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Journal articles on the topic 'Density wave'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Ning, Li, Mu Jie, and Kong Fancun. "Numerical Studies on Bow Waves in Intense Laser-Plasma Interaction." Laser and Particle Beams 2023 (February 15, 2023): 1–11. http://dx.doi.org/10.1155/2023/9414451.

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Laser-driven wakefield acceleration (LWFA) has attracted lots of attention in recent years. However, few writers have been able to make systematic research into the bow waves generated along with the wake waves. Research about the bow waves will help to improve the understanding about the motion of the electrons near the wake waves. In addition, the relativistic energetic electron density peaks have great potential in electron acceleration and reflecting flying mirrors. In this paper, the bow waves generated in laser-plasma interactions as well as the effects of different laser and plasma para

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2

Dóra, B., K. Maki, and A. Virosztek. "Magnetotransport in d -wave density waves." Europhysics Letters (EPL) 72, no. 4 (2005): 624–30. http://dx.doi.org/10.1209/epl/i2005-10272-2.

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3

Dai, Fucai, Feng Zhang, and Xiangyang Li. "SH-SH wave inversion for S-wave velocity and density." GEOPHYSICS 87, no. 3 (2022): A25—A32. http://dx.doi.org/10.1190/geo2021-0314.1.

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SS-waves (SV-SV waves and SH-SH waves) are capable of inverting S-wave velocity ([Formula: see text]) and density ([Formula: see text]) because they are sensitive to both parameters. SH-SH waves can be separated from multicomponent data sets more effectively than the SV-SV wave because the former is decoupled from the PP-wave in isotropic media. In addition, the SH-SH wave can be better modeled than the SV-SV wave in the case of strong velocity/impedance contrast because the SV-SV wave has multicritical angles, some of which can be quite small when velocity/impedance contrast is strong. We der

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4

Tomiyoshi, Shoichi, Hiroyuki Ohsumi, Hisao Kobayashi, and Akiji Yamamoto. "Charge Density Wave Accompanied by Spin Density Wave in Mn3Si." Journal of the Physical Society of Japan 83, no. 4 (2014): 044715. http://dx.doi.org/10.7566/jpsj.83.044715.

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5

Tang, Huai-Gu, Bing-Shou He, and Hai-Bo Mou. "P- and S-wave energy flux density vectors." GEOPHYSICS 81, no. 6 (2016): T357—T368. http://dx.doi.org/10.1190/geo2016-0245.1.

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The conventional energy flux density vector indicates the propagation direction of mixed P- and S-wave wavefields, which means when a wavefront of P-wave encounters a wavefront of S-wave with different propagation directions, the vectors cannot indicate both directions accurately. To avoid inaccuracies caused by superposition of P- and S-waves in a conventional energy flux density vector, P- and S-wave energy flux density vectors should be calculated separately. Because the conventional energy flux density vector is obtained by multiplying the stress tensor by the particle-velocity vector, the

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6

Voitenko, A. I., and A. M. Gabovich. "Charge density waves in d-wave superconductors." Low Temperature Physics 36, no. 12 (2010): 1049–57. http://dx.doi.org/10.1063/1.3533237.

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7

Dóra, B., K. Maki, and A. Virosztek. "D-wave density waves in CeCoIn5and highTccuprates." Journal de Physique IV (Proceedings) 131 (December 2005): 319–22. http://dx.doi.org/10.1051/jp4:2005131081.

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8

Pretre, A., and T. M. Rice. "Spin-density-wave state in a charge-density-wave domain wall." Journal of Physics C: Solid State Physics 19, no. 9 (1986): 1363–76. http://dx.doi.org/10.1088/0022-3719/19/9/009.

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9

Maki, Kazumi. "Spin-density-wave and charge-density-wave fluctuation and electric conductivity." Physical Review B 41, no. 13 (1990): 9308–14. http://dx.doi.org/10.1103/physrevb.41.9308.

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10

Spangler, S. R. "Interstellar Magnetohydrodynamic Waves as Revealed by Radio Astronomy." Symposium - International Astronomical Union 140 (1990): 176. http://dx.doi.org/10.1017/s0074180900189880.

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The plasma density fluctuations responsible for interstellar scintillations occur on the same scales as interstellar magnetohydrodynamic waves (Alfvén waves), which are responsible for many important processes such as the acceleration of the cosmic rays. This suggests that these density fluctuations represent a compressive component of MHD waves, and raises the exciting possibility that radioastronomical observations can provide more or less direct measurements of interstellar microphysical processes. Extraction of MHD wave properties from the radio scattering measurements requires a sound the

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11

Ratkiewicz, R., D. E. Innes, and J. F. McKenzie. "Characteristics and Riemann invariants for multi-ion plasmas in the presence of Alfvén waves." Journal of Plasma Physics 52, no. 2 (1994): 297–307. http://dx.doi.org/10.1017/s0022377800017918.

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In this paper the characteristics for a single- and a bi-ion plasma in the presence of Alfvén waves are given. In the single-ion case, the analysis is extended to the situation where Alfvén waves saturate and dissipatively heat the plasma. When there is no dissipation, there are three sound waves and one entropy wave in the single-ion plasma. Each sound wave is associated with two Riemann invariants relating the changes in density and wave pressure to changes in the flow. In the case when the Alfvén waves saturate and heat the plasma, there are two sound waves and one modified entropy sound wa

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12

de Hoog, Edwin, Tjalie van der Voort, Arno Talmon, and Cees van Rhee. "A 1-dimensional-two-layer transient drift-flux model for hydraulic transport pipelines: modelling and experiments of bed layer erosion and density wave amplification." Journal of Hydrology and Hydromechanics 72, no. 1 (2024): 64–79. http://dx.doi.org/10.2478/johh-2023-0039.

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Abstract Hydraulic transport pipelines in the dredging, mining and deep sea mining are designed using steady-state methods. However, these methods cannot predict density wave formation. Density waves form a risk for pipeline blockages, therefore there is a need to understand and preferably be able to model the process. The density waves studied in this research are caused by a stationary sediment deposit in the pipeline. This article explores the development of a new transient design model, based on 1-dimensional-two-layer Driftflux CFD. The two layers model the exchange of sediment between th

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13

Mozer, F. S., O. Agapitov, S. D. Bale, et al. "Origin of the type III radiation observed near the Sun." Astronomy & Astrophysics 690 (October 2024): L6. http://dx.doi.org/10.1051/0004-6361/202451134.

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Aims. We investigate processes associated with the generation of type III radiation using Parker Solar Probe measurements. Methods. We measured the amplitudes and phase velocities of electric and magnetic fields and their associated plasma density fluctuations. Results. 1. There are slow electrostatic waves near the Langmuir frequency and at as many as six harmonics, the number of which increases with the amplitude of the Langmuir wave. Their electrostatic nature is shown by measurements of the plasma density fluctuations. From these density fluctuations and the electric field magnitude, the k

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14

Wang, Chui-lin, Wen-zheng Wang, Guo-liang Gu, Zhao-bin Su, and Lu Yu. "Localized excitations in competing bond-order-wave, charge-density-wave, and spin-density-wave systems." Physical Review B 48, no. 15 (1993): 10788–803. http://dx.doi.org/10.1103/physrevb.48.10788.

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15

Wang, Chui-Lin, Wen-Zheng Wang, Guo-Liang Gu, Zhao-Bin Su, and Lu Yu. "Localized Excitations in Competing Bond-Order-Wave, Charge-Density-Wave and Spin-Density Wave Systems." Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 256, no. 1 (1994): 903–8. http://dx.doi.org/10.1080/10587259408039345.

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16

Karashima, Akihiro, Norihiro Katayama, and Mitsuyuki Nakao. "Enhancement of Synchronization Between Hippocampal and Amygdala Theta Waves Associated With Pontine Wave Density." Journal of Neurophysiology 103, no. 5 (2010): 2318–25. http://dx.doi.org/10.1152/jn.00551.2009.

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Theta waves in the amygdala are known to be synchronized with theta waves in the hippocampus. Synchronization between amygdala and hippocampal theta waves is considered important for neuronal communication between these regions during the memory-retrieval process. These theta waves are also observed during rapid eye movement (REM) sleep. However, few studies have examined the mechanisms and functions of theta waves during REM sleep. This study examined correlations between the dynamics of hippocampal and amygdala theta waves and pontine (P) waves in the subcoeruleus region, which activates man

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17

Nikonov, S. A., S. G. Zybtsev, and V. Ya Pokrovskii. "RF wave mixing with sliding charge-density waves." Applied Physics Letters 118, no. 25 (2021): 253108. http://dx.doi.org/10.1063/5.0051636.

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18

Marinov, Kiril B., and Stephan I. Tzenov. "Nonlinear density waves in the single-wave model." Physics of Plasmas 18, no. 3 (2011): 032305. http://dx.doi.org/10.1063/1.3562878.

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19

Long, M. W., and W. Yeung. "Spin waves in multiple-spin-density-wave systems." Journal of Physics C: Solid State Physics 19, no. 9 (1986): 1409–29. http://dx.doi.org/10.1088/0022-3719/19/9/012.

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20

Inoue, Kazuko, and Tomio Ariyasu. "Sound waves and shock waves in high-density deuterium." Laser and Particle Beams 9, no. 4 (1991): 795–816. http://dx.doi.org/10.1017/s026303460000656x.

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The possibility of compressing the cryogenic hollow pellet of inertial confinement nuclear fusion with multiple adiabatic shock waves is discussed, on the basis of the estimation of the properties of a high-density deuterium plasma (1024−1027 cm−3, 10−1−104 eV), such as the velocity and the attenuation constant of the adiabatic sound wave, the width of the shock wave, and the surface tension.It is found that in the course of compression the wavelength of the adiabatic sound wave and the width of the weak shock wave sometimes become comparable to or exceed the fuel shell width of the pellet, an

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21

Moudden, A. H., J. D. Axe, P. Monceau, and F. Levy. "q1charge-density wave inNbSe3." Physical Review Letters 65, no. 2 (1990): 223–26. http://dx.doi.org/10.1103/physrevlett.65.223.

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22

Visscher, Mark I., and Gerrit E. W. Bauer. "Charge density wave ratchet." Applied Physics Letters 75, no. 7 (1999): 1007–9. http://dx.doi.org/10.1063/1.124580.

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23

Latyshev, Yu I., P. Monceau, O. Laborde, and B. Pannetier. "Charge density wave mesoscopy." Synthetic Metals 103, no. 1-3 (1999): 2582–85. http://dx.doi.org/10.1016/s0379-6779(98)00246-x.

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24

Gill, J. C., and H. H. Wills. "Charge-density wave transport." Contemporary Physics 27, no. 1 (1986): 37–59. http://dx.doi.org/10.1080/00107518608210997.

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25

Thorne, Robert E. "Charge‐Density‐Wave Conductors." Physics Today 49, no. 5 (1996): 42–47. http://dx.doi.org/10.1063/1.881498.

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26

Dressel, M., A. Schwartz, A. Blank, et al. "Charge-density-wave paraconductivity." Synthetic Metals 71, no. 1-3 (1995): 1893–94. http://dx.doi.org/10.1016/0379-6779(94)03095-n.

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27

Tabata, Y., T. Taniguchi, S. Kawarazaki, et al. "Spin density wave and charge density wave in the Kondo-lattice compound." Physica B: Condensed Matter 359-361 (April 2005): 260–62. http://dx.doi.org/10.1016/j.physb.2005.01.061.

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28

Wang, Wen-Zheng, Chui-Lin Wang, Zhao-Bin Su, and Lu Yu. "Localized excitations in competing charge-density-wave and spin-density-wave systems." Synthetic Metals 56, no. 2-3 (1993): 3370–76. http://dx.doi.org/10.1016/0379-6779(93)90130-o.

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29

Shakespeare, Callum J., and John R. Taylor. "Spontaneous Wave Generation at Strongly Strained Density Fronts." Journal of Physical Oceanography 46, no. 7 (2016): 2063–81. http://dx.doi.org/10.1175/jpo-d-15-0043.1.

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AbstractA simple analytical model is presented describing the spontaneous generation of inertia–gravity waves at density fronts subjected to strong horizontal strain rates. The model considers fronts of arbitrary horizontal and vertical structure in a semi-infinite domain, with a single boundary at the ocean surface. Waves are generated because of the acceleration of the steady uniform strain flow around the density front, analogous to the generation of lee waves via flow over a topographic ridge. Significant wave generation only occurs for sufficiently strong strain rates α > 0.2f and shar

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30

Lehmann, M., J. Schmidt, and H. Salo. "Density waves and the viscous overstability in Saturn’s rings." Astronomy & Astrophysics 623 (March 2019): A121. http://dx.doi.org/10.1051/0004-6361/201833613.

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This paper considers resonantly forced spiral density waves in a dense planetary ring that is close to the threshold for viscous overstability. We solved numerically the hydrodynamical equations for a dense thin disk in the vicinity of an inner Lindblad resonance with a perturbing satellite. Our numerical scheme is one-dimensional so that the spiral shape of a density wave is taken into account through a suitable approximation of the advective terms arising from the fluid orbital motion. This paper is a first attempt to model the co-existence of resonantly forced density waves and short-scale

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31

Yao, Yu, Ruichao Du, Changbo Jiang, Zhengjiang Tang, and Wancheng Yuan. "Experimental Study of Reduction of Solitary Wave Run-Up by Emergent Rigid Vegetation on a Beach." Journal of Earthquake and Tsunami 09, no. 05 (2015): 1540003. http://dx.doi.org/10.1142/s1793431115400035.

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Extensive studies have been carried out to study the performance of mangrove forests in wave height reduction. In this study, the reduction of the inundation and run-up of leading tsunami waves by mangrove forests was investigated through a series of laboratory experiments conducted in a long wave tank. The inundation and run-up were measured using a high speed CCD camera. Solitary waves were used to model the leading tsunami waves. Five vegetation models representing three forest densities and two tree distributions were examined on an impermeable sloping beach, and they were compared with th

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32

Kato, Shoji, and Makoto Tosa. "Excitation of Density Waves on Ram-Pressure-Deformed Galactic Disks." Publications of the Astronomical Society of Japan 46, no. 6 (1994): 559–66. https://doi.org/10.1093/pasj/46.6.559.

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Abstract The excitation of spiral density waves on ram-pressure-deformed galactic disks is discussed. It is shown that excitation is possible by a mechanism similar to that known as tidal instability in dwarf nova systems. That is a resonant interaction between a wave and the deformed part of the disk excites the wave. The so-called V-constant disks are considered. Then, although excitation of some wave modes is possible, the most prominent type is a tightly-wound one-armed retrograde wave.

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33

Steiner, Brian, Erik H. Saenger, and Stefan M. Schmalholz. "Time-reverse imaging with limited S-wave velocity model information." GEOPHYSICS 76, no. 5 (2011): MA33—MA40. http://dx.doi.org/10.1190/geo2010-0303.1.

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Time-reverse imaging is a wave propagation algorithm for locating sources. Signals recorded by synchronized receivers are reversed in time and propagated back to the source location by elastic wavefield extrapolation. Elastic wavefield extrapolation requires a P-wave as well as an S-wave velocity model. The velocity models available from standard reflection seismic methods are usually restricted to only P-waves. In this study, we use synthetically produced time signals to investigate the accuracy of seismic source localization by means of time-reverse imaging with the correct P-wave and a pert

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34

Shalimov, S. L., V. I. Zakharov, M. S. Solov’eva, P. K. Sigachev, M. Yu Nekrasova, and G. M. Korkina. "Wave Perturbations of the Lower and Upper Ionosphere during the 2019 Faxai Tropical Typhoon." Геомагнетизм и аэрономия 63, no. 2 (2023): 216–26. http://dx.doi.org/10.31857/s0016794022600442.

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In this paper, we studied the response of the lower and upper ionosphere to the passage of TyphoonFaxai 2019 using the regional network of ultralong-wave radio translucence stations in the Far East region ofRussia and measurements of electron density perturbations using the SWARM mission satellites. The presentedexperimental data clearly demonstrate wave perturbations of the amplitude and phase of the ULW signal,as well as the electron density during the active stage of the typhoon. The parameters of wave perturbationscorrespond to atmospheric internal gravity waves. The maximum spectral densi

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35

Nyberg, Seve, and Rami Vainio. "Simulating Three-Wave Interactions and the Resulting Particle Transport Coefficients in a Magnetic Loop." Physics 4, no. 2 (2022): 394–408. http://dx.doi.org/10.3390/physics4020026.

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In this paper, the effects of wave–wave interactions of the lowest order, i.e., three-wave interactions, on parallel-propagating Alfvén wave spectra on a closed magnetic field line are considered. The spectra are then used to evaluate the transport parameters of energetic particles in a coronal loop. The wave spectral density is the main variable investigated, and it is modelled using a diffusionless numerical scheme. A model, where high-frequency Alfvén waves are emitted from the two footpoints of the loop and interact with each other as they pass by, is considered. The wave spectrum evolutio

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36

Dally, William R., and Robert G. Dean. "CLOSED-FORM SOLUTIONS FOR THE PROBABILITY DENSITY OF WAVE HEIGHT IN THE SURF ZONE." Coastal Engineering Proceedings 1, no. 21 (1988): 60. http://dx.doi.org/10.9753/icce.v21.60.

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By invoking the assumption that in the surf zone, random waves behave as a collection of individual regular waves, two closed-form solutions for the probability density function of wave height on planar beaches are derived. The first uses shallow water linear theory for wave shoaling, assumes a uniform incipient condition, and prescribes breaking with a regular wave model that includes both bottom slope and wave steepness effects on the rate of decay. In the second model, the shallow water assumption is removed, and a distribution in wave period (incipient condition) is included. Preliminary r

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37

Bau, H. H. "Torsional Wave Sensor—A Theory." Journal of Applied Mechanics 53, no. 4 (1986): 846–48. http://dx.doi.org/10.1115/1.3171869.

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Experimental observations suggest that the speed of propagation of torsional waves in a solid, elastic wave guide with a noncircular cross section is inversely proportional to the density of the fluid adjacent to the waveguide. Thus, by measuring the speed of propagation of the torsional wave, one can infer the density of the fluid. Additionally, the above procedure may be utilized to measure, among other things, liquid level and the composition of binary solutions. A simple theory is derived to correlate the torsional wave speed and the fluid density; the theoretical results are also compared

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38

Lin, N., E. Lee, F. Mozer, G. K. Parks, M. Wilber, and H. Rème. "Nonlinear low-frequency wave aspect of foreshock density holes." Annales Geophysicae 26, no. 12 (2008): 3707–18. http://dx.doi.org/10.5194/angeo-26-3707-2008.

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Abstract. Recent observations have uncovered short-duration density holes in the Earth's foreshock region. There is evidence that the formation of density holes involves non-linear growth of fluctuations in the magnetic field and plasma density, which results in shock-like boundaries followed by a decrease in both density and magnetic field. In this study we examine in detail a few such events focusing on their low frequency wave characteristics. The propagation properties of the waves are studied using Cluster's four point observations. We found that while these density hole-structures were c

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39

Bjeliš, Aleksa, and Kazumi Maki. "Spin-density-wave and charge-density-wave phason coherence lengths in magnetic fields." Physical Review B 45, no. 22 (1992): 12887–92. http://dx.doi.org/10.1103/physrevb.45.12887.

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40

Pradhan, B., B. K. Raj, and G. C. Rout. "Interplay of charge density wave and spin density wave in high-Tc superconductors." Physica C: Superconductivity 468, no. 23 (2008): 2332–35. http://dx.doi.org/10.1016/j.physc.2008.08.010.

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41

Thongcham, K., and P. Udomsamuthirun. "Thermodynamic Properties of Superconductor with Competing Spin-Density Wave and Charge-Density Wave." Journal of Superconductivity and Novel Magnetism 28, no. 8 (2015): 2299–305. http://dx.doi.org/10.1007/s10948-015-3049-y.

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42

ZHANG, XIN, and FUGEN WU. "STRONG MODE TRANSFORMATION OF ELASTIC WAVES BY SPHERICAL SOLID OBJECT." Modern Physics Letters B 23, no. 17 (2009): 2155–65. http://dx.doi.org/10.1142/s0217984909020308.

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We investigate mode transformation between longitudinal mode and transverse mode by spherical solid object. By analyzing the scattering cross section, we find that longitudinal wave (L) transformation to transverse wave (T) is much more than transverse wave (T) transformation to longitudinal wave (L). The ratio of L → T converted waves to T → L converted waves is verified to be independent of frequency. The strongest mode transformation between transverse mode and longitudinal mode can be obtained by choosing a solid sphere with large density and low shear velocity and background with small de

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43

Inoue, Tsuyoshi. "Turbulent Magnetic Field Amplification behind Strong Shock Waves in GRB and SNR." Proceedings of the International Astronomical Union 7, S279 (2011): 335–36. http://dx.doi.org/10.1017/s1743921312013221.

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AbstractUsing three-dimensional (special relativistic) magnetohydrodynamics simulations, the amplification of magnetic field behind strong shock wave is studied. In supernova remnants and gamma-ray bursts, strong shock waves propagate through an inhomogeneous density field. When the shock wave hit a density bump or density dent, the Richtmyer-Meshkov instability is induced that cause a deformation of the shock front. The deformed shock leaves vorticity behind the shock wave that amplifies the magnetic field due to the stretching of field lines.

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44

Trush, Oleksandr, Igor Girka, and Wouter Tierens. "The Eigen ICRF signals localized at Alfven resonances in a tokamak low-density scrape-off layer." East European Journal of Physics, no. 1 (March 3, 2025): 79–90. https://doi.org/10.26565/2312-4334-2025-1-07.

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Abstract – Eigen electromagnetic waves with small toroidal wave indices and positive poloidal wave indices are considered in the Ion Cyclotron Range of Frequencies (ICRF) in a tokamak Scrape-Off Layer (SOL). The waves are shown theoretically to exist in the form of the signals localized at the local Alfven Resonances (ARs). The evanescent regions in the direction of lower plasma density are provided by the presence of the wave nonzero poloidal wave indices. The narrow evanescent regions in the direction of higher plasma density are caused by strong plasma variation. The latter regions separate

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45

Austiguy, George E., and Robert L. Brown. "Application of a mixture theory to stress waves in snow." Annals of Glaciology 18 (1993): 274–80. http://dx.doi.org/10.3189/s0260305500011642.

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A continuum theory of mixtures is applied to model snow as a mixture of an elastic solid and an elastic fluid. Three wave types, two dilational and one rotational, are shown to exist. Numerical evaluation shows velocity and attenuation increasing with frequency for all three waves. Wave velocity increases with increasing density while attenuation decreases with increasing density for all three waves. The first dilational wave is associated with the pore fluid, has a slow wave speed and is highly attenuated. This wave exhibits diffusive behavior at low frequencies and nondispersive behavior at

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46

Austiguy, George E., and Robert L. Brown. "Application of a mixture theory to stress waves in snow." Annals of Glaciology 18 (1993): 274–80. http://dx.doi.org/10.1017/s0260305500011642.

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A continuum theory of mixtures is applied to model snow as a mixture of an elastic solid and an elastic fluid. Three wave types, two dilational and one rotational, are shown to exist. Numerical evaluation shows velocity and attenuation increasing with frequency for all three waves. Wave velocity increases with increasing density while attenuation decreases with increasing density for all three waves. The first dilational wave is associated with the pore fluid, has a slow wave speed and is highly attenuated. This wave exhibits diffusive behavior at low frequencies and nondispersive behavior at

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47

Kononov, D. A., D. V. Bisikalo, V. B. Puzin, and A. G. Zhilkin. "Transient Processes in a Binary System with a White Dwarf." Acta Polytechnica CTU Proceedings 2, no. 1 (2015): 46–49. http://dx.doi.org/10.14311/app.2015.02.0046.

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Using the results of 3D gas dynamic numerical simulations we propose a mechanism that can explain the quiescent multihumped shape of light curves of WZ Sge short-period cataclysmic variable stars. Analysis of the obtained solutions shows that in the modeled system an accretion disk forms. In the outer regions of the disk four shock waves occur: two arms of the spiral tidal shock; “hot line”, a shock wave caused by the interaction of the circum-disk halo and the stream from the inner Lagrangian point; and the bow-shock forming due to the supersonic motion of the accretor and disk in the gas of

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48

Feng, Jiabao, and Yang Song. "Effect of underwater vehicle wake on sound propagation characteristics in stratified medium." Journal of Physics: Conference Series 2718, no. 1 (2024): 012077. http://dx.doi.org/10.1088/1742-6596/2718/1/012077.

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Abstract Due to the uneven distribution of seawater temperature and salinity, the density distribution at different depths is different, thus forming a density step layer with a certain gradient. Acquiring the wake internal wave field generated by underwater vehicles passing through this layered structure and mastering its modulation characteristics for the sound field can provide new technical support for the tracking and identification of underwater vehicles. In this paper, the real size model of a certain type of underwater vehicle is taken as the research object to explore the characterist

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Rosyidi, Sri Atmaja P., Indra Ariani, and Siti Isnaini K. Djaha. "Korelasi Empirik antara Kecepatan Gelombang Permukaan terhadap Kepadatan dan Kekakuan pada Campuran Laston – WC." Semesta Teknika 17, no. 1 (2015): 1–9. http://dx.doi.org/10.18196/st.v17i1.414.

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Density and stiffness of asphaltic mixture are important parameter used for pavement design and construction. These parameter measure the required thickness of pavement.The aim of this study is to investigate the empirical relationship between pavement density and stiffness of Asphalt Concrete-Wearing Course (AC-WC) and surface wave velocity. Surface wave velocity is obtained from the seismic test set up in laboratory. A high frequency of impact source is employed in order to produce the high frequency waves propagating in mixture samples.The wave displacement is measured by accelerometer rece

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Tavakoli, Sasan, Poorya Shaghaghi, Simone Mancini, Fabio De Luca, and Abbas Dashtimanesh. "Wake waves of a planing boat: An experimental model." Physics of Fluids 34, no. 3 (2022): 037104. http://dx.doi.org/10.1063/5.0084074.

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The wake waves generated by the steady movement of a planing hull are analyzed by means of towing tank tests. Two sets of waves, including divergent and transverse waves, are identified and then analyzed. The wave period of the divergent waves is seen to decrease by the increase in speed of the vessel. These waves are seen to damp temporally. The mechanisms that lead to damping of the divergent wave were found to depend on the wave orbital Reynolds number in semi-planing regime, though that of in-planing regime is a function of the Reynolds number of the boat. The wake angle is seen to decreas

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