175 citations · 581 across the 10 of their papers we have counts for
10 papers
On buoyancy in disperse two-phase flow and its impact on well-posedness of two-fluid models
Rui Zhu, Yulan Chen, Katharina Tholen +2
The Maxey-Riley-Gatignol equation for the flow around a sphere at low particle Reynolds number tells us that the fluid-particle interaction force decomposes into a contribution fro…
The role of energetic flow structures on the aeolian transport of sediment and plastic debris
Manousos Valyrakis, Xiao Zhao, Thomas Pähtz +1
Recently, significant progress has been made in conceptually describing the dynamic aspects of coarse particle entrainment, which has been explored experimentally for open channel…
Aeolian sand transport: Scaling of mean saltation length and height and implications for mass flux scaling
Thomas Pähtz, Katharina Tholen
Wind tunnel measurements of the mean saltation length and of different proxies of the mean saltation height in saturated aeolian sand transport indicate that and ar…
The physics of sediment transport initiation, cessation, and entrainment across aeolian and fluvial environments
Thomas Pähtz, Abram H. Clark, Manousos Valyrakis +1
Predicting the morphodynamics of sedimentary landscapes due to fluvial and aeolian flows requires answering the following questions: Is the flow strong enough to initiate sediment…
Comment on "Distinct Thresholds for the Initiation and Cessation of Aeolian Saltation From Field Measurements" by Raleigh L. Martin and Jasper F. Kok: Alternative Interpretation of Measured Thresholds as two Distinct Cessation Thresholds
Thomas Pähtz
Martin and Kok (2018a) measured two distinct aeolian saltation transport thresholds: a larger threshold below which continuous saltation transport becomes intermittent and a smalle…
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…
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…
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…
The apparent roughness of a sand surface blown by wind from an analytical model of saltation
Thomas Pähtz, Jasper F. Kok, Hans J. Herrmann
We present an analytical model of aeolian sand transport. The model quantifies the momentum transfer from the wind to the transported sand by providing expressions for the thicknes…
Why do Particle Clouds Generate Electric Charges?
Thomas Pähtz, Hans J. Herrmann, Troy Shinbrot
Grains in desert sandstorms spontaneously generate strong electrical charges; likewise volcanic dust plumes produce spectacular lightning displays. Charged particle clouds also cau…