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Artykuły w czasopismach na temat „Corrugation height”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Abtahi, Arman, and J. M. Floryan. "Natural convection in a corrugated slot." Journal of Fluid Mechanics 815 (February 23, 2017): 537–69. http://dx.doi.org/10.1017/jfm.2017.73.

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Analysis of natural convection in a horizontal slot formed by two corrugated isothermal plates has been carried out. The analysis is limited to subcritical Rayleigh numbers$Ra$where no secondary motion takes place in the absence of corrugations. The corrugations have a sinusoidal form characterized by the wavenumber, the upper and lower amplitudes and the phase difference. The most intense convection occurs for corrugation wavelengths comparable to the slot height; it increases proportionally to$Ra$and proportionally to the corrugation height. Placement of corrugations on both plates may eithe

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2

Bhattacharyya, Suvanjan, Debraj Sarkar, Ulavathi Shettar Mahabaleshwar, Manoj K. Soni, and M. Mohanraj. "Experimental study of thermohydraulic characteristics and irreversibility analysis of novel axial corrugated tube with spring tape inserts." European Physical Journal Applied Physics 92, no. 3 (2020): 30901. http://dx.doi.org/10.1051/epjap/2020200192.

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The current study experimentally investigates the heat transfer augmentation on the novel axial corrugated heat exchanger tube in which the spring tape is introduced. Air (Pr = 0.707) is used as a working fluid. In order to augment the thermohydraulic performance, a corrugated tube with inserts is offered. The experimental study is further extended by varying the important parameters like spring ratio (y = 1.5, 2.0, 2.5) and Reynolds number (Re = 10 000–52 000). The angular pitch between the two neighboring corrugations and the angle of the corrugation is kept constant through the experiments

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Vipin, V. P., and P. A. Krishnan Dr. "A FINITE ELEMENT STUDY ON THE PERFORMANCE OF CORRUGATED STEEL SECTIONS UNDER COMPRESSION." International Journal of Emerging Technologies and Innovative Research Volume 4, Issue 5 May-2017 eISSN: 2349-5162 (2017): 249–51. https://doi.org/10.5281/zenodo.583727.

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Corrugated steel sections are having a wide variety of applications in engineering fields like civil, mechanical, aviation, etc. The unique properties of corrugated steel sections make them a better option compared to the conventional thin steel sections. In the current study behaviour of thin steel shells with corrugations made of mild steel plates under compression is investigated using finite element software ABAQUS. The corrugated sections and the conventional sections under study are having the same area of cross section. For the corrugated sections, trapezoidal profile was used with corr

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Hou, Dan, Biao Tan, Binghao Shi, and Zheng Zhong. "Aerodynamic Effects of Time-Varying Corrugations on Dragonfly Wings in Flapping Flight." Biomimetics 9, no. 7 (2024): 433. http://dx.doi.org/10.3390/biomimetics9070433.

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The aerodynamic effects of wing corrugation on insect flight have received widespread attention. However, there has hardly been any specific focus on dynamic changes to corrugation angle in the models. The flexible vein joints containing resilin in the wings of dragonflies and damselflies enable the longitudinal veins to rotate and thereby change the corrugation angles throughout flapping cycles. Therefore, a two-dimensional corrugated airfoil with time-varying corrugation angles is proposed and the aerodynamic performance is evaluated in terms of aerodynamic force, power and efficiency. The r

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5

Abtahi, Arman, and J. M. Floryan. "Natural convection and thermal drift." Journal of Fluid Mechanics 826 (August 8, 2017): 553–82. http://dx.doi.org/10.1017/jfm.2017.426.

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An analysis of natural convection in a horizontal, geometrically non-uniform slot exposed to spatially non-uniform heating has been carried out. The upper plate is smooth and isothermal, and the lower plate has sinusoidal corrugations with a sinusoidal temperature distribution. The distributions of the non-uniformities are characterized in terms of the wavenumber$\unicode[STIX]{x1D6FC}$and their relative position is expressed in terms of the phase difference$\unicode[STIX]{x1D6FA}_{TL}$. The analysis is limited to heating conditions which do not give rise to secondary motions in the absence of

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6

Zhong, Yuzhou, Jingquan Zhao, Lei Zhao, Ge Gao, and Xiaowei Zhu. "Heat Transfer and Flow Resistance in Crossflow over Corrugated Tube Banks." Energies 17, no. 7 (2024): 1641. http://dx.doi.org/10.3390/en17071641.

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The engineering of tubes with surface corrugations is recognized as an effective method for enhancing heat transfer within the tube. Yet the impact of surface corrugation on the flow and heat transfer around the tube’s exterior remains inadequately explored. This study investigates the crossflow and heat transfer characteristics in banks of periodically inward-corrugated tubes using computational fluid dynamics. Numerical simulations were performed for both in-line and staggered tube arrangements, covering Reynolds numbers from 1000 to 10,000. The aim was to examine how various corrugation par

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7

YU, JIE, and LOUIS N. HOWARD. "On higher order Bragg resonance of water waves by bottom corrugations." Journal of Fluid Mechanics 659 (July 12, 2010): 484–504. http://dx.doi.org/10.1017/s0022112010002582.

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The exact theory of linearized water waves in a channel of indefinite length with bottom corrugations of finite amplitude (Howard & Yu, J. Fluid Mech., vol. 593, 2007, pp. 209–234) is extended to study the higher order Bragg resonances of water waves occurring when the corrugation wavelength is close to an integer multiple of half a water wavelength. The resonance tongues (ranges of water-wave frequencies) are given for these higher order cases. Within a resonance tongue, the wave amplitude exhibits slow exponential modulation over the corrugations, and slow sinusoidal modulation occurs ou

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8

Saha, S., J. C. Klewicki, A. Ooi, and H. M. Blackburn. "On scaling pipe flows with sinusoidal transversely corrugated walls: analysis of data from the laminar to the low-Reynolds-number turbulent regime." Journal of Fluid Mechanics 779 (August 14, 2015): 245–74. http://dx.doi.org/10.1017/jfm.2015.414.

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Direct numerical simulation was used to study laminar and turbulent flows in circular pipes with smoothly corrugated walls. The corrugation wavelength was kept constant at $0.419D$, where $D$ is the mean diameter of the wavy-wall pipe and the corrugation height was varied from zero to $0.08D$. Flow rates were varied in steps between low values that generate laminar flow and higher values where the flow is in the post-transitional turbulent regime. Simulations in the turbulent regime were also carried out at a constant Reynolds number, $\mathit{Re}_{{\it\tau}}=314$, for all corrugation heights.

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9

Nur, Monika, Naoya Yamaguchi, and Fumiyuki Ishii. "Simple Model for Corrugation in Surface Alloys Based on First-Principles Calculations." Materials 13, no. 19 (2020): 4444. http://dx.doi.org/10.3390/ma13194444.

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The structural stability of M/Ag(111)–3×3R30° surface alloys is systematically investigated by using first-principles calculations, where M is a member of group III (B, Al, Ga, In, Tl), IV (C, Si, Ge, Sn, Pb), and V (N, P, As, Sb, Bi) elements. We focus on the corrugation parameter d which is determined by the height of the M atom from the Ag atom in the plane of the top-most atom, and the relation between atomic radii and corrugations in M/Ag(111) is obtained. The tendencies of the corrugation parameter d can be understood by using a simple hard spherical atomic model. We introduce a new type

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10

Wang, J. F., S. L. Zhu, and J. Xie. "CFD-based investigation of R22 flow boiling characteristics in corrugated pipes." Journal of Physics: Conference Series 2047, no. 1 (2021): 012017. http://dx.doi.org/10.1088/1742-6596/2047/1/012017.

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Abstract Double pipes are widely used in the food industry. In order to investigate the influence of different corrugation heights on the heat transfer performance of the corrugated pipe, the corrugated tubes with different sizes have been analyzed. The influence of different corrugation heights on the heat transfer coefficient and the pressure drop has been studied. An effect of the refrigerant velocity on the heat transfer coefficient and the pressure drop has been analyzed. The results show that the highest heat transfer coefficient takes place at the corrugation height 3.3mm. With an incre

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11

Wu, Zhe, Chenyao Guo, Haoyu Yang, Hang Li, and Jingwei Wu. "Experimentally Based Numerical Simulation of the Influence of the Agricultural Subsurface Drainage Pipe Geometric Structure on Drainage Flow." Agriculture 12, no. 12 (2022): 2174. http://dx.doi.org/10.3390/agriculture12122174.

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The geometric structure of corrugated plastic pipes affects performance in agricultural subsurface drainage systems. To explore the influence of pipe geometry on flow field characteristics and the characterization of water movements, we developed a three-dimensional (3D) steady-state subsurface drainage model based on computational fluid dynamics (CFD). An analysis of the CFD and sand tank results indicated that the proposed model can accurately simulate the subsurface drainage process (R2 = 0.99). The corrugation structure parameters of the drainpipe, including the outside diameter, corrugati

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12

Koshy, Ms Bency Mariyam, and Mr Jinu Darsh M. S. "Performance Evaluation of Composite Wall with Boundary Column Having Triangular Corrugation." International Journal for Research in Applied Science and Engineering Technology 10, no. 7 (2022): 569–73. http://dx.doi.org/10.22214/ijraset.2022.45371.

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Abstract: Composite wall is an innovation in the field of Civil Engineering that enhances the constructability by eliminating reinforcing bars and formwork. Double skin composite wall consist of a concrete core is placed between outer steel plates. By providing corrugation in the steel plate improves the seismic behavior and also stability against buckling. This paper aims to the performance evaluation of corrugation on composite wall with boundary column. For this study, four FE models of composite wall with boundary column having triangular corrugation were analyzed using Ansys 2022 R1. Comp

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13

Kadhim Hasan, Zinah, Sadjad Hemzah, and Muslim Al-Kannoon. "Numerical Investigation for the Behaviour of Corrugated Steel Compact I-Section." Kerbala Journal for Engineering Sciences 1, no. 1 (2021): 16–31. https://doi.org/10.63463/kjes1007.

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The aim of the present work is to examine numerically the structural behavior of steel compact I-section with different corrugation technique. The experimental results of the ultimate strengths and deflection of one flat plate and eleven corrugated steel I-section investigated experimentally by the authors were used to validate the accuracy of the finite element results obtained from Abaqus F.E. program. Some parameters, like web corrugation width and core corrugation technique, were also examined. Results of finite element analysis showed a very good agreement with the those of experimental o

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14

Wang, Yu, Chunguang Zhang, Shangqing Li, Lei An, and Ye Wu. "Analysis of Stamping Forming and Springback of Arc-shaped Corrugated Diaphragm." Journal of Physics: Conference Series 2892, no. 1 (2024): 012004. http://dx.doi.org/10.1088/1742-6596/2892/1/012004.

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Abstract The arc-shaped corrugated diaphragm is the packaging component of pressure sensors, and the quality of diaphragms directly affects the performance of pressure sensors. Diaphragms are usually produced by blanking process. Common production defects include the severe warping and the insufficient forming height. In order to reduce production defects, this paper uses the flat punch and the corrugated punch as research objects to clarify the effect of production process and punch structure on diaphragm production quality. The results show that the production process causes the diaphragm to

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15

Lukin, Aleksey O., and Vadim Y. Alpatov. "Influence of a Metal Beam of a Corrugated Wall Geometrical Parameters on Size and Nature of Internal Tension Distribution." Materials Science Forum 931 (September 2018): 247–51. http://dx.doi.org/10.4028/www.scientific.net/msf.931.247.

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Nowadays a concept of a beam with a corrugated wall in construction mechanics does not exist. Such designs do and they are used in construction. Definition of the intense deformed condition of a beam with a corrugated wall is a relevant task. In this article the task of tension distribution nature assessment in the cross section of a beam in a corrugation height variation was discussed. The task was solved in the course of the numerical experiments with application of the finite element method (FEM). The problem was solved for beams with different shapes of the lines forming a corrugation. It

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16

Han, Huaizhi, and Ruitian Yu. "EFFECT OF CORRUGATION HEIGHT ON FLOW AND HEAT TRANSFER MECHANISM IN A CORRUGATION CHANNEL." Heat Transfer Research 50, no. 13 (2019): 1231–49. http://dx.doi.org/10.1615/heattransres.2018027243.

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Khalaf, Wekar M., Riyah N. Kiter, and Mazin Y. Abood. "Influence of Corrugation Pattern on the Stiffness of Thin Plates." Materials Science Forum 1002 (July 2020): 578–93. http://dx.doi.org/10.4028/www.scientific.net/msf.1002.578.

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This paper presents a numerical and experimental study of the effect of corrugation pattern on the stiffness of thin plates. A two-dimensionally symmetric pattern of corrugation has been proposed and various parameters affecting the stiffness of corrugated plate were optimized. The numerical analysis was performed using a three-dimensional mechanical software design program SOLID WORKS and the finite element program ABAQUS /standard 6.14 software. The trapezoidal pattern of corrugation was selected for this purpose. Having numerically optimized, the proposed pattern was fabricated and tested f

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18

Kirilenko, D. A., and P. N. Brunkov. "Measuring the height-to-height correlation function of corrugation in suspended graphene." Ultramicroscopy 165 (June 2016): 1–7. http://dx.doi.org/10.1016/j.ultramic.2016.03.010.

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19

Zhang, Yize. "Review of Corrugated Plate Design for Plate Heat Exchangers." Applied and Computational Engineering 162, no. 1 (2025): None. https://doi.org/10.54254/2755-2721/2025.gl24420.

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Heat exchange systems are key technologies that are widely adopted in industrial production and play an important role in many fields such as petrochemicals, aerospace, and integrated circuits. The plate heat exchanger, a crucial component in the heat transfer process, holds significant importance for design optimization to attain optimal heat transfer efficiency, given its popularity in the industrial sector. The heat exchanger plate is the most important part of the plate heat exchanger; different corrugated shapes of the heat exchanger plate have different effects on the heat transfer effec

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20

Anto, Megha, Raghavan Ramalingam, and Jayabalan Perumalsamy. "Strength of Cold-Formed Stainless-Steel Corrugated Rectangular Sections under Compression." Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, no. 1 (2022): 1441–47. http://dx.doi.org/10.38208/acp.v1.674.

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Provision of intermediate stiffening is an effective method to improve the strength of cold-formed steel compression members without having to increase the outer dimensions of the section. As cold-formed sections can be easily produced in various cross-section profiles, the effect of intermediate stiffening on ultimate load carrying capacity and behavior of structural elements need to be determined. In this study columns with Cold-Formed Stainless-Steel and Corrugated Rectangular Hollow Sections are studied numerically using Finite Element analysis. The column simulation is conducted using ABA

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21

Massoudi, Mohamed Dhia, Mohamed Bechir Ben Hamida, Mohammed A. Almeshaal, Yahya Ali Rothan, and Khalil Hajlaoui. "Numerical analysis of magneto-natural convection and thermal radiation of SWCNT nanofluid inside T-inverted shaped corrugated cavity containing porous medium." International Journal of Numerical Methods for Heat & Fluid Flow 32, no. 3 (2021): 1092–114. http://dx.doi.org/10.1108/hff-02-2021-0095.

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Purpose The purpose of this paper is to examine numerically the magnetohydrodynamic (MHD) free convection and thermal radiation heat transfer of single walled carbon nanotubes-water nanofluid within T-inverted shaped corrugated cavity comprising porous media including uniform heat source/sink for solar energy power plants applications. Design/methodology/approach The two-dimensional numerical simulation is performed by drawing on Comsol Multiphysics program, based on the finite element process. Findings The important results obtained show that increasing numbers of Rayleigh and Darcy and the p

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22

Sugawara, Yasuhiro, Tatsuya Ishizaka, and Seizo Morita. "Origin of Anomalous Corrugation Height of STM Images of Graphite." Japanese Journal of Applied Physics 29, Part 1, No. 8 (1990): 1533–38. http://dx.doi.org/10.1143/jjap.29.1533.

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Selimefendigil, Fatih, and Ali J. Chamkha. "MHD mixed convection of nanofluid in a three-dimensional vented cavity with surface corrugation and inner rotating cylinder." International Journal of Numerical Methods for Heat & Fluid Flow 30, no. 4 (2019): 1637–60. http://dx.doi.org/10.1108/hff-10-2018-0566.

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Purpose This study aims to numerically examine mixed convection of CuO-water nanofluid in a three-dimensional (3D) vented cavity with inlet and outlet ports under the influence of an inner rotating circular cylinder, homogeneous magnetic field and surface corrugation effects. In practical applications, it is possible to encounter some of the considered configurations in a vented cavity such as magnetic field, rotating cylinder and it is also possible to specially add some of the active and passive control means to control the convection inside the cavity such as adding nanoparticles, corrugati

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Lu, Hao, Yu Wang, Hongchang Li, and Wenjun Zhao. "Numerical Simulation of Turbulent Structure and Particle Deposition in a Three-Dimensional Heat Transfer Pipe with Corrugation." Energies 17, no. 2 (2024): 321. http://dx.doi.org/10.3390/en17020321.

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When colloidal particles are deposited in a heat transfer channel, they increase the flow resistance in the channel, resulting in a substantial decrease in heat transfer efficiency. It is critical to have a comprehensive understanding of particle properties in heat transfer channels for practical engineering applications. This study employed the Reynolds stress model (RSM) and the discrete particle model (DPM) to simulate particle deposition in a 3D corrugated rough-walled channel. The turbulent diffusion of particles was modeled with the discrete random walk model (DRW). A user-defined functi

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25

Tănase, Maria, Alexandra Ileana Portoacă, Manuela Rozalia Gabor, and Cristina Veres. "Integrated Analytical, Numerical, and Statistical Analysis of Buckling Behavior in Steel Cylindrical Silos with Corrugated Walls." Processes 12, no. 11 (2024): 2443. http://dx.doi.org/10.3390/pr12112443.

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This paper investigates the buckling behavior of steel cylindrical silos with corrugated walls and vertical stringers under axial compression. The study integrates analytical, numerical, and statistical analyses to understand the influence of geometrical parameters such as radius, wall thickness, and corrugation profile on the buckling phenomenon. The analytical calculations elucidate the critical buckling load for various scenarios, considering both unstiffened and stiffened wall configurations. The finite element analysis provides numerical validation, while the statistical analysis offers i

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Schuster, R., J. V. Barth, J. Wintterlin, R. J. Behm, and G. Ertl. "Distance dependence and corrugation in barrier-height measurements on metal surfaces." Ultramicroscopy 42-44 (July 1992): 533–40. http://dx.doi.org/10.1016/0304-3991(92)90319-f.

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Sangsawang, Rilrada, Thanate Matum, and Udomkiat Nontakaew. "The Effect of the Corrugation Height on Temperature Distribution in Primary Surface Recuperator for 30 kW Microturbine." International Journal of Materials, Mechanics and Manufacturing 4, no. 2 (2015): 131–34. http://dx.doi.org/10.7763/ijmmm.2016.v4.240.

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Zhang, Wang Li, Yu Shun Li, Huang Ying Shen, Tian Yuan Jiang, and Zhen Wen Zhang. "Experimental and Theoretical Study on Seismic Behavior of Profiled Steel Sheet-Bamboo Plywood Composite Walls." Advanced Materials Research 113-116 (June 2010): 2246–50. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.2246.

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In order to promote building structure to be environmental friendly, light-weight and high-strength, a novel bamboo-steel composite wall is proposed. The composite wall is made up by sticking two pieces of bamboo plywood on the faces of a piece of profiled steel sheet utilizing structural glue. Taking thickness of the bamboo plywood and thickness and corrugation-height of the profiled steel sheet as variables, quasi-static tests were carried out on 5 specimens. Based on experimental phenomena and data, their earthquake resistant properties such as horizontal bearing capacity, ductility and ene

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Съянов, Сергей, and Sergey Syanov. "THEORETICAL DEFINITION FOR QUALITY PARAMETERS OF SURFACE LAYER IN PARTS, TOOL-ELECTRODE WEAR AND PROCESS PRODUCTIVITY AT ELECTROEROSION MACHINING." Bulletin of Bryansk state technical university 2016, no. 1 (2016): 67–73. http://dx.doi.org/10.12737/18261.

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An electric erosion process serves as a basis for electroerosion machining (EEM) as a result of which occurs a material removal from the surface of a product. The destruction of electrode surface takes place at the expense of melting and partial evaporation of material. As a result of this the cavities called holes remain on a surface and also changes arise on the surface layer of a billet. A microrelief of a surface is formed with considerable quantity of mutually covered holes having different geometrics the knowledge of which allowed determining height and pitch parameters of roughness. Upo

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Sugawara, Yasuhiro, Tatsuya Ishizaka, Seizo Morita, Syozo Imai, and Nobuo Mikoshiba. "Anomalous Corrugation Height of Atomically Resolved AFM Images of a Graphite Surface." Japanese Journal of Applied Physics 29, Part 2, No. 3 (1990): L502—L504. http://dx.doi.org/10.1143/jjap.29.l502.

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Elsheikh, Mogeeb Elrahman. "Highly Flexible Wind Turbine Blades Utilizing Corrugated Surface Hinges." Coatings 11, no. 6 (2021): 635. http://dx.doi.org/10.3390/coatings11060635.

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An anthropomorphic wind turbine blade was the suggested design that had a flexure hinge at root, middle, and tip regions. The inter-distances of the flexure hinges follow the Fibonacci sequence and resembled the natural finger through binding. Therefore, the present study designs various corrugated flexure hinges. NACA0012 is chosen as the basic airfoil for designing the corrugated flexure hinges with different geometrical profiles and leading edges. The designs are based on morphing technology and the main geometrical parameters of the corrugation, the pitch distance along the span and the he

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Lou, Zhihao, Chenfei Song, Yulong Ren, et al. "Formation of Corrugated Damage on Bearing Race under Different AC Shaft Voltages." Materials 17, no. 4 (2024): 859. http://dx.doi.org/10.3390/ma17040859.

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Corrugated damage to bearings is a common fault in electrical facilities such as new energy vehicles, wind power, and high-speed railways. The aim of this article is to reveal the microscopic characteristics and formation mechanism of such damages. The corrugation with alternating “light” and “dark” shape was produced on GCr15 bearing races in the experimental conditions. Compared to the light area, the dark area (in the images generated by optical microscope) has more severe electrical erosion, lower hardness, more concave morphology, and lower oxidation. As the voltage increases, the width o

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Khavin, Gennadii, and Tatiana Babak. "Advantages of using channels with different corrugation height in the plate heat exchangers." Eastern-European Journal of Enterprise Technologies 1, no. 8 (91) (2018): 33–38. http://dx.doi.org/10.15587/1729-4061.2018.120546.

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Ishizaka, Tatsuya, Yasuhiro Sugawara, Kozo Kumagai, and Seizo Morita. "Anomalous Force Dependence of AFM Corrugation Height of a Graphite Surface in Air." Japanese Journal of Applied Physics 29, Part 2, No. 7 (1990): L1196—L1198. http://dx.doi.org/10.1143/jjap.29.l1196.

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Zhu, Lingxue, Yang Liu, Mingxuan Li, Xiaofeng Lu, and Xiaolei Zhu. "Calculation Model of Mechanical and Sealing Properties of NiTi Alloy Corrugated Gaskets under Shape Memory Effect and Hyperelastic Coupling: I Mechanical Properties." Materials 15, no. 14 (2022): 4836. http://dx.doi.org/10.3390/ma15144836.

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NiTi alloy’s shape memory effect provides additional restoring force under temperature loads, making it an ideal material for gaskets. However, its yield stress is too large to form the initial seal. In this paper, by combining the advantages of corrugated structure and NiTi alloy’s shape memory effect, a NiTi alloy corrugated gasket is proposed. Its mechanical properties were studied using experiments and the finite element method. The influences of geometric parameters on gasket performance were discussed. The results show that the shape memory effect can greatly improve the contact stress o

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Fu, Pengcheng, Gaochao Yu, Shida Yang, et al. "Influence of Structural Parameters on the Mechanical Performance of Multi-Layer U-Shaped Metal Bellows." Metals 14, no. 12 (2024): 1431. https://doi.org/10.3390/met14121431.

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Metal bellows feature a simple structure, high-temperature resistance, corrosion resistance, and strong flexibility for compensation, making them widely used in the aerospace, machinery, and petrochemical industries. Compared to multilayer bellows, single-layer bellows are simpler in structure and forming process, making the performance easier to achieve. The structural parameters of multilayer metal bellows, particularly the number of layers, significantly impact the performance. This study focuses on multilayer U-shaped metal bellows made of 304 stainless steel. Using ABAQUS finite element s

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Zhai, Hongzhe, Sasa Gao, Wenjie Zhang, et al. "The influence of corrugated pipes parameters on heat transfer characteristics." Thermal Science, no. 00 (2023): 231. http://dx.doi.org/10.2298/tsci230709231z.

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In order to investigate the influence mechanism of various corrugated structures on the heat transfer of continuous annular concave-convex corrugated pipes, this paper examines the influence of corrugation height (Ch=1, 1.5 and 2 mm) and corrugation width (Cw=1, 1.5 and 2 mm) on the flow pattern, turbulent kinetic energy(TKE), Nusselt number (Nu), friction coefficient (f), and performance evaluation factor (PEF). Then, the correlation equations for Nu and f are established with different corrugated structural parameters. The results show that with the increase of Ch, the vortex number, TKE, an

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Mustafin, Medet. "Advanced characterization of atomic terraces and electronic topography of graphite using STM in constant current and constant height modes." Technobius Physics 3, no. 2 (2025): 0033. https://doi.org/10.54355/tbusphys/3.2.2025.0033.

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This study presents a high-resolution scanning tunneling microscopy analysis of highly ordered pyrolytic graphite, aimed at quantitatively characterizing atomic-scale surface features using both constant-current and constant-height imaging modes. Building upon previous work, the investigation focuses on step height measurements and lattice parameter evaluation across multiple scan areas. STM images captured in constant-current mode revealed clear atomic terraces and hexagonal lattice patterns, with step heights measured at approximately 332.2–333.9 pm, closely matching the theoretical monolaye

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Kovačević, Aleksander G., Suzana Petrović, Alexandros Mimidis, Emmanuel Stratakis, Dejan Pantelić, and Branko Kolaric. "Molding Wetting by Laser-Induced Nanostructures." Applied Sciences 10, no. 17 (2020): 6008. http://dx.doi.org/10.3390/app10176008.

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The influence of material characteristics—i.e., type or surface texture—to wetting properties is nowadays increased by the implementation of ultrafast lasers for nanostructuring. In this account, we exposed multilayer thin metal film samples of different materials to a femtosecond laser beam at a 1030 nm wavelength. The interaction generated high-quality laser-induced periodic surface structures (LIPSS) of spatial periods between 740 and 790 nm and with maximal average corrugation height below 100 nm. The contact angle (CA) values of the water droplets on the surface were estimated and the val

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Liu, Baodong, Zhen Wang, Weibo Xu, Haibo Sun, and Xiaoxi Wang. "Comparative Experimental Study and FE Analysis of Corrugated Steel Pipe Culverts with Different Stiffness." Open Civil Engineering Journal 10, no. 1 (2016): 549–63. http://dx.doi.org/10.2174/1874149501610010549.

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This paper describes comparative experiment on corrugated steel pipe culverts with different stiffness. The two culverts both with 1.2m span and 4m backfill height but with different corrugation pattern and plate thickness were constructed side by side. Displacement, strain and soil pressure at critical points were tested during construction. Two-dimensional (2D) finite element (FE) models were established and the computed values were compared with measured values to verify the effectiveness of FE models and the reasonability of the test. The study shows that the deformation trend is the same

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Xu, Fen, Yikai Cheng, Kangjian Wang, and Man Zhou. "Transverse Analysis of Box Girders with Corrugated Steel Webs." Buildings 14, no. 3 (2024): 574. http://dx.doi.org/10.3390/buildings14030574.

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The utilisation of box girders with corrugated steel webs (CSWs) represents an innovative approach to bridge superstructure design that has garnered substantial popularity worldwide, with a notable prevalence in both Asia and Europe. Compared with traditional box girders, they avoid web cracking, improving the prestressing efficiency and bridge spanning ability. As an innovative box girder, a corrugated web can increase the cantilever length and transverse stiffness, and at the same time, it reduces the dead weight of the bridge deck. However, little research has been conducted on the mechanic

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Dyshlyuk, Anton V., Alexey Proskurin, Andrey A. Bogdanov, and Oleg B. Vitrik. "Scattering Amplitude of Surface Plasmon Polariton Excited by a Finite Grating." Nanomaterials 13, no. 14 (2023): 2091. http://dx.doi.org/10.3390/nano13142091.

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Unusual optical properties of laser-ablated metal surfaces arise from the excitation of local plasmon resonances in nano- and microstructures produced by laser-processing and from the mutual interaction of those structures through surface plasmon polariton (SPP) waves. This interaction provides a synergistic effect, which can make the optical properties of the composite nanostructure drastically different from the properties of its elements. At the same time, the prediction and analysis of these properties are hampered by the complexity of the analytical solution to the problem of SPP excitati

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Xue, Fei, Beibei Sun, Renqiang Jiao, and Jiandong Chen. "Numerical studies on the acoustic characteristics of the U-shaped corrugated pipes and application investigations." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 5 (2018): 1136–49. http://dx.doi.org/10.1177/0954407018762488.

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This paper presents a numerical study on the effect of structural parameters on acoustical transmission loss of U-shaped corrugated pipe using the control variable method. Then, the interactions between the cutoff frequencies and structural parameters are modeled based on the dimension analysis method using the numerical results. An investigation into the application of the U-shaped corrugated pipe into a simple expansion chamber muffler is carried out using both numerical and experimental methods. The results show that the U-shaped corrugated pipes have unique acoustic characteristics in nois

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Gu, Shenglong, Fuping Bo, Min Luo, Ehsan Kazemi, Yunyun Zhang, and Jiahua Wei. "SPH Simulation of Hydraulic Jump on Corrugated Riverbeds." Applied Sciences 9, no. 3 (2019): 436. http://dx.doi.org/10.3390/app9030436.

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This paper presents a numerical study of the hydraulic jump on corrugated riverbed using the Smoothed Particle Hydrodynamics (SPH) method. By simulating an experimental benchmark example, the SPH model is demonstrated to predict the wave profile, velocity field, and energy dissipation rate of hydraulic jump with good accuracy. Using the validated SPH model, the dynamic evolvement of the hydraulic jump on corrugated riverbed is studied focusing on the vortex pattern, jump length, water depth after hydraulic jump, and energy dissipation rate. In addition, the influences of corrugation height and

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Wang, Cailin, Li Yu, Wuhua Yang, and Lei Guan. "Study on the Characteristics of FSRD with a Corrugated Anode and p⁺ Adjustment Region at Cathode." Journal of Physics: Conference Series 2370, no. 1 (2022): 012005. http://dx.doi.org/10.1088/1742-6596/2370/1/012005.

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The reverse recovery characteristic of the power diode will directly affect the reliability of the inverter application. In order to improve the reverse recovery characteristics of the fast and soft recovery diode (FSRD), a new FSRD structure with Corrugated Anode and P+ adjusting Cathode (CA-PC-FSRD) is studied by the Sentaurus-TCAD simulator and compared with the characteristics of conventional FSRD. The influence of key parameters, such as the height and width of anode corrugation and the width of the p+ adjusting region at the cathode, on the characteristics are discussed. Simulation resul

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Botova, Anastasiya Vladimirovna, and Svetlana Valer'evna Mukhametova. "Dynamics of gladiolus leaves growth." Сельское хозяйство, no. 1 (January 2022): 17–26. http://dx.doi.org/10.7256/2453-8809.2022.1.38291.

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Gladiolus L. are beautifully flowering perennials that do not overwinter in the open ground in the conditions of central Russia. Its varieties are characterized by a huge variety in the height of the peduncle, the color scheme and the corrugation degree of the flowers. The disadvantage of this crop is the complexity of the annual digging and planting of corms. The purpose of the article is to study the growth dynamics of real gladiolus leaves in the open ground. Leaf height measurements were carried out after 15 days in the process of growing plants on ridges. The objects of the study were 9 v

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Tepin, N. V., V. А. Khrabrov, and S. N. Kniazev. "Experience in Manufacturing and Mastering Roll Forming Mills for the Production of Profiled Flooring." Vestnik IzhGTU imeni M.T. Kalashnikova 24, no. 4 (2021): 35–44. http://dx.doi.org/10.22213/2413-1172-2021-4-35-44.

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The purpose of the study is to develop and master the designs of rolling mills for the production of profile flooring. In recent years, the volume of the profile flooring production has been increasing. This leads to an increase in the number and expansion of types of structures of rolling mills. An urgent problem in the production of rolling mills is not only ensuring the high quality of the products, but also choosing the optimal design of the rolling mill from the point of view of reliability, rigidity and manufacturability. The designs of rolling mills are considered: with stands without a

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Tikhomirov, Victor, and Mikhail Izmerov. "IMPACT OF CORRUGATION AND ROUGHNESS OF SURFACE UPON NORMAL CONTACT STIFFNESS OF FLAT JOINT." Bulletin of Bryansk state technical university 2019, no. 12 (2019): 4–12. http://dx.doi.org/10.30987/1999-8775-2019-2019-12-4-12.

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A contact stiffness of a flat join in engineering surfaces depends upon the presence of corrugation and roughness which are actually on any surface. An efficient method for the analysis of a contact interaction between wavy surfaces is a simulation: statistical methods for the estimate are unacceptable because of a small number of waves and the absence of a proper statistical distribution of their height, and a fractal model manifesting the peculiarities of rough layer structure and the presence of self-affinity is most suitable for the estimate of contact stiffness.  In this paper there

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Hairullin, Rustam, Anna Kozelskaya, and Marina Kazachenok. "Ultrasonic Impact Treatment of Fine- and Coarse Grained Commercial Purity Titanium." Advanced Materials Research 1139 (July 2016): 12–15. http://dx.doi.org/10.4028/www.scientific.net/amr.1139.12.

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The grain size effect on surface morphology, microstructure and mechanical properties of commercial purity titanium specimens subjected to ultrasonic impact treatment was studied. It was found by atomic force microscope that ultrasonic impact treatment of titanium specimens resulted in surface corrugation happens due to their severe plastic deformation. The profile height of the corrugated surface depends on the grain size of specimens and varies in a wide range. The thicknesses of a modified surface layer of fine-and coarse grained titanium specimens were studied. Electron backscatter diffrac

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Hussain, Salam Hadi, Ahmed Kadhim Hussein, and Mahmoud Moustafa Mahdi. "Natural convection in a square inclined enclosure with vee-corrugated sidewalls subjected to constant flux heating from below." Nonlinear Analysis: Modelling and Control 16, no. 2 (2011): 152–69. http://dx.doi.org/10.15388/na.16.2.14102.

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Two-dimensional steady natural convective flow in a square inclined enclosure with vertical vee-corrugated sidewalls and horizontal top and bottom surfaces has been numerically studied. A discrete heat flux strip of 24% of the total length is flush-mounted on the bottom wall, while the other non-heated parts of the bottom wall and the top wall are considered adiabatic. The two vee-corrugated sidewalls are maintained at constant cold temperature. Grashof number is varied from 103 to 106, corrugation frequency is varied from 0.5 to 2.0, corrugation amplitude has been fixed at 10% of the enclosur

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