Academic literature on the topic 'Slotted-Wall'

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Journal articles on the topic "Slotted-Wall"

1

Urashima, Saburo, Koichi Ishizuka, and Hideo Kondo. "ENERGY DISSIPATION AND WAVE FORCE AT SLOTTED WALL." Coastal Engineering Proceedings 1, no. 20 (1986): 172. http://dx.doi.org/10.9753/icce.v20.172.

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The hydrodynamic coefficients are computed based on the measured total force on the single slotted wall in the wave field, or on the measured head loss in the uniform flow channel. The reflection, transmission and force coefficients on the single slotted wall are computed based on the mean values of the hydrodynamic coefficients. The correlations between these calculated values and measured values are found to be good. A design procedure of the single slotted wall is given the paper.
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Muataz, W. Sabri, A. Murad Noor, and K.A. Rahim Mohammed. "Bi-directional Beams Waveguide Slotted Antenna at Millimeter Wave." TELKOMNIKA Telecommunication, Computing, Electronics and Control 16, no. 4 (2018): 1515–21. https://doi.org/10.12928/TELKOMNIKA.v16i4.9057.

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This paper focused on designing a bi-directional beams waveguide slotted antenna at millimetre wave spectrum. Waveguide slotted antenna is known for its highly directional pattern. By having bidirectional pattern, the capacity of system coverage can be expanded. The design is implemented by using antenna slot theory on a waveguide structure. The slotted are made on two wall surfaces and the performance is compared to the slotted on single wall. The two models designs are simulated using Computer Simulation Technology (CST) microwave software. The simulation results show that both models operat
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Mabey, D. G., and F. W. Steinle. "Computer studies of hybrid slotted working sections with minimum steady interference at subsonic speeds." Aeronautical Journal 89, no. 884 (1985): 135–48. http://dx.doi.org/10.1017/s0001924000014664.

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SummaryCurrently there is renewed interest in the evaluation and reduction of steady wind tunnel wall interference, especially for large models.Evaluation of previous predictions for perforated and slotted tunnels suggests that a hybrid slotted tunnel, ie a slotted tunnel with closed slats and perforated slots) should offer minimum corrections for upwash, flow curvature and solid blockage. This suggestion is confirmed by the present computer studies of a range of rectangular hybrid slotted tunnels.The computer studies are for tunnel working section height to breadth ratios of 0·835 and 0·600 o
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Kai, Hisahiro, Jiro Hirokawa, and Makoto Ando. "Circularly Polarized Post-wall Waveguide Slotted Arrays." IEICE Electronics Express 1, no. 1 (2004): 7–12. http://dx.doi.org/10.1587/elex.1.7.

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Heshmati, Amirhossein, Hussein A. Mohammed, Mohammad Parsazadeh, et al. "Effect of Vertical Baffle Installation on Forced Convective Heat Transfer in Channel Having a Backward Facing Step." Applied Mechanics and Materials 388 (August 2013): 169–75. http://dx.doi.org/10.4028/www.scientific.net/amm.388.169.

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In this study, forced convective heat transfer is considered in channel over a backward facing step having a baffle on the top wall. Four different geometries with different expansion ratios and different type of baffles are numerically investigated. The study clearly shows that the geometry with expansion ratio 2 and solid baffle has the highest Nusselt number compared to other geometries. Considering both Nusselt number and skin friction coefficient for all four geometries clearly illustrated an increase in average Nusselt number by increasing the expansion ratio. This study clearly shows th
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Macha, J. Michael, Robert J. Buffington, John F. Henfling, David Van Every, and John L. Harris. "Slotted-wall blockage corrections for disks and parachutes." Journal of Aircraft 28, no. 9 (1991): 592–97. http://dx.doi.org/10.2514/3.46069.

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Poguluri, Sunny Kumar, and Il-Hyoung Cho. "Mitigation of liquid sloshing in a rectangular tank due to slotted porous screen." Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment 234, no. 3 (2020): 686–98. http://dx.doi.org/10.1177/1475090219895834.

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Liquid sloshing inside a tank with a slotted porous screen at the center is studied based on numerical and experimental methods. Slotted screens with three different porosities (0.0964, 0.1968 and 0.3022) for two submergence depths of 1 and 2 cm have been considered. One of the main advantages of the slotted screens is that the resonance frequency of the sloshing tank can be altered and the sloshing-induced motion/load can be suppressed by energy dissipation across the porous screen. The complexities of slotted screens equipped in a sloshing tank are accompanied by wave breaking, jet formation
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Mabey, D. G. "Homogeneous wall boundary condition for oscillatory flow in slotted tunnels." Aeronautical Journal 101, no. 1003 (1997): 99–110. http://dx.doi.org/10.1017/s0001924000066574.

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Abstract The aerodynamic interference between oscillating models and the walls of slotted windtunnels is controlled by the homogeneous wall boundary condition, which has hitherto been uncertain. In this report a new homogeneous boundary condition for slotted tunnels is suggested which incorporates the important effects of plenum chamber depth and slot parameter.In particular, this new boundary condition controls the transverse resonance frequencies of the tunnel, which represent a severe form of wall interference. Hence a comparison of measured resonance frequencies with predictions based on s
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Koshkid’ko, V. G., and M. M. Migalin. "Design of a Slotted Waveguide Antenna by Means of VBScript Scripting Language Macros in CAD Ansys HFSS." Journal of the Russian Universities. Radioelectronics 23, no. 1 (2020): 6–17. http://dx.doi.org/10.32603/1993-8985-2020-23-1-6-17.

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Introduction. Modern antenna devices contain a large number of repeating elements. The process of development of CAD models of such devices requires repeatedly performed operations that is a routine task for an engineer. Therefore, the problem of repeating operations automation arises when constructing antenna models with periodic structures.Aim. To demonstrate the automation of slotted waveguide antennas design process in CAD Ansys HFSS.Materials and methods. In order to determine the dimensions of the slotted waveguide antenna the energy method was used. Automation procedure of the design of
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Yang, Zhijian, Lisuo Sun, Bo Nan, and Shunli Wei. "Thermal Performance of Slotted Light Steel-Framed Composite Wall." Energies 16, no. 5 (2023): 2482. http://dx.doi.org/10.3390/en16052482.

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In this study, calibrated hot box and finite element simulation methods were used to study the influence of a slotted web on the thermal performance of a lightweight steel stud composite wall. By comparing the results from the simulations and experiments, the accuracy of the finite element method was verified; this method was then used for parameter analyses. The results showed that the wall’s thermal transfer coefficient is inversely proportional to increases in the length of the slot and height of the stud web, leading to improvements in the thermal insulation effect; vice versa, the wall th
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Dissertations / Theses on the topic "Slotted-Wall"

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Bailey, Matthew Marlando. "An Extended Calibration and Validation of a Slotted-Wall Transonic Wall-Interference Correction Method for the National Transonic Facility." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/95882.

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Correcting wind tunnel data for wall interference is a critical part of relating the acquired data to a free-air condition. Accurately determining and correcting for the interference caused by the presence of boundaries in wind tunnels can be difficult especially for facilities employing ventilated boundaries. In this work, three varying levels of ventilation at the National Transonic Facility (NTF) were modeled and calibrated with a general slotted wall (GSW) linear boundary condition to validate the computational model used to determine wall interference corrections. Free-air lift, drag, an
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Broughton, Cabot A. Carleton University Dissertation Engineering Aeronautical. "Experimental investigation of slotted wall wind tunnel test sections for low interference road vehicle testing." Ottawa, 1990.

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Dogan, Doganay. "Dual Polarized Slotted Waveguide Array Antenna." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613016/index.pdf.

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An X band dual polarized slotted waveguide antenna array is designed with very high polarization purity for both horizontal and vertical polarizations. Horizontally polarized radiators are designed using a novel non-inclined edge wall slots whereas the vertically polarized slots are implemented using broad wall slots opened on baffled single ridge rectangular waveguides. Electromagnetic model based on an infinite array unit cell approach is introduced to characterize the slots used in the array. 20 by 10 element planar array of these slots is manufactured and radiation fields are measured. The
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Books on the topic "Slotted-Wall"

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United States. National Aeronautics and Space Administration., ed. Wall-interference assessment in three-dimensional slotted-wall wind tunnels: Final technical report. College of William and Mary, 1985.

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United States. National Aeronautics and Space Administration., ed. Wall-interference assessment in three-dimensional slotted-wall wind tunnels: Final technical report. College of William and Mary, 1985.

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3

Everhart, Joel L. Slotted-wall flow-field measurements in a transonic wind tunnel. Langley Research Center, 1991.

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B, Igoe William, Flechner Stuart G, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Program, eds. Slotted-wall flow-field measurements in a transonic wind tunnel. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1991.

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B, Igoe William, Flechner Stuart G, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Program., eds. Slotted-wall flow-field measurements in a transonic wind tunnel. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1991.

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6

Kemp, William B. Description and evaluation of an interference assessment method for a slotted-wall wind tunnel. Langley Research Center, 1991.

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7

United States. National Aeronautics and Space Administration. Scientific and Technical Information Program., ed. Wall interference and boundary simulation in a transonic wind with a discretely slotted test section. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1993.

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8

Al-Saadi, Jassim A. Wall interference and boundary simulation in a transonic wind tunnel with a discretely slotted test section. Langley Research Center, 1993.

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9

Center, Langley Research, ed. User's guide to PANCOR: A panel method program for interference assessment in slotted-wall wind tunnels. National Aeronautics and Space Administration, Langley Research Center, 1990.

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Center, Langley Research, ed. User's guide to PANCOR: A panel method program for interference assessment in slotted-wall wind tunnels. National Aeronautics and Space Administration, Langley Research Center, 1990.

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Book chapters on the topic "Slotted-Wall"

1

Hao, Jiping, Xinghuang Wu, Weifeng Tian, Shenghui Li, and Rong Wang. "Experimental and Numerical Investigation of Weak-Axis Connected Steel Plate Shear Wall with Non-slotted and Partially Slotted Infill Plates." In Advances in Frontier Research on Engineering Structures. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8657-4_11.

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AbstractAll Components with H-shaped section are widely used in steel structures, in which the connection of beam section to column flange (i.e. weak-axis connection) is inevitable. In order to study the mechanical properties of weak-axis connected steel plate shear walls, a 1/3 scaled steel plate wall specimen was designed and subjected to a cyclic test to investigate the properties of stiffness, strength, ductility and energy dissipation. On the basis of this, the partially slotted steel plate shear wall was proposed. The FE model of the test specimen was developed and verified with the test
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Conference papers on the topic "Slotted-Wall"

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Gu, Hao, and Wei Zhang. "Effect of slotted jet on cooling characteristics of turbine guide vane end wall." In International Conference on New Materials, Machinery, and Vehicle Engineering 2024, edited by Jinyang Xu and J. Paulo Davim. SPIE, 2024. http://dx.doi.org/10.1117/12.3055030.

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Kumar, Neeresh, Akshay Warkade, Bal Mukund Jha, and Seema Doongarwal. "Development of Low Side Lobe Level Multi-piece Narrow Wall Slotted Waveguide Array Antenna." In 2024 Second International Conference on Microwave, Antenna and Communication (MAC). IEEE, 2024. https://doi.org/10.1109/mac61551.2024.10837167.

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Evans, K. J., S. Chawla, K. M. Sherer, et al. "Evaluation of Pitting Penetration Associated with Steel Exterior of Hanford Tanks." In CONFERENCE 2022. AMPP, 2022. https://doi.org/10.5006/c2022-18002.

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Abstract Radioactive and chemically hazardous wastes are stored at the Hanford site in underground double-shell tanks (DSTs) constructed of carbon steel. The corrosion management of these tanks has largely focused on the complex waste chemistries that reside within the interiors of the primary tanks. More recently, attention has been given to the corrosion that has been found on the exterior of the secondary liners of the DSTs. The cause of the external corrosion seems to be related to the intrusion and accumulation of groundwater in the tertiary leak detection systems, which exist under the c
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Badrak, Robert P., and David J. Hillis. "Rotary Expansion of Steel and Corrosion Resistant Alloy Tubulars for Downhole Applications." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03106.

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Abstract The use of rotary expansion technology to accomplish solid (non-slotted or perforated wall) tubular expansion goals has been recently been introduced to the Oil and Gas Industry. This rotary expansion technology is contrasted with the fixed cone technique. The effects of compliant versus non-compliant rotary techniques on potential applications are addressed. The effects of the expansion process on mechanical properties and corrosion resistance are presented. Reported results that characterize process effects include full size product performance tests, corrosion rate tests and sulfid
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Evans, K. J., S. Chawla, K. M. Sherer, et al. "Laboratory Studies Related to External Corrosion of Hanford’S Double-Shell Tanks in Contact with Concrete Liner." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16576.

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Abstract Radioactive and chemically hazardous wastes are stored at the Hanford site in underground double-shell tanks (DSTs) constructed of carbon steel. The corrosion management of these tanks has mainly focused on the complex waste chemistries that are contained in the primary tank. More recently, attention has been given to the corrosion that has been found on the exterior of the secondary liners of the DSTs. The cause of the external corrosion could be related to the intrusion and accumulation of water in the tertiary leak detection systems, which exist under the concrete foundation of the
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Urashima, Saburo, Koichi Ishizuka, and Hideo Kondo. "Energy Dissipation and Wave Force at Slotted Wall." In 20th International Conference on Coastal Engineering. American Society of Civil Engineers, 1987. http://dx.doi.org/10.1061/9780872626003.172.

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Lubis, Moh Amanta K. S., Derry P. Yusuf, Fitri Y. Zulkifli, and Eko T. Rahardjo. "Bandwidth improvement with narrow wall slotted waveguide antenna." In 2017 International Conference on Radar, Antenna, Microwave, Electronics, and Telecommunications (ICRAMET). IEEE, 2017. http://dx.doi.org/10.1109/icramet.2017.8253153.

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Krynytzky, Alexander, Meredith Fleming, David Sommerfield, and Pei Li. "Computational Modeling of a Slotted Wall Test Section." In 28th Aerodynamic Measurement Technology, Ground Testing, and Flight Testing Conference. American Institute of Aeronautics and Astronautics, 2012. http://dx.doi.org/10.2514/6.2012-2863.

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Weixin Zhao, Yu Zhang, D. G. Doñoro, and T. K. Sarkar. "Optimizing narrow-wall slotted waveguide arrays using HOBIES." In 2010 IEEE International Symposium Antennas and Propagation and CNC-USNC/URSI Radio Science Meeting. IEEE, 2010. http://dx.doi.org/10.1109/aps.2010.5561980.

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Dogan, D., and O. A. Civi. "Edge wall slotted waveguide antenna with low cross polarization." In 2010 IEEE International Symposium Antennas and Propagation and CNC-USNC/URSI Radio Science Meeting. IEEE, 2010. http://dx.doi.org/10.1109/aps.2010.5561813.

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Reports on the topic "Slotted-Wall"

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Van Every, D., and J. Harris. Slotted-wall research with disk and parachute models in the DSMA low-speed wind tunnel. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/6821954.

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