Scour depth beneath a pipeline undergoing forced vibration
نویسندگان
چکیده
منابع مشابه
Numerical Investigation of the Influence of Water Jumping on the Local Scour beneath a Pipeline under Steady Flow
Rigid-lid approximation is usually used to replace the free surface in scour simulation. The influence of the rigid lid assumption on the prediction precision of scour hole in steady flow is studied in this paper. Firstly, a local scour model was constructed based on the open sources Computational Fluid Dynamics (CFD) model OpenFOAM, where both the bed load and suspended load were considered. I...
متن کاملPredicting Bridge Pier Scour Depth with SVM
Prediction of maximum local scour is necessary for the safety and economical design of the bridges. A number of equations have been developed over the years to predict local scour depth using laboratory data and a few pier equations have also been proposed using field data. Most of these equations are empirical in nature as indicated by the past publications. In this paper attempts have been ma...
متن کاملFrom Forced Vibration Testing
THE TECHNIQUE OF DETERMINATION OF STRUCTURAL PARAMETERS FROM FORCED VIBRATION TESTING Wai Fan Tsang This thesis details the results of an investigation into a technique for determination of "useful" structural parameters from forced vibration testing. The implementation of this technique to full scale civil engineering structures was achieved by several developments in the experimental and comp...
متن کاملAxially Forced Vibration Analysis of Cracked a Nanorod
Thisstudy presents axially forced vibration of a cracked nanorod under harmonic external dynamically load. In constitutive equation of problem, the nonlocal elasticity theory is used. The Crack is modelled as an axial spring in the crack section. In the axial spring model, the nonrod separates two sub-nanorods and the flexibility of the axial spring represents the effect of the crack. Boundary ...
متن کاملمحافظت از خطوط لوله فراساحلی با اضافه نمودن یک تیغه ی طولی نفوذ ناپذیر به زیر لوله
A number of experiments have been carried out in the current paper to investigate the effect of adding a longitudinal impermeable blade beneath the offshore pipelines on decreasing the scour around them. The main aim of this study was to reduce the hydraulics gradient beneath the pipe so that its magnitude recedes from the critical hydraulics gradient and therefore delays the onset of scour phe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Theoretical and Applied Mechanics Letters
سال: 2015
ISSN: 2095-0349
DOI: 10.1016/j.taml.2015.03.002