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Paper Information

Title: 

LAGRANGE-LAGRANGE TWO-PHASE FLOW SIMULATION OF SALTATION TRANSPORT

Type: PAPER
Author(s): YEGANEH BAKHTIARY ABBASS,KAZEMI EHSAN,HOUSHANGI HAMID
 
 
 
Name of Seminar: INTERNATIONAL CONFERENCE ON COASTS, PORTS AND MARINE STRUCTURES (ICOPMAS) PORTS & MARITIME ORGANIZATION
Type of Seminar:  CONFERENCE
Sponsor:  PORTS AND MARITIME ORGANIZATION
Date:  2010Volume 9
 
 
Abstract: 

INTRODUCTION: THE STUDY OF BED-LOAD TRANSPORT IS VERY ESSENTIAL FOR VARIOUS HYDRAULIC AND ENVIRONMENTAL PROBLEMS IN COASTAL ENGINEERING DISCIPLINE. THE MODE OF TRANSPORT IS A FUNCTION OF THE BED SHEAR STRESS, WHICH MAY OCCUR IN SALTATION OR SHEET-FLOW. FROM LOW TO MEDIUM FLOW TRACTIVE FORCES THE BED-LOAD TRANSPORT OCCURS IN SALTATION, IN WHICH THE UPPER LAYERS OF BED GRAINS BEGIN TO MOVE DUE TO DRAG FORCES INITIATED BETWEEN THE FLOW AND SEDIMENT. ON OF THE MAJOR CHALLENGE IN FRONT OF THE COASTAL ENGINEERS IS TO SIMULATE THE BED-LOAD TRANSPORT DUE TO COASTAL CURRENTS IN NEARSHORE AREA. ON THE OTHER HAND, THE NUMERICAL MODELING OF BED-LOAD TRANSPORT IS VERY COMPLICATED BECAUSE OF ITS HYDRODYNAMIC PROCESS. THIS HYDRODYNAMICS PROCESS USUALLY CAN BE EXPRESSED BY THE FLUID-SEDIMENT INTERACTIONS AND INTERGRANULAR STRESSES.

 
Keyword(s): BED-LOAD TRANSPORT, SALTATION, TWO-PHASE FLOW MODEL, SMOOTHED PARTICLE HYDRODYNAMICS (SPH), MOMENTUM TRANSFER
 
 
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