output
20082019
most citedGeneration of higher-order rogue waves from multi-breathers by double degeneracy in an optical fibre

104 citations

17 papers

cond-mat.soft2019★ 81 cited

Unification of Aeolian and Fluvial Sediment Transport Rate from Granular Physics

Thomas Pähtz, Orencio Durán

One of the physically least understood characteristics of geophysical transport of sediments along sediment surfaces is the well known experimental observation that the sediment tr…

cond-mat.soft2019★ 48 cited

Local Rheology Relation with Variable Yield Stress Ratio across Dry, Wet, Dense, and Dilute Granular Flows

Thomas Pähtz, Orencio Durán, David N. de Klerk +2

Dry, wet, dense, and dilute granular flows have been previously considered fundamentally different and thus described by distinct, and in many cases incompatible, rheologies. We ca…

physics.ao-ph2018★ 40 cited

The Critical Role of the Boundary Layer Thickness for the Initiation of Aeolian Sediment Transport

Thomas Pähtz, Manousos Valyrakis, Xiao-Hu Zhao +1

Here, we propose a conceptual framework of Aeolian sediment transport initiation that includes the role of turbulence. Upon increasing the wind shear stress above a threshold v…

physics.flu-dyn2018★ 16 cited

Front Velocity and Front Location of Lock-exchange Gravity Currents Descending a Slope in a Linearly Stratified Environment

Liang Zhao, Zhiguo He, Yafei Lv +3

Gravity currents descending a slope in a linearly stratified environment can be frequently encountered in nature. However, few studies have quantitatively investigated the evolutio…

nlin.SI2017★ 104 cited

Generation of higher-order rogue waves from multi-breathers by double degeneracy in an optical fibre

Lihong Wang, Jingsong He, Hui Xu +1

In this paper, we construct a special kind of breather solution of the nonlinear Schrödinger (NLS) equation, the so-called breather-positon ({\it b-positon} for short), which can b…

nlin.SI2017★ 36 cited

The height of an th-order fundamental rogue wave for the nonlinear Schrödinger equation

Lihong Wang, Chenghao Yang, Ji Wang +1

The height of an th-order fundamental rogue wave for the nonlinear Schrödinger equation, namely , is proved directly by a series of row operations on…

cond-mat.soft2016★ 30 cited

Universal friction law at granular solid-gas transition explains scaling of sediment transport load with excess fluid shear stress

Thomas Pähtz, Orencio Durán

A key interest in geomorphology is to predict how the shear stress exerted by a turbulent flow of air or liquid onto an erodible sediment bed affects the transport load $M\tild…

physics.geo-ph2016★ 40 cited

Fluid forces or impacts: What governs the entrainment of soil particles in sediment transport mediated by a Newtonian fluid?

Thomas Pähtz, Orencio Durán

In steady sediment transport, sediment deposition is balanced by entrainment of bed particles by fluid forces or particle-bed impacts. Here we propose a proxy to determine the role…

physics.ao-ph2016★ 54 cited

The Cessation Threshold of Nonsuspended Sediment Transport Across Aeolian and Fluvial Environments

Thomas Pähtz, Orencio Durán

Using particle-scale simulations of non-suspended sediment transport for a large range of Newtonian fluids driving transport, including air and water, we determine the bulk transpo…

physics.geo-ph2015★ 20 cited

Is it appropriate to model turbidity currents with the three-equation model?

Peng Hu, Thomas Pähtz, Zhiguo He

The three-equation model (TEM) was developed in the 1980s to model turbidity currents (TCs) and has been widely used ever since. However, its physical justification was questioned…

physics.ao-ph2015★ 36 cited

Discrete Element Method simulations of the saturation of aeolian sand transport

Thomas Pähtz, Amir Omeradžić, Marcus V. Carneiro +2

The saturation length of aeolian sand transport (), characterizing the distance needed by wind-blown sand to adapt to changes in the wind shear, is essential for accurate mode…

physics.flu-dyn2015★ 14 cited

The fluctuation energy balance in non-suspended fluid-mediated particle transport

Thomas Pähtz, Orencio Durán, Tuan-Duc Ho +2

Here we compare two extreme regimes of non-suspended fluid-mediated particle transport, transport in light and heavy fluids ("saltation" and "bedload", respectively), regarding the…

physics.ao-ph2014★ 23 cited

Well-balanced and flexible morphological modeling of swash hydrodynamics and sediment transport

Peng Hu, Wei Li, Zhiguo He +2

Existing numerical models of the swash zone are relatively inflexible in dealing with sediment transport due to a high dependence of the deployed numerical schemes on empirical sed…

cond-mat.soft2013★ 75 cited

Flux saturation length of sediment transport

Thomas Pähtz, Jasper F. Kok, Eric J. R. Parteli +1

Sediment transport along the surface drives geophysical phenomena as diverse as wind erosion and dune formation. The main length-scale controlling the dynamics of sediment erosion…

physics.ao-ph2012★ 84 cited

Midair collisions enhance saltation

Marcus V. Carneiro, Nuno A. M. Araújo, Thomas Pähtz +1

Here we address the old question in Aeolian particle transport about the role of midair collisions. We find that, surprisingly, these collisions do enhance the overall flux substan…

cond-mat.soft2012★ 42 cited

Analytical model for flux saturation in sediment transport

Thomas Pähtz, Eric J. R. Parteli, Jasper F. Kok +1

The transport of sediment by a fluid along the surface is responsible for dune formation, dust entrainment and for a rich diversity of patterns on the bottom of oceans, rivers, and…

physics.ao-ph2008★ 31 cited

Different responses of the upper ocean to typhoon Namtheun

Yuan-Jian Yang, Liang Sun, Yun-Fei Fu

The responses of the upper ocean to typhoon Namtheun in July 2004 are investigated by sea surface measurements and vertical profiles. Pre-typhoon ocean environment played an import…