Critical shear stress in open channel with flat

In this paper a methodology of shear stress determination and the main results of experimental investigation on the beginning of grain's movement of sandy materials are presented. Six kinds of alluvial sand with mean grain diameter d50 = 0.20-1.7 mm and different uniformity and regularity of gr...

Full description

Saved in:
Bibliographic Details
Published inActa scientiarum Polonorum. Budownictwo. Architectura no. 3
Main Authors Popek, Z.(Szkola Glowna Gospodarstwa Wiejskiego, Warszawa (Poland). Katedra Inzynierii Wodnej i Rekultywacji Srodowiska), Marisch, K.(Freie Universitat, Berlin (Germany). Inst. fur Geographische Wissenschaften)
Format Journal Article
LanguagePolish
Subjects
ALLUVION
ALLUVIUM
ALUVION
ARENA
COURS D'EAU
CURSOS DE AGUA
EXPERIMENTACION EN LABORATORIO
EXPERIMENTATION EN LABORATOIRE
FLUID MECHANICS
GENIE HYDRAULIQUE
HYDRAULIC ENGINEERING
INGENIERIA HIDRAULICA
LABORATORY EXPERIMENTATION
MEASUREMENT
MECANICA DE FLUIDOS
MECANIQUE DES FLUIDES
MECHANICAL PROPERTIES
MEDICION
MESURE
METHODE
METHODS
METODOS
PROPIEDADES MECANICAS
PROPRIETE MECANIQUE
RIVERS
SABLE
SAND
Online AccessGet more information

Cover

More Information
Summary:In this paper a methodology of shear stress determination and the main results of experimental investigation on the beginning of grain's movement of sandy materials are presented. Six kinds of alluvial sand with mean grain diameter d50 = 0.20-1.7 mm and different uniformity and regularity of granulation ware used in experiments. The measurements, in steady uniform flow conditions in laboratory flume with rectangular cross-section and sandy bottom were carried out at variable water depths and bottom slopes. Investigations confirmed influence of granulation irregularity of sandy bed material on dimensionless critical shear stress. Based on measurements carried out in range Re = 3-55 were determined expressions for sand-grain height of flat bottom surface in conditions of beginning grain's movement, with consideration of uniformity and regularity of granulation
Bibliography:2005000646
N01
ISSN:1644-0633
2544-1760