The interplay between the resultant of the hydrodynamic forces on a falling particle and of its weight represents the physical mechanism of sediment motion in streams. Transport of sediment occurs because of interaction of fluids with loose material of confined boundaries, which create a very complex set of conditions. The loose boundaries deform due to erosion and deposition. Moreover, the cas...

Slips are frequently the cause of fall-related injuries. Identifying modifiable biomechanical requirements for successful recovery is a key prerequisite to developing task-specific fall preventive training programs. The purpose of this study was to quantify the biomechanical role of the upper extremities during the initial phase of a slip resulting in trunk motion primarily in the sagittal plan...

*Katharina Helming, Center for Agricultural Landscape and Land Use Research (ZALF), Eberswalder Str. 84, D-15374 Muencheberg, Germany. *Corresponding author: [email protected] ABSTRACT The kinetic energy of rainstorms plays a paramount role in surface sealing, runoff, and erosion processes. Typically, the kinetic energy rate is calculated based on terminal velocity of vertically falling raindrop...

Abstract In this paper interparticle potential model of the lattice Boltzmann method (LBM) is used to simulate deformation and breakup of a falling droplet under gravity force. First this model is applied to ensure that the surface tension effect is properly implemented in this model. Two tests have been considered. First, it has been checked an initial square drop in a 2D domain can freely def...

this study present several examples of using Excel spreadsheets to and simulate physical phenomena, namely projectile motion, falling motion in The air, wave function particles a one-dimensional box, nuclear radioactive decay. Spreadsheets are used analyze the projectiles with without resistance, objects different terminal velocities, graphs functions probabilities values n, i.e. n=1 n=4, decay...

The mass accretion of a raindrop in different layers the atmosphere is not dealt with so far. A comprehensive brief study motion raindrops through (i) without accretion, (ii) and (iii) finally pressure variation altitude using Bernoulli’s equation illustrated. Acquirement from moist air during resistive medium holds an arbitrary power-law equation. when applied to it, generalized first-order di...