Critical Shear Stress for Erosion of Sand-Mud Mixtures and Pure Mud

Animating Sand, Mud, and Snow

Computer animations often lack the subtle environmental changes that should occur due to the actions of the characters. Squealing car tires usually leave no skid marks, airplanes rarely leave jet trails in the sky, and most runners leave no footprints. In this paper, we describe a simulation model of ground surfaces that can be deformed by the impact of rigid body models of animated characters....

Effect of soil composition on critical water erosion shear stress

Decreasing of water loss and mud cake thickness by CMC nanoparticles in mud drilling

CMC polymer is used as an additive to decrease water loss and mud-cake-thickness in mud drilling. In this study, the effect of CMC and CMC nanoparticles on water loss and mud-cake-thickness in mud drilling is investigated. CMC nanoparticles are made by using of ball milling and their size is measured by Particle size analyzer. CMC and CMC nanoparticles which were prepared by Hamilton batch mixe...

15: Broadband Scattering from Sand and Sand/mud Sediments with Extensive Environmental Characterization

The goal of this research is to further develop and test models of volume scattering by utilizing the existing suite of instrumentation previously developed at APL-UW for the study of high-frequency acoustics. These models include perturbation models applied to scattering from the seafloor due to heterogeneities in the sediment properties and models developed by Dr. Ivakin[1] for scattering fro...

Broadband Scattering from Sand and Sand/Mud Sediments with Extensive Environmental Characterization

A seafloor laser scanner (SLS) was deployed in the Gulf of Mexico during the 2013 Target and Reverberation Experiment (TREX13). This system collected digital elevation maps at 14 locations along the main reverberation track, and these measurements provided roughness power spectra for modeling seafloor acoustic scattering. The spectra were divided into two regimes according to the midand highfre...