標(biāo)題: Titlebook: Aeolian Grain Transport 1; Mechanics Ole E. Barndorff-Nielsen,Brian B. Willetts Conference proceedings 1991 Springer-Verlag Wien 1991 Sedim [打印本頁(yè)] 作者: supplementary 時(shí)間: 2025-3-21 17:16
書(shū)目名稱Aeolian Grain Transport 1影響因子(影響力)
書(shū)目名稱Aeolian Grain Transport 1影響因子(影響力)學(xué)科排名
書(shū)目名稱Aeolian Grain Transport 1網(wǎng)絡(luò)公開(kāi)度
書(shū)目名稱Aeolian Grain Transport 1網(wǎng)絡(luò)公開(kāi)度學(xué)科排名
書(shū)目名稱Aeolian Grain Transport 1被引頻次
書(shū)目名稱Aeolian Grain Transport 1被引頻次學(xué)科排名
書(shū)目名稱Aeolian Grain Transport 1年度引用
書(shū)目名稱Aeolian Grain Transport 1年度引用學(xué)科排名
書(shū)目名稱Aeolian Grain Transport 1讀者反饋
書(shū)目名稱Aeolian Grain Transport 1讀者反饋學(xué)科排名
作者: NEXUS 時(shí)間: 2025-3-21 23:36 作者: Cubicle 時(shí)間: 2025-3-22 03:58 作者: 傳染 時(shí)間: 2025-3-22 08:16 作者: Gorilla 時(shí)間: 2025-3-22 09:04 作者: 情感脆弱 時(shí)間: 2025-3-22 16:40
Thomas Reichmann,Alfred Vo?schulte obtain explicit analytic expressions, approximations are made in all of the three subprocesses constituting the model: the trajectory model, the wind modification model, and the grain-bed collision model. Explicit formulae are derived for the transport rate and for the flux of grains from the bed i作者: 善于 時(shí)間: 2025-3-22 20:26 作者: 享樂(lè)主義者 時(shí)間: 2025-3-23 00:21
https://doi.org/10.1007/978-3-658-18380-6ere made at one second intervals to assess mass-flux response to velocity variations. Resulting grain flux and velocity series demonstrate the variability concealed by conventional time-averaged data. In steady tunnel winds, time-dependent mass transport rates are found to correlate better with fluc作者: animated 時(shí)間: 2025-3-23 04:14 作者: Moderate 時(shí)間: 2025-3-23 06:57
Prospects of the further development of EISquilibrium boundary layer over a rough bed with saltation may bias the wind gradient measurements, especially in short wind tunnels. Other discrepancies may be due to transient transport conditions caused by changes in bed texture and grain size composition. Wind profile data show that the aerodynam作者: 后天習(xí)得 時(shí)間: 2025-3-23 12:21 作者: 受傷 時(shí)間: 2025-3-23 17:18 作者: Prophylaxis 時(shí)間: 2025-3-23 20:55 作者: COMA 時(shí)間: 2025-3-24 01:05 作者: 表兩個(gè) 時(shí)間: 2025-3-24 03:11 作者: OVER 時(shí)間: 2025-3-24 07:45 作者: doxazosin 時(shí)間: 2025-3-24 12:44
Acta Mechanica. Supplementahttp://image.papertrans.cn/a/image/150460.jpg作者: 光明正大 時(shí)間: 2025-3-24 15:43 作者: inventory 時(shí)間: 2025-3-24 19:11
Wind modification and bed response during saltation of sand in airerate winds: saltation. The model consists of four compartments corresponding to (1) aerodynamic entrainment, (2) grain trajectories, (3) grain-bed impacts, and (4) momentum extraction from the wind. Each sub-model encapsulates the physics of the process, and is constrained where necessary by experi作者: 忍受 時(shí)間: 2025-3-25 02:00 作者: 青石板 時(shí)間: 2025-3-25 06:16 作者: 銼屑 時(shí)間: 2025-3-25 09:25
Saltation layers, vegetation canopies and roughness lengthse fluid). Therefore, information on turbulence and momentum transfer in vegetation canopies provides guidance for turbulence in saltation layers. Working from the simplest gradient-diffusion theory for momentum transfer known to be useful in vegetation canopies, the paper explores a first-order theo作者: poliosis 時(shí)間: 2025-3-25 12:04
Grain transport rates in steady and unsteady turbulent airflowsere made at one second intervals to assess mass-flux response to velocity variations. Resulting grain flux and velocity series demonstrate the variability concealed by conventional time-averaged data. In steady tunnel winds, time-dependent mass transport rates are found to correlate better with fluc作者: Fsh238 時(shí)間: 2025-3-25 18:15
Initiation of motion of quartz sand grainst disturbed grains usually, but not always, roll before taking off into reptation or saltation. Time-averaged description of the population of initial motions is deficient because of the importance of pronounced flurries of grain activity which occur at intervals. The flurries are clearly associated作者: 執(zhí) 時(shí)間: 2025-3-25 22:10 作者: 高貴領(lǐng)導(dǎo) 時(shí)間: 2025-3-26 02:35
An experimental study of Froude number effect on wind-tunnel saltationette [11] concluded that an independence Froude number criterion did apply to the problem and they estimate, based on wind-tunnel Froude number data ranging from 35 to 80, an independence Froude number value of about 20 for saltating flows to be free of facility constraints imposed on the saltation.作者: Coterminous 時(shí)間: 2025-3-26 06:11
Grain shape effects on aeolian sediment transportmining sediment transport rate. Collision generates more bed activity as sphericity increases, whereas grains with a low sphericity are more readily entrained at slow windspeeds by direct action of the wind. As sphericity decreases grain trajectories become longer and flatter.作者: acquisition 時(shí)間: 2025-3-26 11:45
Two- and three dimensional evolution of granular avalanche flow — theory and experiments revisited with a constant internal angle of friction. Bed resistance is modeled through a sliding law by additively composing the basal traction of a Mohr-Coulomb stress with bed friction angle δ and a viscous drag that is proportional to the first or second power of the sliding velocity. The theoretical mod作者: Abominate 時(shí)間: 2025-3-26 13:08
A review of recent progress in our understanding of aeolian sediment transportck mechanism) is treated in the context of recent modelling of the self-regulating saltation process. The link between saltation and suspension is discussed briefly. We conclude by outlining future research directions that must involve a greater symbiosis of experimentalists and theoreticians, working both at the grain and the bedform scales.作者: thalamus 時(shí)間: 2025-3-26 17:00 作者: 禁令 時(shí)間: 2025-3-27 00:44 作者: 邊緣帶來(lái)墨水 時(shí)間: 2025-3-27 03:37 作者: 可以任性 時(shí)間: 2025-3-27 08:25
Prospects of the further development of EIS the equation could be an important tool in validating wind tunnel data. Transport rate data from the Aarhus wind tunnel differ significantly from the Lettau and Bagnold equations, but agree well with predictions from a new analytical model.作者: 夾克怕包裹 時(shí)間: 2025-3-27 09:41 作者: 或者發(fā)神韻 時(shí)間: 2025-3-27 15:32 作者: Bone-Scan 時(shí)間: 2025-3-27 20:20 作者: Graduated 時(shí)間: 2025-3-27 22:01
Two- and three dimensional evolution of granular avalanche flow — theory and experiments revisitedeen obtained with this theory in chute flows along straight and curved beds and unconfined motions of a finite mass of a cohesionsless granular material down plane and curved beds. The results are compared with experimental findings from extensive laboratory tests, and inferences are drawn that derive from such comparisons.作者: 癡呆 時(shí)間: 2025-3-28 04:03
Entwicklungsperspektiven des Controllingck mechanism) is treated in the context of recent modelling of the self-regulating saltation process. The link between saltation and suspension is discussed briefly. We conclude by outlining future research directions that must involve a greater symbiosis of experimentalists and theoreticians, working both at the grain and the bedform scales.作者: 烤架 時(shí)間: 2025-3-28 07:30
Controlling in mittelst?ndischen Unternehmen attains a steady state, characterised by a steady wind and a stationary grain population, after roughly 2 seconds. The response of the total mass flux to shear velocity is approximately cubic. Finally, potential uses of the model in studying ripple formation and dust emission are discussed.作者: engender 時(shí)間: 2025-3-28 11:38 作者: 易于出錯(cuò) 時(shí)間: 2025-3-28 16:18 作者: 冰雹 時(shí)間: 2025-3-28 21:45 作者: Mangle 時(shí)間: 2025-3-29 02:22
Initiation of motion of quartz sand grainsportrayal of the development of a saltation layer is plausible and can be checked by means of flux profile measurements. However, it emphasises the need for more information about turbulence in the grain laden layer.作者: 鐵塔等 時(shí)間: 2025-3-29 04:25 作者: 一起平行 時(shí)間: 2025-3-29 09:32 作者: Talkative 時(shí)間: 2025-3-29 14:24
0939-7906 everal decades. However, there has been a tendency for the resulting publications to be scattered widely in the scientific litera- ture and consequently to provide a less coherent resource than might otherwise be hoped for. In particular, cross-reference between the literature on desert and coastal 作者: incontinence 時(shí)間: 2025-3-29 18:45
