In this paper,several numerical examples are presented to analyze the pipeline configuration for different laying water depth,pipe diameter,thickness of concrete weighted coating layer,length and radius of the stinger,initial pipeline inclination angle,control strain and axial tension.12345NextNumerical modelling of the slurry flow in pipelines and Large scale numerical modelling of slurry flow in horizontal pipelines has been carried out.A combination of analytical and commercial CFD modelling,with Eulerian two-phase flow models,has been used in the present investigation.The modelling results are validated with well-documented experimental data and are found to be in good agreement.2021 Virtual Conference Detailed Agenda Pipeline Numerical simulation is an attractive tool for tuning and testing these devices because actually triggering them shuts down the pipeline,which is an expensive,time-consuming procedure.This presents a challenging simulation problem because numerical dispersion affects the results of interest how much a transient pressure wave decays by the
Jul 17,2001·The localization analysis is based on a DruckerPragertype elastoplastic hardening model for nonassociated plastic flow at small strains,which we represent in spectral form.For this type of constitutive model,general analytical formulas for the socalled critical hardening modulus and the inclination angle of critical discontinuity Advances in Mechanical Engineering 2017,Vol.9(9) 110 high-precision inclination measurements is much better than the direct fitting by means of the leveling data.Deflection estimation method Elastic foundation beam model for underground pipeline For a typical continuously welded pipeline,it is reason-able to assume that the pipe segments and the butt welds have the same material properties.A two-An improved two layer model for horizontal slurry pipeline Shofique Uddin AHMED,NUMERICAL INVESTIGATIONS ON FLOW CHARACTERISTICS OF SAND-WATER SLURRY THROUGH HORIZONTAL PIPELINE USING COMPUTATIONAL FLUID DYNAMICS,Journal of Thermal Engineering,10.18186/thermal.729205,(140-151),(2020).
Numerical model was adopted for the field case.Based on the field report,Flow Loop X1 consisted of well X1 and well X2, Also critical was the modelling of the piping diameter,pipe length,wall thickness and wall type material to reflect the field geometry. 3.4.3 Pressure Drop per Metre Comparisons for Inclination Angle (00- 900) 55Cited by 10Publish Year 2018Author Duan Yang,Yimin Xia,Dun Wu,Peng Chen,Guiying Zeng,Xianqiong ZhaoYuexin Yang's research works Civil Aviation Flight Yuexin Yang's 4 research works with 33 citations and 250 reads,including Numerical modeling of the critical pipeline inclination for the elimination of the water accumulation on the pipe floor Cited by 15Publish Year 2000Author Y.Masuda,Q.Doan,M.Oguztoreli,S.Naganawa,T.Yonezawa,A.Kbayashi,A.KampQDPLF3RLVVRQHIIHFWRQWUDQVLHQWNumerical modeling of water hammer with fluid structure interaction in a pipeline with pipeline during waterhammer.The inclination angle of the pipeline was not larger than 0.5 deg.A quick- peak,caused by almost stepwise flow cut-off,the pressure measured at the valve falls to the critical
In this paper,a novel numerical approach is proposed for the laying of pipelines in the so-called J-lay method,taking into account the importance of both pipe embedment and ocean currents.TheCited by 1Publish Year 2020Author Xiaoqin BBNg,Dongxin Li,Xiao Sun,Xingjie Mou,Y.Frank Cheng,Yuexin Yang WORK PIPE DIAMETEPIPE INCLINATION (DE FLUIDS RESEARCH OBJ(Wang et al.,201 25.4 0 Heavy oil flow pattern (Al-Wahaibi et,al 25.4/19 0 Mineral oil -(Flores et al.,19 50.8 90 Mineral oil Pressure loss,(Flores et al.,19 50.8 90 Mineral oil flow pattern 15 rows on sciencedirect(PDF) Numerical modeling of the critical pipeline Abstract and Figures In this work,numerical models were developed to investigate the critical inclination of a pipeline to eliminate the water accumulation at the floor of the pipe carryingCited by 2Publish Year 2020Author E.Hamami Bissor,A.Yurishchev,A.Ullmann,N.Brauner2021 Pipeline Simulation Short Course Pipeline Numerical methods of modelling discussion includes direct integration of steady state,methods of characteristics,and the Finite Different Method including i) explicit,implicit and semi-implicit methods The approach will also include the critical effect of pipe inclination. Real time pipeline modelling paradigms and dealing with bad
The numerical model developed for the study allows for the interaction between the drill cuttings and drilling fluid,and follows broadly the two-layer model reported in the literature.It enabled the determination of pressure,fluid and cuttings velocity,fluid and cuttings concentration distributions inside the annulus at different times.Development of closure relations for the motion of Taylor Jun 17,2020·This study analyses the flow of Taylor bubbles through vertical and inclined annular pipes using high-fidelity numerical modeling.A recently developed phase-field lattice Boltzmann method is employed for the investigation.Development of closure relations for the motion of Taylor Jun 17,2020·This study analyses the flow of Taylor bubbles through vertical and inclined annular pipes using high-fidelity numerical modeling.A recently developed phase-field lattice Boltzmann method is employed for the investigation.
The numerical results provide evidence that the critical depth of cut d * controlling the failure mode transition is related to the characteristic length = (K Ic c) 2 with K Ic denoting the material toughness and c its unconfined compressive strength.The nature of frictional contact between the cutter face and the rock in the ductile failure mode is also examined.Effects of aspect ratio and inclination angle on Jun 19,2020·For validation purposes,results obtained from the numerical model have been compared with the available experimental data.The good agreement observed between the results confirms the validity of the numerical model.Analysis of the mean flow results shows a strong dependence of the aerodynamic forces with the aspect ratio and inclination angle.Hydraulic Transients Induced by Pigging Operation in Pigging in pipelines basically performs operations for five reasons including cleaning the pipe interior,batching or separating dissimilar products,displacement,measurement,and internal inspection.A model has been proposed for the dynamic simulation of the pigging process after water pressure testing in a long slope pipeline.In this study,an attempt has been made to analyze two serious
Journal of Pipeline Science and Engineering.The Journal of Pipeline Science and Engineering aims to provide an essential medium for communication and dissemination of new ideas,original researches and technology innovation in the general area of energy pipelines transporting oil,natural gas and non-conventional fossil fuels (e.g.,heavy oil Mechanical Behavior of Submarine Pipelines under Active Aug 03,2018·The investigation uses strain-based criteria to estimate pipeline performance based on rigorous numerical modeling and simulation of a soilpipe system,accounting for nonlinear material behavior and large strain of both pipeline and surrounding seabed soil. A uniform design experiment is also carried out to predict the critical fault Modeling Subsea Pipeline Movement Subjected toAug 03,2019·Understanding the subsea pipeline movement driven by submarine debris flow is critical to the optimization of pipeline routes and mitigation of submarine geohazards.In this paper,a coupling model of submarine debris flow with pipeline interaction is presented to investigate pipeline movement subjected to debris flow impact.
In this work,numerical models were developed to investigate the critical inclination of a pipeline to eliminate the water accumulation at the floor of the pipe carrying oil-water fluid.Numerical Analysis of Soil Deformation and Collapse Due to Both the length and width of the model are 1800 m,the height is 430 m,and the inclination is 10°.From top to bottom,the structure of the soil is divided into overlying,hydrate,and lower layers.The thicknesses of the overlying,hydrate,and lower layers are 260,70,Numerical Analysis of Soil Deformation and Collapse Due to Feb 18,2021·Numerical Model of Trial Exploitation Taking the geological features of the offshore waters of China as a reference,as shown in Figure Figure8 8 ,the sediment layer is divided into three parts the overlying layer,hydrate layer,and lower soil layer,with thicknesses of 140,1030,and 100200 m,respectively.
The research for gasliquid two-phase flow is very important for flow assurance and flow stability of chemical transportation.In terms of transportation pipelines,the curved section is a very significant part.Therefore,the present work proposes a transient slug flow model for the curve pipes,and we conducted some experiments to validate it.This slug flow model is a four-equation model Numerical Study of Static Instability of Pipe Conveying mathematical model for determining the critical ow velocity of a pinned-pinned pipe composed of uniform modules,design parameters include the wall thickness and the length of each module (Maalawi and Ziada,2002).Chellapilla and Simha (2008),studied the effect of two-parameter foundation on the natural frequenciesNumerical Study on Diesel Oil Carrying Water Behaviors in Jul 24,2019·Water accumulation in low-lying areas of product oil pipelines always leads to corrosion damage of pipelines.Predicting the law of product oil carrying water can provide reference for the optimization of pipeline operation parameters and corrosion protection.A Volume of Fluid (VOF) model of oil-water two-phase flow based on Large Eddy Simulation (LES) was established to investigate the
2.2 Numerical modeling procedures Results from centrifuge model test No.2 from VELACS project,conducted by Taboada and Dobry (1995) at Rensselaer Polytechnic Institute (RPI),are used to demonstrate the capability of the numerical program for reliable analysis of dynamic response of a saturated soil layer.2.2.1 Centrifuge testNumerical analysis of liquefaction-induced lateral 2.2 Numerical modeling procedures Results from centrifuge model test No.2 from VELACS project,conducted by Taboada and Dobry (1995) at Rensselaer Polytechnic Institute (RPI),are used to demonstrate the capability of the numerical program for reliable analysis of dynamic response of a saturated soil layer.2.2.1 Centrifuge testNumerical investigation of pipeline transport Jan 01,2018·For inclined straight pipes,the pressure drop of the pipeline increases slowly with the pipe inclination angle increasing from 0° to 60°,but increases rapidly when the pipe inclination angle increases from 60° to 90°; the transport capacity reduces slowly at first and then increases rapidly with the increase of pipe inclination angle,and the lowest value appears at 4560°.
Feb 01,2018·Alternatively,numerical simulations could provide reliable design as long as they can be calibrated by field data or laboratory tests,although a number of difficulties have been identified by researchers attempting to execute such modeling of strike-slip fault-pipeline interaction ,,,and of normal fault-pipeline interaction .Three-dimensional finite element analysis can account for (a) axialNumerical modeling of the critical pipeline inclination 14 In this work,numerical models were developed to investigate the critical 15 inclination of a pipeline to eliminate the water accumulation at the floor of the pipe 16 carrying oil-water fluid.Numerical modeling of the critical pipeline inclination 15 rows·Jul 11,2020·In this work,numerical models were developed to investigate the critical inclination of a
Abstract In this work,numerical models were developed to investigate the critical inclination of a pipeline to eliminate the water accumulation at the floor of the pipe carrying oil-water fluid.Computational fluid dynamics software was used to establish a geometric model of the pipe with various inclination angles,and a grid-independent verification was conducted to determine a reasonable Numerical modelling of the seismic response of gas The numerical analysis was made in the finite difference software,FLAC 2D.The first part focuses on understanding the modelling concepts necessary to provide an accurate modelNumerical studies on effect of check valve performance on This range of critical air entrainment values can only be obtained through numerical experimentation for a given pumping system.Figure 8 shows that entrained,entrapped or released gases significantly after the flow reversal time. vg p pipeline inclination The above numerical model also provides useful information on the effects of air
proposed to represent the effects of inclination angle,pipe diameter and fluid properties on the onset of slugging.Numerical simulation is carried out to predict the onset of slugging using a three-dimensional two-fluid model in commercial software CFX 13.The free surface treatmentPAPER OPEN ACCESS Related content Numericalan inclination angle of 45 hydraulic transient process of the water pipeline with pressure reducing valve is calculated in literature ,the results show that the maximum water hammer pressure of the relief valve is significantly the method of local mesh refinement of critical region has been introduced in this paper for more credible Prediction of the critical gas flow rate for avoiding Sep 01,2020·The models enable predicting the effect of the system parameters on the critical gas flow rate required for purging-out the liquid from the pipeline system.Effects of gas pressure,pipe diameter and inclination,surface wetting,and liquid viscosity were considered.
The model was applied to simulate the water carrying process under various oil inlet velocities and the inclined pipe angles.The results show that as the pipeline inclined angle is 10~20° and the oil inlet velocity is 0.66 m/s,the flow patterns in the pipeline mainly include stratified flow and wavy stratified flow.Research Progress of Sand Transport Mechanism and Critical Jan 15,2021·The effects of particle properties,fluid properties and pipeline structure on the carrying capacity of single-phase and multiphase flow carrying sand are introduced,with emphasis on factors such as particle size,liquid viscosity,flow regime and pipeline inclination.As for modeling studies,the sand transport models can be classified to
Based on the multi-point inclination measurements,safety monitoring of underground pipeline subjected to ground deformation is supposed to achieve two-level targets (1) detection and localization of the abnormal event (e.g.surface load,construction activity,ground settlement) and (2) estimation of pipeline deflection.Study of Gas Condensation in Transmission Pipelines With a Such an predicting and handling two-phase fluid dynamics in pipelines.Such an approach is especially critical in the design of long-distance pipelines where the interactions between the two phases,coupled with varying inclinations,can significantly affect the pressure profile along the pipeline.pipeline.Temperature Distribution Model for Predicting the Temperature Distribution Model for Predicting the Precipitation of Wax in a Wellbore (A Numerical Approach) temperature distribution model which can be applied to any inclination angle for either single or two phase flow.A program on excel was low assurance is a critical and expensive task in .the oil and gas industry,especially when .
Temperature Distribution Model for Predicting the Precipitation of Wax in a Wellbore (A Numerical Approach) temperature distribution model which can be applied to any inclination angle for either single or two phase flow.A program on excel was low assurance is a critical and expensive task in .the oil and gas industry,especially when .Three-dimensional numerical simulation of vesicle dynamics May 22,2012·Three-dimensional numerical simulation using the front-tracking method is presented on the dynamics of a vesicle in a linear shear flow.The focus here is to elucidate the parametric dependence and the self-similarity of the vesicle dynamics,quantification of vesicle deformation,and the analysis of shape dynamics.A detailed comparison of the numerical results is made with various Water Free Full-Text Numerical Modelling and It will use numerical modelling and simulation to analyse the two-phase flow flushing method by FLUENT.The rest of the paper is organized as follows.Section 2 is the experiments.Section 3 is numerical modelling and simulation analysis.Finally,in Section 4,the paper is concluded.