Relevant bibliographies by topics / Rectangular Channel

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Rectangular Channel'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 September 2023

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Journal articles on the topic "Rectangular Channel"

1

Cui, Yongbin, Dong Liu, and Yu Shu. "Study on Heat Transfer Characteristics of Graphene Nanofluids in Mini-Channels of Thermal Integrated Building." Entropy 25, no. 5 (April 25, 2023): 712. http://dx.doi.org/10.3390/e25050712.

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Two kinds of rectangular mini-channels of different sizes were designed and fabricated for testing the convective heat transfer characteristics of graphene nanofluids. The experimental results show that the average wall temperature decreases with the increases in graphene concentration and Re number at the same heating power. Within the experimental Re number range, the average wall temperature of 0.03% graphene nanofluids in the same rectangular channel decreases by 16% compared with that of water. At the same heating power, the convective heat transfer coefficient increases with the increase in the Re number. The average heat transfer coefficient of water can be increased by 46.7% when the mass concentration of graphene nanofluids is 0.03% and the rib-to-rib ratio is 1:2. In order to better predict the convection heat transfer characteristics of graphene nanofluids in small rectangular channels of different sizes, the convection heat transfer equations applicable to graphene nanofluids of different concentrations in small rectangular channels with different channel rib ratios were fitted, based on factors such as flow Re number, graphene concentration, channel rib ratio, Pr number, and Pe number; the average relative error (MRE) was 8.2%. The mean relative error (MRE) was 8.2%. The equations can thus describe the heat transfer characteristics of graphene nanofluids in rectangular channels with different groove-to-rib ratios.
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Khaouani, Mohammed, and Ahlam Guen-Bouazza. "Impact of multiple channels on the Characteristics of Rectangular GAA MOSFET." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 4 (August 1, 2017): 1899. http://dx.doi.org/10.11591/ijece.v7i4.pp1899-1905.

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<p>Square gate all around MOSFETs are a very promising device structures allowing to continue scaling due to their superior control over the short channel effects. In this work a numerical study of a square structure with single channel is compared to a structure with 4 channels in order to highlight the impact of channels number<em> </em>on the device’s DC parameters (drain current and threshold voltage). Our single channel rectangular GAA MOSFET showed reasonable ratio Ion/Ioff of 10<sup>4</sup>, while our four channels GAA MOSFET showed a value of 10<sup>3</sup>. In addition, a low value of drain induced barrier lowering<em> (DIBL) of </em>60mV/V was obtained for our single channel GAA and a lower value of with 40mv/v has been obtained for our four channel one. Also, an extrinsic transconductance of 88ms/µm have been obtained for our four channels GAA compared to the single channel that is equal to 7ms/µm.</p>
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Nilson, R. H., S. K. Griffiths, S. W. Tchikanda, and M. J. Martinez. "Axially Tapered Microchannels of High Aspect Ratio for Evaporative Cooling Devices." Journal of Heat Transfer 126, no. 3 (June 1, 2004): 453–62. http://dx.doi.org/10.1115/1.1735744.

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Analytical solutions are derived for evaporating flow in open rectangular microchannels having a uniform depth and a width that decreases along the channel axis. The flow generally consists of two sequential domains, an entry domain where the meniscus is attached to the top corners of the channel followed by a recession domain where the meniscus retreats along the sidewalls toward the channel bottom. Analytical solutions applicable within each domain are matched at their interface. Results demonstrate that tapered channels provide substantially better cooling capacity than straight channels of rectangular or triangular cross section, particularly under opposing gravitational forces. A multiplicity of arbitrarily tapered channels can be microfabricated in metals using LIGA, a process involving electrodeposition into a lithographically patterned mold.
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Sudo, Y., and M. Kaminaga. "A New CHF Correlation Scheme Proposed for Vertical Rectangular Channels Heated From Both Sides in Nuclear Research Reactors." Journal of Heat Transfer 115, no. 2 (May 1, 1993): 426–34. http://dx.doi.org/10.1115/1.2910695.

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In this study, an investigation was carried out to identify the important parameters affecting critical heat flux (CHF) in rectangular channels, focusing on the effects of flow direction, channel inlet subcooling from 1 to 213 K, the channel outlet condition extending from subcooling of 0–74 K to quality of 0–1.0, pressure of 0.1 to 4 MPa, water mass flux of −25,800 to + 6250 kg/m2s, and channel configuration. In particular, the effect of the outlet subcooling in upflow and downflow on the CHF was quantitatively investigated. As a result of this study, a new CHF scheme covering downflow, countercurrent flow, and upflow was established in the rectangular channels within the ranges of parameters investigated in this study.
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Lei, Zhiliang, and Zewei Bao. "Supercritical Heat Transfer and Pyrolysis Characteristics of n-Decane in Circular and Rectangular Channels." Energies 16, no. 9 (April 24, 2023): 3672. http://dx.doi.org/10.3390/en16093672.

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In this research, the effects of different channel cross-section shapes on the flow, heat transfer and pyrolysis characteristics of n-decane were analyzed and compared based on CFD simulations. The interactions between cracking, heat transfer and flow field in a circular tube and a rectangular tube were studied. The results showed that the mean pressure drop in the rectangular channel is 1.18 times as high as that in the circular channel with pyrolysis due to its smaller equivalent diameter. The maximum value of the chemical heat sink in the rectangular channel is 1.6 times as high as that in the circular channel. The high temperature zone of any cross section in the rectangular channel is much larger than that in the circular channel due to the superposition of the boundary layer and lower turbulent kinetic energy in the corners of the rectangular channel. The maximum value of the Nu in the circular channel is 1.3 times as high as that in the rectangular channel with pyrolysis due to larger heat capacity, lower viscosity and higher wall shear stress.
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6

Li, Dian Xun, and Shu Sheng Zhang. "The Experiment for Vertical Rectangular Micro-Channel Flow Boiling." Advanced Materials Research 960-961 (June 2014): 451–55. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.451.

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To further deepen exploration of boiling in micro-channels a set of experiment system for micro-channel flow boiling is homemade, which includes experimental equipment required and experimental pieces of the design process. The channel is width of 100mm, length of 1200mm, and the groove depth of 95mm. The gasket thickness is 0.5mm, 1.0mm, 1.5mm or 2.0mm.
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7

Han, J. C. "Heat Transfer and Friction Characteristics in Rectangular Channels With Rib Turbulators." Journal of Heat Transfer 110, no. 2 (May 1, 1988): 321–28. http://dx.doi.org/10.1115/1.3250487.

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The effect of the channel aspect ratio on the distribution of the local heat transfer coefficient in rectangular channels with two opposite ribbed walls (to simulate turbine airfoil cooling passages) was determined for a Reynolds number range of 10,000 to 60,000. The channel width-to-height ratios (W/H, ribs on side W) were 1/4, 1/2, 1, 2, and 4. The test channels were heated by passing current through thin, stainless steel foils instrumented with thermocouples. The local heat transfer coefficients on the ribbed side wall and on the smooth side wall of each test channel from the channel entrance to the fully developed regions were measured for two rib spacings (P/e = 10 and 20). The rib angle-of-attack was kept at 90 deg. The local data in the fully developed region were averaged and correlated, based on the heat transfer and friction similarity laws developed for ribbed channels, to cover the ranges of channel aspect ratio, rib spacing, rib height, and Reynolds number. The results compare well with the published data for flow in a square channel with two opposite ribbed walls. The correlations can be used in the design of turbine airfoil cooling passages.
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Kong, Fanli, Chi Xu, Yijiang Fan, Dali Yu, Jie Yu, and Shuyong Liu. "Design and Assessment of Lead–sCO2 Intermediate Heat Exchanger for LFRs." E3S Web of Conferences 236 (2021): 01012. http://dx.doi.org/10.1051/e3sconf/202123601012.

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Lead–sCO2 intermediate heat exchanger (IHX) was designed for lead-cooled fast reactor (LFR). The reactor coolant is lead and flowing through a circular straight channel, meanwhile, sCO2 is heated through 5 channels with different geometries were investigated respectively, including straight channel, zigzag 52° channel, S-shaped fins, offset rectangular fins, and airfoil fins. Considering the thermal-hydraulics characteristics, mechanical structure, corrosion, and flow blockage in the IHX designs, the performance, total cost, and power density of several heat exchanger designs were evaluated and compared. Finally, a printed circuit heat exchanger (PCHE) design using the circular straight (lead) - offset rectangular fins (sCO2) channels was proposed. The straight and S-shaped channels for sCO2 flow were recommended as alternative designs under certain circumstances. However, S-shaped fins and zigzag channels will dramatically increase the cost while straight and airfoil channels will greatly increase the volume.
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KUMAMARU, Hiroshige, and Yoshiki FUJIWARA. "Magnetohydrodynamic Flow in Rectangular Channel." Journal of Nuclear Science and Technology 36, no. 1 (January 1999): 110–13. http://dx.doi.org/10.1080/18811248.1999.9726187.

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MARTIN, J., N. RAKOTOMALALA, L. TALON, and D. SALIN. "Viscous lock-exchange in rectangular channels." Journal of Fluid Mechanics 673 (February 14, 2011): 132–46. http://dx.doi.org/10.1017/s0022112010006208.

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In a viscous lock-exchange gravity current, which describes the reciprocal exchange of two fluids of different densities in a horizontal channel, the front between two Newtonian fluids spreads as the square root of time. The resulting diffusion coefficient reflects the competition between the buoyancy-driving effect and the viscous damping, and depends on the geometry of the channel. This lock-exchange diffusion coefficient has already been computed for a porous medium, a two-dimensional (2D) Stokes flow between two parallel horizontal boundaries separated by a vertical height H and, recently, for a cylindrical tube. In the present paper, we calculate it, analytically, for a rectangular channel (horizontal thickness b and vertical height H) of any aspect ratio (H/b) and compare our results with experiments in horizontal rectangular channels for a wide range of aspect ratios (1/10 to 10). We also discuss the 2D Stokes–Darcy model for flows in Hele-Shaw cells and show that it leads to a rather good approximation, when an appropriate Brinkman correction is used.
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Dissertations / Theses on the topic "Rectangular Channel"

1

Li, Zhou. "Multi-channel quantum dragons in rectangular nanotubes." Thesis, Mississippi State University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1586984.

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Recently the theoretical discovery of single channel quantum dragons has been reported. Quantum dragons are a class of nanodevices that may have strong disorder but still permit energy-independent total quantum transmission of electrons. This thesis illustrates that multi-channel quantum dragons also exit in rectangular nanotubes and provide an approach to construct multi-channel quantum dragons in rectangular nanotubes. Rectangular nanotube multi-channel quantum dragons have been validated by matrix method based quantum transmission calculation. This work could pave the way for constructing multi-channel quantum dragons from more complex nanostructures such as single-walled zigzag carbon nanotubes and single-walled armchair carbon nanotubes.

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Masterson, Jeffrey M. "Heat transfer studies on a rectangular channel with offset plate fins." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA277300.

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Al-Maeeni, Lway. "Sub-cooled nucleate boiling flow cooling experiment in a small rectangular channel." Thesis, KTH, Fysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170396.

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4

Shrestha, Sanjeet. "WAKE CHARACTERISTICS DOWNSTREAM OF A RIGID UNSUBMERGED CYLINDER IN A RECTANGULAR CHANNEL." OpenSIUC, 2014. https://opensiuc.lib.siu.edu/theses/1379.

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Wakes form when a fluid flows past stationary objects. Within the wake, the velocity of the fluid is reduced, that is, there is a velocity defect. Limited information is available for predicting the magnitude of the velocity defects and the width of wakes that form behind rigid cylinders in open-channel flows. Therefore, the objective of this study is to develop relationships for predicting wake geometry downstream of a rigid unsubmerged cylinder. This study was conducted in a 0.46-m-wide rectangular channel with either medium sand (median size, d50 = 0.33 mm) or fine gravel (d50 = 6.35 mm) bed material. A wooden dowel (6.35 mm to 38.1 mm in diameter) was used as a rigid cylinder. Point velocity data was collected for varied hydraulic conditions; the data was used to compute the maximum velocity defect (umax) and half-width of the wake (2b1/2) at sections located different distances downstream from the cylinder (&Deltax). The data were also used to compute parameters for models that predict umax and 2b1/2 as a function of x. It was expected that the study results would yield two equations: one for predicting umax and 2b1/2; instead, the parameters varied with cylinder size and bed material. Since the results were not as expected, evaluation tests were performed to determine why the parameters varied. The evaluation tests (pump configuration tests, point-velocity repetition-tests, point-velocity sampling-time tests, and boundary-layer-development tests) revealed that the turbulent boundary layer (the layer of fluid where the effects of viscosity are significant) was not fully developed in most of the sections where point velocity data was collected. In addition, it was determined that the point-velocity sampling-time of 100 s was not sufficient for keeping the velocity measurement within 2% of the long-term mean velocity (the mean velocity based on a 500-s sample); to achieve this goal it is recommended that a 200-s sampling time should be used.
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Chong, Jen Haw. "Modelling of subcooled flow boiling in a rectangular micro-channel heat sink." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/51313/.

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Attaching micro-channel heat sinks operating under flow boiling conditions on heat sources of electronic components is an efficient cooling technique which still requires further improvements of designs. When developing this system, the efficient heat transfer performance is essential, however, this development often entangles with difficulties. The difficulties arise as existing prediction approaches are underdeveloped and inadequate to perform the accurate prediction in wide ranges of operating conditions. This inadequacy persists due to incomplete discoveries of involved mechanisms that involve fluid and dynamics for the heat transfer during the flow boiling. Also, the mechanisms involved in the flow boiling process are complicated, hindering the development of more reliable approaches. By addressing this issue, this study explores and investigates the relating mechanisms. The mechanisms of fluids during the flow boiling of subcooled liquids in micro-channel heat sinks immediately before and during the nucleation of first bubbles were explored in this study. This study then addressed the mechanisms of heat transfer enhancement of flow boiling. Later, this study repeated with different substrate materials of micro-channel heat sinks and working fluids. This study serves the purpose to better understand the involved mechanisms during the flow boiling of subcooled liquids in micro-channel heat sinks for the development of more reliable approaches to predict the heat transfer. This study regarding the mechanisms during the flow boiling in micro-channel heat sinks implemented the numerical model associated with the Volume of Fluid (VOF) in which corresponding governing equations were solved using a computational fluid dynamics (CFD). In this model, computational domains of micro-channel heat sinks in three dimensions that include the sub-domains of solids and fluid were created to consider the conjugate heat transfer for better estimation of data. The data collected in this study were from operating parameters of heat flux, mass flux, and inlet temperature of the micro-channel at 500-3197 kW/m2, 115-389 kg/m2 s, and 23-53°C, respectively. The micro-channel heat sinks operated at the atmospheric pressure, and the corresponding substrate materials chosen were steel, silicon, aluminium and copper, and working fluids selected were water and ethanol. The numerical results agree well with the experimental data from the previous study. The results show that although the bubble nucleation is absent, the heat transfer mechanisms in micro-channels possesses the nucleate boiling characteristic involving the transient conduction with the existence of the phase change process. The heat transfer mechanisms from the phase change process with the incomplete evaporation induce the ascending and descending flows and liquid-vapour mixture on the heating surfaces. From the results, four different modes of heat transfer mechanisms from the phase change process associated with ascending and descending flows and liquid vapour mixture become apparent. The ascending and descending flows on the heating surfaces appear with local increases of pressure gradients near to the heating surfaces facilitating the heat transfer enhancement due to phase change. On the other hand, the liquid-vapour mixture produced from the phase change process impeding the heat transfer. In overall, the heat transfer enhancement due to the phase change at the side surfaces in the micro-channel is more extensive as compared to the bottom surface for each condition tested in this study. Meanwhile, the amount of the liquid-vapour mixture accumulating on the bottom surface is more massive as compared to the side surfaces, leading to the impedance of the heat transfer. These heat transfer mechanisms also persist during flow boiling in micro-channels. The heat transfer enhancement due to phase change from the side and bottom surfaces also varies when employing different operating conditions before and during flow boiling. This study provides better insights for researchers and designers in industries regarding the local mechanisms for the heat transfer during the flow boiling in micro-channel heat sinks. These understandings assist the researchers to develop the more reliable prediction methods to design new and better heat transfer performance of micro-channel heat sinks and avoid repeating experiments which are costly and tedious in procedures.
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Siahaan, Ropalin. "Structural behaviour and design of rivet fastened rectangular hollow flange channel beams." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/106913/1/Ropalin_Siahaan_Thesis.pdf.

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This thesis presents a study into the structural behaviour and design of the innovative rivet fastened Rectangular Hollow Flange Channel Beams (RHFCB). The RHFCB utilizes the inexpensive self-pierce rivet fastening in its fabrication, providing cost effective structural solutions in floor systems. The first part of the thesis focuses on the section moment capacities of the beams subject to local buckling effects while the second part investigates the member moment capacities of intermediate span beams subject to the unique lateral distortional buckling effects. Each part involves experimental investigations, advanced finite element analyses, parametric studies and design recommendations.
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7

Chen, Jie. "Topological Chaos and Mixing in Lid-Driven Cavities and Rectangular Channels." Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/29863.

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Fluid mixing is a challenging problem in laminar flow systems. Even in microfluidic systems, diffusion is often negligible compared to advection in the flow. The idea of chaotic advection can be applied in these systems to enhance mixing efficiency. Topological chaos can also lead to efficient and rapid mixing. In this dissertation, an approach to enhance fluid mixing in laminar flows without internal rods is demonstrated by using the idea of topological chaos. Periodic motion of three stirrers in a two-dimensional flow can lead to chaotic transport of the surrounding fluid. For certain stirrer motions, the generation of chaos is guaranteed solely by the topology of that motion and continuity of the fluid. This approach is in contrast to standard techniques. Appropriate stirrer motions are determined using the Thurston-Nielsen classification theorem, which also predicts a lower bound on the complexity of the dynamics in the flow. Work in this area has focused largely on using physical rods as stirrers, but the theorem also applies when the ``stirrers'' are passive fluid particles. In this thesis, topological chaos is theoretically and numerically investigated in lid-driven cavities and rectangular channels without internal rods. When a two-dimensional incompressible Newtonian flow is in the Stokes flow regime, the stream function satisfies the two-dimensional biharmonic equation. When the flow occurs in a lid-driven cavity with solid side walls, this equation can be solved using a method that is similar to the traditional Fourier expansion but uses an asymptotic approximation for the sum of high order terms. When the flow occurs between two infinite plates with spatially periodic boundary conditions, an exact solution in a rectangle with finite width, which represents the flow in this infinitely-wide cavity, can be obtained by using the principle of superposition. A fully developed, three-dimensional flow in a rectangular channel can be decomposed into an unperturbed Poiseuille flow in the axial direction and a lid-driven cavity secondary flow in the cross section. This model can be applied to numerically simulate either pressure-driven flow in a rectangular channel with surface grooves or electro-osmotic flow in a rectangular channel with variations in surface potential. In this dissertation, the occurrence of topological chaos in unsteady two-dimensional flows as well as steady three-dimensional flows without internal rods is demonstrated. For appropriate choices of boundary velocity on the top and/or bottom walls, there exist three periodic points in the flows that produce a chaos-generating motion. In steady flow through a three-dimensional rectangular channel, the axial direction plays the role of time and the periodic points lie on streamtubes that â braidâ the surrounding fluid as it moves through the duct. When appropriate motion is applied on the boundary of the wide cavity or channel, topological chaos can also be generated in the flow. The stretching rate of non-trivial material lines in all these flows agrees with the prediction of the lower bound of topological entropy provided by the Thurston-Nielsen theorem. Ghost rod structures are found and analyzed in the lid-driven cavity and rectangular channel flows with solid side walls. The results suggest that the no-slip boundary condition on the stationary internal surfaces is one of the reasons for poor mixing in steady laminar three-dimensional flows considered previously with solid braided internal rods.
Ph. D.
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Sisman, H. Cigdem. "Experimental Investigation On Sharp Crested Rectangular Weirs." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610919/index.pdf.

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Sharp crested rectangular weirs used for discharge measurement purposes in open channel hydraulics are investigated experimentally. A series of experiments were conducted by measuring discharge and head over the weir for different weir heights for full width weir. It is seen that after a certain weir height, head and discharge relation does not change. Hence a constant weir height is determined. For that height
discharge and head over the weir are measured for variable weir width, starting from the full width weir to slit weir. Description of the discharge coefficient valid for the full range of weir widths and an empirical expression involving dimensionless flow variables is aimed. Experimental data obtained for this purpose and the results of the regression analysis performed are represented.
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Gharahjeh, Siamak. "Experimental Investigation On Sharp Crested Rectangular Weirs." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614379/index.pdf.

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This study is an experimental research to formulate the discharge over sharp-crested rectangular weirs. Firstly, a series of measurements on different weir heights were conducted to find the minimum weir height for which channel bed friction has no effect on discharge capacity. After determining the appropriate weir height, weir width was reduced to collect data on discharge-water head over weir relationship for a variety of different weir openings. Then, the data was analyzed through regression analysis along with utilization of global optimization technique to reach the desired formulation for the discharge. By taking advantage of a newly-introduced &ldquo
weir velocity&rdquo
concept, a simple function was eventually detected for the discharge where no discharge coefficient was involved. The behavior of the weir velocity function obtained in the present study illustrates the transition between the fully contracted and partially contracted weirs. In addition, the proposed weir velocity formulation is simple and robust to calculate the discharge for full range of weir widths.
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Pent, Jared. "Pressure Drop and Endwall Heat Transfer Effects of Porous Turbulators in a Rectangular Channel." Master's thesis, University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2196.

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This study examines the local and averaged endwall heat transfer effects of a staggered array of porous pin fins within a rectangular channel. The porous pin fins were made from aluminum and had a pore density of 10 pores per inch (PPI). The pressure drop through the channel was also determined for several flow rates and presented in terms of the friction factor. Local heat transfer coefficients on the endwall were measured using Thermochromic Liquid Crystal (TLC) sheets recorded with a charge-coupled device (CCD) camera. Static and total pressure measurements were taken at the entrance and exit of the test section to determine the overall pressure drop through the channel and explain the heat transfer trends through the channel. Results are presented for Reynolds numbers between 25000 and 130000 and a blockage ratio (blocked channel area divided by open channel area) of 50%. All results were compared to the corresponding results obtained using solid pins. All experiments were carried out in a 150 mm by 500 mm channel with an X/D of 1.72, a Y/D of 2.0, and a Z/D of 1.72 for the porous pins. It was found that for the range of Reynold's numbers tested in this study, the porous pin array consistently resulted in a larger friction factor, and therefore greater losses than a geometrically similar array of solid pins. The friction factors for the solid pin array were between 9.5 and 10.5, similar to the results found in the literature. For the porous pins, however, the friction factors were significantly increased as the Reynold's number increased, reaching as high as 15.3 at the highest Reynold's number tested. The heat transfer enhancement for the porous pins was found to be between 150 and 170% while the solid pins resulted in a heat transfer enhancement between 190 and 230%.
M.S.M.E.
Department of Mechanical, Materials and Aerospace Engineering;
Engineering and Computer Science
Mechanical Engineering MSME
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Books on the topic "Rectangular Channel"

1

Mossel, Marcel Dick. Thermal stratification of turbulent air flows in a rectangular channel. Delft: Technische Universiteit Delft, 1995.

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2

National Institute of Standards and Technology (U.S.), ed. Heat transfer in a compact heat exchanger containing rectangular channel and using helium gas. Boulder, Colo: U.S. Dept. of Commerce, National Institute of Standards and Technology, 1991.

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National Institute of Standards and Technology (U.S.), ed. Heat transfer in a compact heat exchanger containing rectangular channel and using helium gas. Boulder, Colo: U.S. Dept. of Commerce, National Institute of Standards and Technology, 1991.

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Suarez, Carlos M. Heat transfer studies and flow visualization of a rectangular channel with an offset-plate-fin array. Monterey, Calif: Naval Postgraduate School, 1996.

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Fuqua, Steven Jay. Study of the transition to turbulence within a curved rectangular channel with 40 to 1 aspect ratio. Monterey, Calif: Naval Postgraduate School, 1991.

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Longest, Jerry Mark. Flow visualization studies in (1) a curved rectangular channel with 40 to 1 aspect ratio and (2) a straight channel with imposed bulk flow unsteadiness. Monterey, Calif: Naval Postgraduate School, 1989.

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Ligrani, Phillip M. A study of Dean vortex development and structure in a curved rectangular channel with aspect ratio of 40 at Dean numbers up to 430. Cleveland, Ohio: Lewis Research Center, 1994.

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United States. National Aeronautics and Space Administration. Scientific and Technical Information Program. and U.S. Army Research Laboratory., eds. A study of Dean vortex development and structure in a curved rectangular channel with aspect ratio of 40 at Dean numbers up to 430. [Washington, D.C.]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1994.

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Bukhari, Nisar Hussain. Development and use of rectangular channels with a single current ... Lahore: Pakistan National Program, International Irrigation Management Institute, 1998.

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Almquist, Charles W. Transverse mixing in meandering laboratory channels with rectangular and naturally varying cross sections. Austin, Tex: Center for Research in Water Resources, Bureau of Engineering Research, Dept. of Civil Engineering, University of Texas, 1985.

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Book chapters on the topic "Rectangular Channel"

1

Hager, Willi H. "Hydraulic Jump in Non-Rectangular Channel." In Energy Dissipators and Hydraulic Jump, 53–66. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-015-8048-9_4.

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Zhang, Bo, Gefan Jiang, Peichao Zhai, and JianQiang Shan. "Development of Subchannel Code for Plate-Type Fuel Plus Verification." In Springer Proceedings in Physics, 381–95. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1023-6_34.

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AbstractThe fuel shape and flow path structure of the plate-type fuel reactor are different from those of the conventional rod-bundle reactor, which leads to the difference between the thermal-hydraulic phenomenon and thermal conduction in the rod bundle assembly. Therefore, in this thesis, the subchannel analysis model and code applied to the plate-type fuel reactor are developed. The calculation results of the code are compared with the simulation results of FLUENT and MATRA and the experimental results of the flow and heat transfer of the rectangular channel, so that the code is verified.This thesis first fully investigated the thermal-hydraulic and friction models applicable to rectangular flow channels, and developed the plate-type fuel heat conduction model and flow redistribution model. On the basis of the existing two-fluid three-field subchannel code, the subchannel analysis software for the plate type fuel reactor was developed. The comparison with the rectangular channel heat transfer experiment shows that the code can accurately predict the heat transfer coefficient under the rectangular channel. The comparison and verification with the simulation calculation results of the MTR reactor under steady-state conditions with the FLUENT and MATRA codes show that the developed subchannel code can simulate the thermal-hydraulic phenomena of the plate fuel assembly. Finally, according to the calculation results of the MTR reactor by the code, the thermal-hydraulic characteristics of the plate fuel reactor are analyzed, and the safety of the plate fuel is evaluated.
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Kawamura, Fusao, Yohji Seki, Kaoru Iwamoto, and Hiroshi Kawamura. "DNS of Turbulent Channel Flow Obstructed by Rectangular Ribs." In Frontiers of Computational Science, 215–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-46375-7_28.

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Benesty, Jacob, and Jingdong Chen. "Single-Channel Noise Reduction with a Rectangular Filtering Matrix." In Optimal Time-Domain Noise Reduction Filters, 23–41. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19601-0_3.

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Newman, J. N. "The Green function for potential flow in a rectangular channel." In Problems in Applied, Industrial and Engineering Mathematics, 51–59. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2440-9_4.

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Rogovyi, Andrii, Artem Neskorozhenyi, Sergey Krasnikov, Irina Tynyanova, and Serhii Khovanskyi. "Improvement of Vortex Chamber Supercharger Performances Using Slotted Rectangular Channel." In Lecture Notes in Mechanical Engineering, 552–61. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-16651-8_52.

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Huang, Jun, Qiu-Wang Wang, Yan-Ping Huang, and Bo-Feng Bai. "Analytical Model Study of Critical Heat Flux in Rectangular Narrow Channel." In Challenges of Power Engineering and Environment, 1007–10. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-76694-0_186.

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Wang, Jiangwen, Puzhen Gao, and Chong Chen. "Experimental Study on Natural Circulation Flow in Rectangular Channel Under Rolling." In Proceedings of The 20th Pacific Basin Nuclear Conference, 771–80. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-2314-9_70.

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Arslan, Sinem, and Münevver Tezer-Sezgin. "Finite Difference Solutions of 2D Magnetohydrodynamic Channel Flow in a Rectangular Duct." In Lecture Notes in Computational Science and Engineering, 63–71. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-55874-1_5.

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Mnassri, Souad, and Ali Triki. "On the Unidirectional Free-Surface Flow Solution in a Rectangular Open Channel." In Applied Condition Monitoring, 79–86. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-76517-0_10.

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Conference papers on the topic "Rectangular Channel"

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Lu, Donghua. "Flow Instability Study in Rectangular Channel." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29114.

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The density wave oscillation (DWO) was investigated with parallel rectangular channel test sections, which have 2mm*25mm flow cross section. Test parameters are pressure 1MPa–10MPa, mass velocity 200kg/m2s–800kg/m2, and inlet subcooling 10°C–50°C. The experimental data show that heat flux rises with high mass velocity, inlet subcooling or system pressure at the stable/unstable boundary. In them, increasing mass velocity can greatly improve stability of this two parallel channel system. Period of the oscillation becomes shorter while mass velocity rises, but when inlet subcooling is increased, it becomes longer. The comparison between data from rectangular channels and round tubes indicates they have the same trend based on the dimensionless phase change number and subcooling number.
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Ng, Charles H. "An industrial world channel router for non-rectangular channels." In the 23rd ACM/IEEE conference. New York, New York, USA: ACM Press, 1986. http://dx.doi.org/10.1145/318013.318091.

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Ng, C. H. "An Industrial World Channel Router for Non-Rectangular Channels." In 23rd ACM/IEEE Design Automation Conference. IEEE, 1986. http://dx.doi.org/10.1109/dac.1986.1586133.

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Popescu, Aristotel, James R. Welty, David Pfund, and David Rector. "Thermal Measurements in Rectangular Microchannels." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32442.

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This paper reports on an experimental study of heat transfer in high aspect ratio (width/depth), rectangular micro-channels. A single channel with width of 10 μm was cut into polycarbonate spacers of various thicknesses, resulting in channel depths of 128 μm, 263 μm and 521 μm. Heat transfer experiments were performed with a constant heat flux boundary condition applied at the surface of the channel. Experiments conducted for refrigerant R-124 working fluid in the range Re = 300 − 900 and Pr = 3.6 − 3.8 showed small or no departure from macro-scale predictions for channels with hydraulic diameters larger than 500 μm. Results for the 80:1 aspect ratio channel showed a significant departure from theoretical predictions. Experimental values of local Nusselt numbers were approximately 25 percent lower than predicted using macro-scale theory.
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Liu, Yusheng, Chunming Zhang, Sichao Tan, Lijing Wen, and Shuai Ma. "Study of Pulsating Laminar Flow Field and Resistance Characteristics in Rectangular Channel." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-16131.

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Pulsating laminar flow field and resistance characteristics in rectangular channel are investigated analytically and experimentally. Mathematical model is established. The influences of flow fluctuation period on the flow field in rectangular channel are analyzed. The velocity gradient in the pulsating laminar flow is compared with that in the steady laminar. Analytical results are verified by experiment. The results show that flow pulsation causes phase difference between the velocity and pressure drop. Compared with steady flow filed, the flow field changes a lot under pulsating condition due to the oscillating velocity component. The velocity gradient in the pulsating laminar flow is changed periodically by the oscillating velocity component, which leads some change in friction coefficient.
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Singh, Dalwinder, Zhen Hu, and Robert Qiu. "UWB channel sounding and channel characteristics in rectangular metal cavity." In Southeastcon 2008. IEEE, 2008. http://dx.doi.org/10.1109/secon.2008.4494313.

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He, Qingche, Liangming Pan, Luteng Zhang, Meiyue Yan, and Wangtao Xu. "Research on the Air-Water Flow Regime and Characteristics in Rectangular Channel." In 2021 28th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/icone28-66238.

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Abstract Two-phase Flow is widely involved in reactor design and is directly relevant to reactor safety. However, the flow regime in narrow rectangular channels still needs further study because it has a considerable difference from tube and bundle channels. To investigate the two-phase flow regime and interfacial structure characteristics, the air-water experiment with an adiabatic vertical channel of 4 × 66 × 1800, 6 × 66 × 1800 mm have been conducted under atmosphere pressure condition. The impedance void meter was used to measure the global void fraction in narrow rectangular channels. A high-speed camera was used to record the profiles of the flow regime. The flow regime was identified by the random forest clustering algorithm based on a training sample. The profiles of different parameters, including void fraction, pressure loss at Z/D = 150, were analyzed in this paper. Furthermore, based on the parameters’ distribution, the regime transition criteria in narrow rectangular channels were discussed. It is shown that the transition from bubble to slug flow always occurred when the average void fraction is 0.17–0.2. The transition value is 0.57–0.62 when the slug Flow changes to the churn-turbulent Flow and 0.78–0.8 from churn-turbulent to annular Flow. The constant used in the Lockhart-Martinelli correlation is found to calculate the frictional pressure drop in a rectangular channel. Furthermore, the drift-model applied to the rectangular channel is verified.
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Liu, Lifang, Daogang Lu, and Quanxing Li. "Numerical Simulation of Vortex Shedding From Elongated Rectangular Cylinders in a Rectangular Channel." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29679.

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A two-dimensional code was developed to simulate vortex shedding characteristic and flow-structure interaction (FSI) of plate-type structures. In the code the physical component boundary fitted coordinate (PCBFC) was used to deal with the curve boundary. The arbitrary Lagrangian Eulerian (ALE) method was used to realize the grid movement. A barrier unit idea was adopted to deal with the boundary of fluid domain and solid domain in the code. The code was validated by comparing the numerical simulation results with experimental data. It was found that the vortex shedding phenomena in case of rectangular cylinder are strongly related to the length of the rectangular cylinder in the stream line.
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Chen, Chong, and Puzhen Gao. "Heat Transfer Correlation for Boiling Flows in Vertical Rectangular Narrow Channel." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-16616.

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In view of the practical significance of a correlation of heat transfer coefficient in the aspect of such applications as engineering and predictive, some efforts towards correlating flow boiling heat transfer correlation for vertical rectangular narrow channels have been made in this paper. Based on analyses of existing general correlations for flow boiling heat transfer, it is found that general correlations are not suitable to predict heat transfer coefficients in narrow channels. By considering the suppression factor S and two-phase pool boiling heat transfer coefficient hnb, introducing boiling number Bo and two-phase friction multiplier ϕtt2, the Chen correlation has been modified to be used for narrow channels. The flow boiling heat transfer was the function of boiling number Bo and two-phase friction multiplier ϕtt2, the coefficients have a regular change with the increase of boiling number Bo or two-phase friction multiplier ϕtt2. A comparison of the newly developed correlation with the existing data for narrow channels shows a satisfactory agreement. The heat transfer coefficient of the narrow channel was well predicted by the new correlation and the deviation within ±20%.
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Monde, Masanori, H. Kusuda, H. Uehara, and T. Nakaoka. "BOILING HEAT TRANSFER IN A NARROW RECTANGULAR CHANNEL." In International Heat Transfer Conference 8. Connecticut: Begellhouse, 1986. http://dx.doi.org/10.1615/ihtc8.4100.

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Reports on the topic "Rectangular Channel"

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Cai, Y., M. W. Wambsganss, and J. A. Jendrzejczyk. Application of chaos theory in identification of two-phase flow patterns and transitions in a small, horizontal, rectangular channel. Office of Scientific and Technical Information (OSTI), February 1996. http://dx.doi.org/10.2172/207657.

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Bentley, C. L., and A. E. Ruggles. Phase distribution measurements in narrow rectangular channels using image-processing techniques. Office of Scientific and Technical Information (OSTI), June 1992. http://dx.doi.org/10.2172/10144046.

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Bentley, C. L., and A. E. Ruggles. Phase distribution measurements in narrow rectangular channels using image-processing techniques. Office of Scientific and Technical Information (OSTI), June 1992. http://dx.doi.org/10.2172/5349611.

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Tran, T. N., M. W. Wambsganss, and D. M. France. Boiling heat transfer with three fluids in small circular and rectangular channels. Office of Scientific and Technical Information (OSTI), January 1995. http://dx.doi.org/10.2172/93485.

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Olson, Douglas A. Heat transfer in a compact heat exchanger containing rectangular channels and using helium gas. Gaithersburg, MD: National Institute of Standards and Technology, 1991. http://dx.doi.org/10.6028/nist.ir.3959.

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Landram, C. S. Structural stability of a rectangular, simply-supported beam subject to a sudden air temperature change next to one surface. Office of Scientific and Technical Information (OSTI), July 1997. http://dx.doi.org/10.2172/605169.

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