind tunnels. National Aeronautics and Space Administration, Langley Research Center, 1994.

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Erickson, Gary E. Fiber-optic-based laser vapor screen flow visualization system for aerodynamic research in larger scale subsonic and transonic wind tunnels. Langley Research Center, 1994.

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Erickson, Gary E. Fiber-optic-based laser vapor screen flow visualization system for aerodynamic research in larger scale subsonic and transonic wind tunnels. Langley Research Center, 1994.

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Atlantic, Canada Defence Research Establishment. Flow visualization experiments with submarine models in a wind tunnel. s.n, 1988.

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Barry, John Willard, and Patricia J. Skyler. Final report: Compendium of drop size spectra compiled from wind tunnel tests. USDA Forest Service, Forest Pest Management, 1991.

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Book chapters on the topic "Wind tunnels Flow visualization"

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Gartenberg, Ehud. "Infrared Imaging in Cryogenic Wind Tunnels." In Flow Visualization VI. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84824-7_112.

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Bömmels, R., M. Machacek, A. Landolt, and T. Rösgen. "Quantitative Flow Visualization for Large Scale Wind Tunnels." In The Aerodynamics of Heavy Vehicles: Trucks, Buses, and Trains. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-44419-0_17.

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Briottet, X., and M. Dinguirard. "Automatic Analysis of Thermocolor Paints for Heat Flow Measurements in Wind Tunnel Facilities." In Flow Visualization VI. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84824-7_85.

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Wilcox, Floyd J. "Use of a Colored Water Surface Flow Visualization Technique in a Supersonic Wind Tunnel to Investigate Cavity Flow Fields." In Flow Visualization VI. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84824-7_4.

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Del Frate, John H. "In-Flight Flow Visualization Results from High Angle of Attack Tests on a Forward Swept Wing Aircraft with Comparisons to Water Tunnel Results." In Flow Visualization VI. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84824-7_44.

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Kilgore, Robert A. "Cryogenic Wind Tunnels for Aerodynamic Testing." In Flow at Ultra-High Reynolds and Rayleigh Numbers. Springer New York, 1998. http://dx.doi.org/10.1007/978-1-4612-2230-9_4.

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Sofronov, Ivan L. "Highly-Accurate Artificial Boundary Conditions for Unsteady Transonic Flow Problems in Wind Tunnels." In Hyperbolic Problems: Theory, Numerics, Applications. Birkhäuser Basel, 1999. http://dx.doi.org/10.1007/978-3-0348-8724-3_42.

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Kompenhans, J., M. Raffel, C. Willert, et al. "Investigation of Unsteady Flow Fields in Wind Tunnels by Means of Particle Image Velocimetry." In Three-Dimensional Velocity and Vorticity Measuring and Image Analysis Techniques. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-015-8727-3_5.

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Andrianne, Thomas, Norizham Abdul, and Grigorios Dimitriadis. "Flow Visualization and Proper Orthogonal Decomposition of Aeroelastic Phenomena." In Wind Tunnels. InTech, 2011. http://dx.doi.org/10.5772/15889.

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Mahmood, Muzafferuddin. "Flow Visualization in Wind Tunnels." In Wind Tunnels and Experimental Fluid Dynamics Research. InTech, 2011. http://dx.doi.org/10.5772/21494.

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Conference papers on the topic "Wind tunnels Flow visualization"

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Mueller, Andreas, Andrin Landolt, and T. K. Rösgen. "Probe capture for quantitative flow visualization in large scale wind tunnels." In 28th Aerodynamic Measurement Technology, Ground Testing, and Flight Testing Conference. American Institute of Aeronautics and Astronautics, 2012. http://dx.doi.org/10.2514/6.2012-3317.

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Hu, Chenghang. "Optical-fiber-transmission laser sheet technique for flow visualization in intermittent high-speed wind tunnels." In Optical Technology and Image Processing fo rFluids and solids Diagnostics 2002, edited by Gong Xin Shen, Soyoung S. Cha, Fu-Pen Chiang, and Carolyn R. Mercer. SPIE, 2003. http://dx.doi.org/10.1117/12.509777.

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Yano, R., V. Contini, S. Merriman, et al. "Flow visualization in a supersonic nonequilibrium plasma wind tunnel." In 30th Plasmadynamic and Lasers Conference. American Institute of Aeronautics and Astronautics, 1999. http://dx.doi.org/10.2514/6.1999-3725.

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Garbeff, Theodore J., and Jennifer K. Baerny. "Recent Advancements in the Infrared Flow Visualization System for the NASA Ames Unitary Plan Wind Tunnels." In 55th AIAA Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics, 2017. http://dx.doi.org/10.2514/6.2017-1051.

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Hiraki, K., D. Zaitsu, Y. Yanaga, and H. Kleine. "Flow visualization around a rotating body in a wind tunnel." In 31st International Congress on High-Speed Imaging and Photonics, edited by T. Goji Etoh and Hiroyuki Shiraga. SPIE, 2017. http://dx.doi.org/10.1117/12.2271143.

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TIGHE, THOMAS. "Subsonic wind tunnel design for low turbulence and flow visualization capabilities." In Sensor and Measurements Techniques for Aeronautical Applications. American Institute of Aeronautics and Astronautics, 1988. http://dx.doi.org/10.2514/6.1988-4672.

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Alderfer, David, Paul Danehy, Jennifer Inman, Karen Berger, Gregory Buck, and R. Schwartz. "Fluorescence Visualization of Hypersonic Flow Over Rapid Prototype Wind-Tunnel Models." In 45th AIAA Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics, 2007. http://dx.doi.org/10.2514/6.2007-1063.

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Karbon, Kenneth J., and Stephen E. Longman. "Automobile Exterior Water Flow Analysis Using CFD and Wind Tunnel Visualization." In International Congress & Exposition. SAE International, 1998. http://dx.doi.org/10.4271/980035.

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Decker, A., and A. Buggele. "Wind tunnel operations using archival flow visualization records and artificial neural networks." In 32nd Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics, 1994. http://dx.doi.org/10.2514/6.1994-390.

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Lee, Jae-Young, and Sa-Ya Lee. "Flow Visualization of Pebble Bed HTGR." In Fourth International Topical Meeting on High Temperature Reactor Technology. ASMEDC, 2008. http://dx.doi.org/10.1115/htr2008-58063.

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The nuclear core of High Temperature Gas Reactor (HTGR) with pebble bed type has been investigated intensively due to its benefits in management, but its complicated flow geometry requested the reliable analytical method. Recent studies have been made using the three dimensional computational methods but they need to be evaluated with the experimental data. Due to the complicated and narrow flow channel, the intrusive methods of flow measurement are not proper in the study. In the present study, we developed a wind tunnel for the pebble bed geometry in the structure of Face Centered Cubic (FCC
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Reports on the topic "Wind tunnels Flow visualization"

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Schneider, Steven P. Towards High-Reynolds-Number Quiet Flow in Hypersonic Wind Tunnels. Defense Technical Information Center, 2009. http://dx.doi.org/10.21236/ada500049.

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Grossir, Guillaume. On the design of quiet hypersonic wind tunnels. Von Karman Institute for Fluid Dynamics, 2020. http://dx.doi.org/10.35294/tm57.

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This document presents a thorough literature review on the development of hypersonic quiet tunnels. The concept of boundary layer transition in high-speed flows is presented first. Its consequences on the free-stream turbulence levels in ground facilities are reviewed next, demonstrating that running boundary layers along the nozzle walls must remain laminar for quiet operation. The design key points that enable laminar boundary layers and hypersonic operation with low free-stream noise levels are then identified and discussed. The few quiet facilities currently operating through the world are
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