Academic literature on the topic 'UPSTREEM LENGHT'

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Journal articles on the topic "UPSTREEM LENGHT"

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Baskaran, Kabilan, and K. Srinivasan. "Effects of upstream pipe length on pipe-cavity jet noise." Physics of Fluids 31, no. 10 (2019): 106103. http://dx.doi.org/10.1063/1.5120460.

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Kozak, M. "Effects of intercistronic length on the efficiency of reinitiation by eucaryotic ribosomes." Molecular and Cellular Biology 7, no. 10 (1987): 3438–45. http://dx.doi.org/10.1128/mcb.7.10.3438-3445.1987.

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Simian virus 40-based plasmids that direct the synthesis of preproinsulin during short-term transfection of COS cells have been used to probe the mechanism of reinitiation by eucaryotic ribosomes. Earlier studies from several laboratories had established that the ability of ribosomes to reinitiate translation at an internal AUG codon depends on having a terminator codon in frame with the preceding AUG triplet and upstream from the intended restart site. In the present studies, the position of the upstream terminator codon relative to the preproinsulin restart site has been systematically varie
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Kozak, M. "Effects of intercistronic length on the efficiency of reinitiation by eucaryotic ribosomes." Molecular and Cellular Biology 7, no. 10 (1987): 3438–45. http://dx.doi.org/10.1128/mcb.7.10.3438.

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Simian virus 40-based plasmids that direct the synthesis of preproinsulin during short-term transfection of COS cells have been used to probe the mechanism of reinitiation by eucaryotic ribosomes. Earlier studies from several laboratories had established that the ability of ribosomes to reinitiate translation at an internal AUG codon depends on having a terminator codon in frame with the preceding AUG triplet and upstream from the intended restart site. In the present studies, the position of the upstream terminator codon relative to the preproinsulin restart site has been systematically varie
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El-Molla, Mohamed A., Naveen Y. Saad, and Gada S. Ezizah. "Evaluation of Actual Creep Length Under Heading up Structures Aprons." Journal of Engineering Research [TJER] 13, no. 1 (2017): 14. http://dx.doi.org/10.24200/tjer.vol13iss1pp14-23.

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In this paper a 2D finite element model (SEEP2D) is implemented to study the actual head loss along the sheet piles fixed at the ends of an apron of a heading up structure. Different scenarios for the thickness of the pervious layer under the apron, the length of the apron and the depths of the upstream and downstream sheet piles are studied. Results show that assuming the outer and inner faces of the sheet piles have the same weight for estimating the creep length while designing aprons of hydraulic structures is weak. Design equations for the actual head loss along the outer and inner faces
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El-Molla, Mohamed, Naveen Y. Saad, and Gada S. Ezizah. "Evaluation of Actual Creep Length Under Heading up Structures Aprons." Journal of Engineering Research [TJER] 15, no. 2 (2018): 114. http://dx.doi.org/10.24200/tjer.vol15iss2pp114-123.

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In this paper a 2D finite element model (SEEP2D) is implemented to study the actual head loss along the sheet piles fixed at the ends of an apron of a heading up structure. Different scenarios for the thickness of the pervious layer under the apron, the length of the apron and the depths of the upstream and downstream sheet piles are studied. Results show that assuming the outer and inner faces of the sheet piles have the same weight for estimating the creep length while designing aprons of hydraulic structures is weak. Design equations for the actual head loss along the outer and inner faces
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El-Molla, Mohamed, Naveen Y. Saad, and Gada S. Ezizah. "Evaluation of Actual Creep Length Under Heading up Structures Aprons." Journal of Engineering Research [TJER] 15, no. 2 (2018): 14. http://dx.doi.org/10.24200/tjer.vol15iss2pp14-23.

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In this paper a 2D finite element model (SEEP2D) is implemented to study the actual head loss along the sheet piles fixed at the ends of an apron of a heading up structure. Different scenarios for the thickness of the pervious layer under the apron, the length of the apron and the depths of the upstream and downstream sheet piles are studied. Results show that assuming the outer and inner faces of the sheet piles have the same weight for estimating the creep length while designing aprons of hydraulic structures is weak. Design equations for the actual head loss along the outer and inner faces
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Wilkinson, John C., Enrique Cepero, Lawrence H. Boise, and Colin S. Duckett. "Upstream Regulatory Role for XIAP in Receptor-Mediated Apoptosis." Molecular and Cellular Biology 24, no. 16 (2004): 7003–14. http://dx.doi.org/10.1128/mcb.24.16.7003-7014.2004.

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ABSTRACT X-linked inhibitor of apoptosis (XIAP) is an endogenous inhibitor of cell death that functions by suppressing caspases 3, 7, and 9. Here we describe the establishment of Jurkat-derived cell lines stably overexpressing either full-length XIAP or a truncation mutant of XIAP that can only inhibit caspase 9. Characterization of these cell lines revealed that following CD95 activation full-length XIAP supported both short- and long-term survival as well as proliferative capacity, in contrast to the truncation mutant but similar to Bcl-xL. Full-length XIAP was also able to inhibit CD95-medi
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Tanga, A., M. G. Ishak, S. R. Oktavia, and Y. Arafat. "Effect of the length of the weir wall sections on hydraulic characteristics of labyrinth weir." IOP Conference Series: Earth and Environmental Science 1355, no. 1 (2024): 012025. http://dx.doi.org/10.1088/1755-1315/1355/1/012025.

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Abstract A labyrinth spillway is a weir to increase the length of the weir wall within a fixed width, by the zig-zag plan shape. The weir wall of the labyrinth spillway consists of upstream, downstream, and sidewall. To increase the performance, it is good to modifications of the length of the weir wall of the spillway. In this regard, several studies have been published, however, the effect of changing the length of the weir wall section has not been addressed. To fill this gap, this study aims to compare the hydraulic characteristics of flow over 4 physical models of labyrinth spillway by va
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Yoon, J. Y., N. W. Sung, and C. H. Lee. "Effect of distance between 90° elbow close to upstream of orifice plate and the orifice plate on discharge coefficient." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 223, no. 2 (2009): 97–100. http://dx.doi.org/10.1243/09544089jpme197.

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The effect of distance between 90° elbow close to the upstream face of an orifice plate and the orifice plate on discharge coefficient was investigated. The distribution of discharge coefficient and differential pressure caused by elbow and short upstream straight length were examined and a modified discharge coefficient was introduced. The results presented in this study could be useful when the orifice plate is installed under the condition of simple flow disturbance element and short upstream straight length.
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Yang, Shanshan, Quanyuan Zeng, Xiaohua Zhang, Chunzhu Dong, and Ling Guan. "Numerical Simulation of Single Droplet Impingement upon Dynamic Liquid Film Obliquely." Mathematics 10, no. 17 (2022): 3193. http://dx.doi.org/10.3390/math10173193.

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To better understand the application of droplet impingement in industry and agriculture, in this paper, the coupled level set and volume of fluid (CLSVOF) method is applied to study droplet oblique impact on a dynamic liquid film. The conclusions are the following: the downstream crown height increases and then decreases as the impact angle increases, whereas upstream crown height and spreading length decrease significantly; moreover, the spreading length and upstream crown height increase with the increase of film velocity, while the downstream crown height decreases instead. The increase of
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Dissertations / Theses on the topic "UPSTREEM LENGHT"

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Clawson, Bradley C. "The Effects of Upstream Straight Pipe Length on Magnetic Flow Meter Accuracy." DigitalCommons@USU, 2016. https://digitalcommons.usu.edu/etd/5053.

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In closed conduit water systems, being able to accurately measure flow is absolutely essential. For many meter designs, including electromagnetic induction meters (also known as magnetic flow meters), the greatest accuracy is achieved when the device is calibrated correctly. Optimal meter accuracy often depends on the flow conditions associated with the upstream geometry in the pipe system. Manufacturers typically give standards for the length of straight pipe required upstream of the meter. These standards vary, however, and do not address every possible configuration that may be installed up
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ARYA, ADITYA. "SCOUR AROUND DIFFERENT SHAPES OF PIERS AT DIFFERENT ORIENTATION WITH FLOW." Thesis, 2014. http://dspace.dtu.ac.in:8080/jspui/handle/repository/15500.

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Scour is the process of local lowering of stream bed elevation which takes place in the vicinity or around a structure constructed in flowing water. Scour takes place around bridge piers, abutments, around spurs, jetties and breakwaters due to modification of flow pattern in such a way as to cause increase in local shear stress. Due to improper knowledge of scour around bridge pier, there were lots of bridges failure cases faces by our country which leads to economic loss and life loss. To understand the phenomenon of local scour around piers an attempt is done by experiment on different shape
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Books on the topic "UPSTREEM LENGHT"

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Multiphase Flow Internal Corrosion Direct Assessment (MP-ICDA) Methodology for Pipelines. AMPP, 2022. https://doi.org/10.5006/nace_sp0116-2022.

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Scope This standard practice outlines a methodology to assess pipeline integrity because of the threat internal corrosion in onshore and offshore pipelines and other piping systems that normally carry multiphase fluids (gas, water, and oil) termed multiphase flow internal corrosion direct assessment (MP-ICDA). Liquid separators (drips), compressing stations, vessels, and other equipment not related to pipelines are not included in this standard. This standard applies to pipelines, and piping systems both onshore and offshore, containing carbon dioxide (CO2), hydrogen sulfide (H2S), oxygen (O2)
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Book chapters on the topic "UPSTREEM LENGHT"

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Wang, Bin, Weitong Pan, Longfei Tang, et al. "Effect of Flow Channel Blockage on the Scale-Up of Proton Exchange Membrane Fuel Cells." In Proceedings of the 10th Hydrogen Technology Convention, Volume 1. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-8631-6_31.

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AbstractOptimizing flow field structure can effectively improve the performance of Proton Exchange Membrane Fuel Cell (PEMFC). Adding the block in the flow channel is one of the approaches. In this work, the enhanced transport characteristic of the block is re-examined, and its effect on the performance of the fuel cell scale-up is further revealed. The models of single-channel fuel cells with different lengths L and blockage ratio β are developed. Results show that the best cell performance exhibits when β = 100% due to the combined effect of the block and upstream zone. The convection appear
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Missing, Timothy, and Holger Babinsky. "Unsteady Three-Dimensional Oblique Shock Wave Boundary-Layer Interactions." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-86605-0_8.

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Abstract Turbulent oblique Shock Wave Boundary Layer Interactions (SBLIs) were investigated experimentally in two rectangular test section blow down-type supersonic wind tunnels, to examine three-dimensionality induced by the presence of side-walls, as well as the low frequency separation bubble breathing oscillation. Testing was performed at Mach 2.5 and 2, with incident shock deflection angles of $$8^{\circ }$$ 8 ∘ and $$12^{\circ }$$ 12 ∘ at the Cambridge University (UCAM) and TU Delft (TUD) supersonic wind tunnel facilities respectively. In the UCAM facility, Conical shaped artificial corn
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Wang, Xiaodong, Jinchao Xu, Long Zhu, Donghui Zhou, and Jun Zhao. "Study on the Unsteady Flow of the Approach Channel’s Entrance." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_59.

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AbstractThe entrance of shiplock’s approach channel always exist a mixing shear layer caused by the shear mixing layer, where is the junction of main river flow and the quiescent water of the approach channel. The flow structure of the turbulent mixing area presented as large-scale vortices frequently and periodically. And the fluctuations of the water surface and velocity induced by the separation of vortices may threat the navigation conditions, which should be considered during the engineering designing. The existing studies regard the mixing shear layer as steady flow and only take care of
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Nel, Philipp, Anne-Marie Schreyer, and Marius Swoboda. "Shock Oscillation Mechanisms of Highly Separated Transitional Shock-Wave/Boundary-Layer Interactions." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-86605-0_16.

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Abstract At cruise altitude, low Reynolds numbers result in a laminar boundary layer on the suction side of a transonic fan blade, extending to the shockwave/boundary-layer interaction. For transitional SBLIs with significant shock-induced separation, a shock oscillation mechanism occurs, characterized by the growth and natural suppression of the upstream laminar section of the separation bubble. The authors utilize a combination of numerical and experimental techniques across various cases, including a canonical case, cascades, and a 3D fan, to investigate the phenomenon. To validate the dyna
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Chen, Yuyuan. "Study on the Movement Characteristics of Fire Smoke in V-Shaped Tunnel Under the Chimney Effect." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220876.

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Analyze the force of fire smoke in a double-slope coupled V-shaped tunnel to study the influence of tunnel slope, the distance between the change slope point and the fire source on fire wind pressure, determine the basic characteristics of smoke movement, and use numerical simulation to spread the smoke authenticating. The results of the study show that when the smoke spreads to the left (upstream) of the slope change point of the tunnel, and with the increase of the slope, the temperature of the upstream top plate gradually decreases to the ambient temperature, and the smoke layer shows a par
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Sobey, I. J. "Prediction Of Separation From A Cylinder." In Introduction to Interactive Boundary Layer Theory. Oxford University PressOxford, 2000. http://dx.doi.org/10.1093/oso/9780198506751.003.0007.

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Abstract The length scales needed to resolve the singularity at the trailing edge of plate were simultaneously applied to separation in a compressible flow by Stewart son and Williams (1969) and Neiland (1969). In compressible flow separation can occur ahead of the place where an oblique shock interacts with a wall and the spontaneous nature of this upstream separation was something of a puzzle since the mechanism by which a disturbance could be propagated upstream of the wall-shock interaction in a supersonic flow was unclear, see, for example, Reyhner and Flilgge-Lotz (1968).
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Riddle, A. M., and R. E. Lewis. "The Effect of the Tidal Barrage on the Flows and Mixing in the Tees Estuary." In Mixing and Dispersion in Stably Stratified Flows. Oxford University PressOxford, 1999. http://dx.doi.org/10.1093/oso/9780198500155.003.0035.

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Abstract The Tees estuary has recently been transformed by the construction of a barrage which has reduced the tidal length from 44 km to 18 km. The barrage now restricts the upstream movement of the salt resulting in the formation of a new freshwater region to landward. Surveys undertaken before and after construction of the barrage, in 1990 and 1995 respectively, have demonstrated changes to the hydrographic conditions in the estuarial waters.
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Zhou, Yiling, Hefang Jing, Weihong Wang, and Qiutong Chen. "Experimental Study on Water Flow Characteristics in Open Channels with Floating Rigid Vegetation Groups." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220961.

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To explore the water flow characteristics under the action of floating rigid vegetation groups, several laboratory tests are conducted in a flume of North Minzu University, in which floating rigid vegetation is replaced by glass rods. In the tests, two groups of vegetation are placed at different positions of the flume and the vegetation length into the water is changed. Experimental results show that both the upstream water level of the vegetation group and water surface slope along the way grow with the increasement of the length of the vegetation root. When vegetation root becomes longer, t
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Graf, William L. "Sediment and Plutonium Storage Upstream from Cochiti." In Plutonium and the Rio Grande. Oxford University Press, 1995. http://dx.doi.org/10.1093/oso/9780195089332.003.0014.

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The foregoing chapters demonstrated that large amounts of sediment and much of the plutonium entering the Northern Rio Grande have been stored along the river channel. A composite budget analysis gives the quantities of materials involved annually, but except in very broad terms it does not describe where the materials are stored. It is a matter of scale: The budget indicates the overall quantities of sediment and plutonium stored in the system but does not reveal on a local scale where one might search for the materials. The next chapters show that the storage process has particular geographi
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Bang, Joo Young, Il won Seo, and Byeong Uk Kim. "Separation flow characteristics upstream of finite crest length weir with a downstream ramp." In River Flow 2020. CRC Press, 2020. http://dx.doi.org/10.1201/b22619-26.

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Conference papers on the topic "UPSTREEM LENGHT"

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Kim, Hong-Min, Kwang-Yong Kim, Jae-Young Her, and Young-Chul Ha. "Three-Dimensional Flow Analysis for Estimation of Measuring Error of Orifice Flowmeter Due to Upstream Flow Distortion." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31081.

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Three-dimensional pipe flows with elbows and tees are calculated to estimate the effect of upstream flow distortion on measuring accuracy of orifice flow meter. Axisymmetric flows through orifice are calculated first to evaluate the performances of various numerical schemes and turbulence models. In three-dimensional calculations of the flow in pipe system, it is evaluated how the pressure difference across the orifice is dependent on the length of upstream straight pipe in a branch. From the results, it is found that, regardless of flow rate, the effect of the length can be neglected for the
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He, Manman, Weining Liu, Yi Tang, et al. "Prediction of Queue Length Considering Upstream Ramp Flow under Abnormal Events on Expressway." In 21st COTA International Conference of Transportation Professionals. American Society of Civil Engineers, 2021. http://dx.doi.org/10.1061/9780784483565.056.

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Lee, Sang-Youp, Jaesung Jang, and Steve T. Wereley. "Entrance Length of Low Reynolds Number Flow in Microchannel." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61908.

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The entrance lengths in rectangular microchannels with planar reservoirs, geometries typically produced with microfabrication techniques, have been investigated in the low Reynolds number range, 1 < ReD < 100. Two microchannels having the complementary aspect ratios (H/W) of 2.75 and 0.37 are fabricated and tested. The hydraulic diameters of two microchannels are ~370 μm and ~56.4 μm. μPIV is used to measure the velocity profiles and the entrance lengths are found from the curve fitted centerline velocity growth. The entrance lengths in the channels with planar upstream reservoir
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Pickett, Lyle M., and Dennis L. Siebers. "Orifice Diameter Effects on Diesel Fuel Jet Flame Structure." In ASME 2001 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-ice-399.

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Abstract The effects of orifice diameter on several aspects of diesel fuel jet flame structure were investigated in a constant-volume combustion vessel under heavy-duty, direct-injection (DI) diesel engine conditions using Phillips research grade #2 diesel fuel and orifice diameters ranging from 45 μm to 180 μm. The overall flame structure was visualized with time-averaged OH chemiluminescence and soot luminosity images acquired during the quasi-steady portion of the diesel combustion event that occurs after the transient premixed burn is completed and the flame length is established. The lift
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"Numerical Investigation of the Recirculation Zone Length Upstream of the Round-Nosed Broad Crested Weir." In Sept. 8-10, 2017 Istanbul (Turkey). URST, 2017. http://dx.doi.org/10.17758/urst.u0917303.

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Peng, Yuhua, and Guangyu Chen. "Study on the Length of Upstream Transition Section in Reconstruction and Expansion Area of Secondary Highway." In 21st COTA International Conference of Transportation Professionals. American Society of Civil Engineers, 2021. http://dx.doi.org/10.1061/9780784483565.129.

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Lee, Jang Il, Ae Ju Cheong, and Bok Ki Min. "A Numerical Study on Flow Characteristics Through Orifice Flowmeter and Measurement Accuracy Depending on Upstream Straight Length." In ASME 2017 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/fedsm2017-69033.

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In this numerical study, Commercial CFD (Computational Fluid Dynamics) code, ANSYS CFX ver. 17.1, is used to analyze the 3-Dimensional flow characteristics through orifice plate (β = 0.6) with two 90 degree bends in different planes. The purpose of this numerical study is to evaluate measurement accuracy and flow characteristics of orifice flowmeter depending on upstream straight length from 12D to 56D. Thus, numerical calculations of pressure drop caused by swirling flow and distortion of axial velocity profile on orifice plate are performed by using numerical analysis. In addition, numerical
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Iga, Yuka, Hayato Nishitanaka, and Yoshida Yoshiki. "Numerical Analysis of Influence of Pipe Length on Cavitation Surge." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-06066.

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Generally, in boundary condition of numerical simulation of internal flow, flow velocity is fixed in the inlet boundary and static pressure is fixed in the outlet boundary or the inverse condition, which is supposed that upstream and downstream pipes and the uniform flows inside the pipes extend infinitely from the boundaries. Therefore, a numerical simulation of influence of pipe length of fluid machinery cannot be realized by changing a boundary position of the computational region. In the present study, a boundary condition which is taking into account a pipe length is used to numerical sim
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Luk, K. F., R. M. C. So, S. C. Kot, Y. L. Lau, and R. C. K. Leung. "Airfoil Vibration Due to Upstream Alternating Vortices Generated by a Circular Cylinder." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33011.

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An experimental investigation of airfoil vibration due to upstream alternating vortices was carried out in a re-circulating wind tunnel. A circular cylinder with a diameter D = 102mm was positioned upstream of an airfoil (NACA0012), with a chord length c = 200mm and a zero angle of attack placed at a gap distance S, to generate the vortex street. The circular cylinder and airfoil were arranged in tandem and the spacing ratio S/D was varied from 0.5 to 6.5 to investigate the effect of the vortices generated upstream on the vibration of the airfoil. The experiment was carried out in a free strea
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Namet-Allah, A., and A. M. Birk. "Experimental Investigation of the Effects of Nozzle Length on the Performance of Low Mach Number Air-Air Ejector With Entraining Diffuser." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-94069.

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The core flow separation in air-air ejectors is significantly affected by the length of the exhaust nozzle. This length was changed by moving the annulus’ center body end 4, 7, and 12 cm upstream and 1 cm downstream of the nozzle inlet. The velocity profiles at the nozzle exit were measured at different mass flow rates and at 10, 20 and 30 degree swirl angles. These measurements were also conducted at two annulus’ center body end positions with elliptical and square shapes, 12 and 7 cm upstream of the nozzle inlet, using two nozzle exit diameters. At 4, 7, and 12 cm upstream and 1 cm downstrea
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Reports on the topic "UPSTREEM LENGHT"

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Hoben, Ryan, Howard Park, Matthew Newcomb, and Harper McCraw. Montgomery Locks and Dam, Ohio River : navigation approach physical model. Engineer Research and Development Center (U.S.), 2025. https://doi.org/10.21079/11681/49548.

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A physical model study of the Montgomery Locks and Dam was conducted to optimize the navigation conditions for the new riverside lock and guard wall design developed by the Pittsburgh District. A 1:100 Froude scale physical model was built to evaluate the navigation conditions for tows entering and exiting the locks in the upstream and downstream approaches. Conditions tested were Existing Conditions, Deconstruction Sequences, Construction Sequences, and Proposed Design. Data were also collected for impact analysis on the upstream and downstream riverside guard walls. The final design consiste
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Friedman, Haya, Julia Vrebalov, James Giovannoni, and Edna Pesis. Unravelling the Mode of Action of Ripening-Specific MADS-box Genes for Development of Tools to Improve Banana Fruit Shelf-life and Quality. United States Department of Agriculture, 2010. http://dx.doi.org/10.32747/2010.7592116.bard.

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Fruit deterioration is a consequence of a genetically-determined fruit ripening and senescence programs, in which developmental factors lead to a climacteric rise of ethylene production in ethylene-sensitive fruits such as tomato and banana. Breeding of tomato with extended fruit shelf life involves the incorporation of a mutation in RIN, a MADS-box transcription factor participating in developmental control signalling of ripening. The RIN mode of action is not fully understood, and it may be predicted to interact with other MADS-box genes to execute its effects. The overall goal of this study
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