Results 81 to 90 of about 107,957 (205)

Characterization and flow of food and mineral powders : a thesis presented in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Engineering at Massey University, Manawatū, New Zealand [PDF]

open access: yes, 2016
Powders are important commodities across different industries, such as the food and pharmaceutical industries. In these industries, powders are usually made, mixed, milled, packaged, and stored; these operations require the powders to move and flow ...
Saw, Horng Yuan
core  

On the stabilizing influence of silt on sand beds [PDF]

open access: yes, 2013
In marine environments, sediments from different sources are stirred and dispersed, generating beds that are composed of mixed and layered sediments of differing grain sizes.
Bartzke, Gerhard   +3 more
core   +2 more sources

Open Channel Flow with Variable Bed Shear Stress

open access: yesPROCEEDINGS OF HYDRAULIC ENGINEERING, 1990
A transient process of the Reynolds-stress distribution due to a change of the bed shear stress in an open channel flow is investigated and a relaxation model, or a convolution-integral model with a concept of an impulse response, is proposed. The impulse response of the Reynolds-stress distribution for the change of bed shear stress is determined by a
Tetsur OTSUJIMOTO   +2 more
openaire   +2 more sources

Computer algebra models the inertial dynamics of a thin film flow of power law fluids and other non-Newtonian fluids [PDF]

open access: yes, 2007
Consider the evolution of a thin layer of non-Newtonian fluid. I model the case of a nonlinear viscosity that depends only upon the shear-rate; power law fluids are an important example, but the analysis is for general nonlinear dependence upon the shear-
Roberts, A. J.
core  

Experimental validation of some basic assumptions used in physically based soil [PDF]

open access: yes, 2011
In spring 2009, four rill experiments were accomplished on a fallow land. Most external factors as well as discharge quantity (9 L min-1) were held constant or at least in the same range.
Ries, J.B.   +3 more
core   +2 more sources

Erosion of fine sediments from a rough bed

open access: yesE3S Web of Conferences, 2018
Gravel beds in river systems represent important aquatic habitats, which may be endangered by the introduction of large amounts of fine sediments. In order to better understand the interaction between fine sediments and coarse immobile beds in sediment ...
Trevisson Michele, Eiff Olivier
doaj   +1 more source

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

open access: yes, 2019
Dry, wet, dense, and dilute granular flows have been previously considered fundamentally different and thus described by distinct, and in many cases incompatible, rheologies.
de Klerk, David N.   +4 more
core   +1 more source

Near-Bed Turbulent Kinetic Energy Budget Under a Large-Scale Plunging Breaking Wave Over a Fixed Bar [PDF]

open access: yes, 2018
Hydrodynamics under regular plunging breaking waves over a fixed breaker bar were studied in a large-scale wave flume. A previous paper reported on the outer flow hydrodynamics; the present paper focuses on the turbulence dynamics near the bed (up to 0 ...
Cáceres, Iván   +6 more
core   +7 more sources

Bed shear stress distribution across a meander path

open access: yesJournal of Water and Climate Change
ABSTRACT Laboratory experimentation for bed shear stress distribution has been carried out in two sets of meandering channels. The channels have crossover angles of 110° and 60° constructed by ‘sine-generated’ curves over a flume of 4 m width. Variations in bed roughness were studied for the meandering main channel.
Arpan Pradhan   +5 more
openaire   +1 more source

Laboratory studies on bedload transport under unsteady flow conditions

open access: yesJournal of Hydrology and Hydromechanics, 2018
Two sets of triangular hydrographs were generated in a 12-m-long laboratory flume for two sets of initial bed conditions: intact and water-worked gravel bed. Flowrate ranging from 0.0013 m3 s-1 to 0.0456 m3 s-1, water level ranging from 0.02 m to 0.11 m,
Mrokowska Magdalena M.   +5 more
doaj   +1 more source

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