检索结果-南通市图书馆

The optimal semi-analytical modeling for the infinite-conductivity horizontal well performance under rectangular bounded reservoir based on a new instantaneous source function

引用

Petroleum 2024年第1期10卷 68-84页

作者： Firas A.A.Al-Kabbawi Independent scholar Livingston Scotland UNITED KINGDOM

The main objective of this study is to develop the optimal semi-analytical modeling for the infiniteconductivity horizontal well performance under rectangular bounded reservoir based on a new instantaneous source function. The available semi-analytical infinite-conductivity models（ICMs） for horizontal well under rectangular bounded reservoir in literature were developed by applying superposition of pressures in space（SPS）. A new instantaneous source function（i.e., instantaneous uniform-flux segmentary source function under bounded reservoir） is derived to be used instead of SPS to develop the optimal semi-analytical *** new semi-analytical ICM is verified with ICM of Schlumberger [1] and with previous semi-analytical ICMs in terms of bottom hole pressure（BHP） profile and inflow rate distribution along the wellbore. The model is also validated with real horizontal wells in terms of inflow rate distribution along the wellbore. The results show that the developed model gives the optimal semi-analytical modeling for the infinite-conductivity horizontal well performance under rectangular bounded reservoir. Besides that, high computationalefficiency and high-resolution of wellbore discretization have been achieved（i.e., wellbore segment number could be tens of hundreds depending on solution requirement）. The results also show that at pseudosteady state（PSS） flow regime, inflow rate distribution along the wellbore by previous semi-analytical ICMs is stabilized U-shaped as performance of inflow rate distribution at late radial flow regime. Therefore, the previous semi-analytical ICMs are incorrectly modeling inflow rate distribution at PSS flow regime due to the negative influence of applying SPS. The optimal semi-analytical ICM is in a general form and real time domain,and can be applicable for 3D horizontal well and 2D vertical fracture well under infinite and rectangular bounded reservoirs, of uniform-flux and infinite-conductivity wellbore conditions at any time of

关键词： Infinite-conductivity model Horizontal well performance Semi-analytical modeling Rectangular bounded reservoir Instantaneous source functions flow regimes

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Extending homogeneous fluidization flow regime of Geldart-A particles by exerting axial uniform and steady magnetic field

引用

Chinese Journal of Chemical Engineering 2024年第1期65卷 169-177页

作者： Qiang Zhang Wankun Liu Hengjun Gai Quanhong Zhu College of Chemical Engineering Qingdao University of Science and TechnologyQingdao 266042China School of Chemical&Environmental Engineering China University of Mining&Technology-BeijingBeijing 100083China

The homogeneous/particulate fluidization flow regime is particularly suitable for handling the various gas–solid contact processes encountered in the chemical and energy *** work aimed to extend such a regime of Geldart-A particles by exerting the axial uniform and steady magnetic *** the action of the magnetic field,the overall homogeneous fluidization regime of Geldart-A magnetizable particles became composed of two parts:inherent homogeneous fluidization and newly-created magnetic *** the former remained almost unchanged whereas the latter became broader as the magnetic field intensity increased,the overall homogeneous fluidization regime could be extended *** for Geldart-A nonmagnetizable particles,certain amount of magnetizable particles had to be premixed to transmit the magnetic *** others,the mere addition of magnetizable particles could broaden the homogeneous fluidization *** added content of magnetizable particles had an optimal value with smaller/lighter ones working *** added magnetizable particles might raise the ratio between the interparticle force and the particle *** the magnetic field was exerted,the homogeneous fluidization regime was further expanded due to the formation of magnetic stabilization flow *** more the added magnetizable particles,the better the magnetic performance and the broader the overall homogeneous fluidization ***/lighter magnetizable particles were preferred to maximize the magnetic performance and extend the overall homogeneous fluidization *** phenomenon could be ascribed to that the added magnetizable particles themselves became more Geldart-A than-B type as their density or size decreased.

关键词： Fluidized-bed Fluidization Geldart-A particles flow regimes Extend Magnetic stabilization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Influence of artificial tip perturbation on asymmetric vortices flow over a chined fuselage

引用

Chinese Journal of Aeronautics 2015年第4期28卷 1016-1022页

作者： Shi Wei Deng Xueying Tian Wei Wang Yankui Ministry-of-Education Key Laboratory of Fluid Mechanics Beihang University

An experimental study was conducted with the aim of understanding behavior of asymmetric vortices flow over a chined *** tests were carried out in a wind tunnel at Reynolds number of 1.87 · 105 under the conditions of high angles of attack and zero angle of *** results show that leeward vortices flow becomes asymmetric vortices flow when angle of attack increases over *** asymmetric vortices flow is asymmetry of two forebody vortices owing to the increase of angle of attack but not asymmetry of vortex breakdown which appears when angle of attack is above *** vortices flow is sensitive to tip perturbation and is nondeterministic due to randomly distributed natural minute geometrical irregularities on the nose tip within machining *** asymmetric vortices flow can be obtained by attaching artificial tip perturbation which can trigger asymmetric vortices flow and decide asymmetric vortices flow *** by artificial tip perturbation, the vortex on the same side with perturbation is in a higher position, and the other vortex on the opposite side is in a lower *** suction on the lower vortex side is larger, which corresponds to a side force pointing to the lower vortex side.

关键词： Asymmetric vortices flowChined fuselage Tip perturbation High angle of attack flow regimes

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Experimental investigation of particle-induced pressure loss in solid–liquid lifting pipe

引用

Journal of Central South University 2017年第9期24卷 2114-2120页

作者：宋跃文朱小军孙志强唐达生 School of Energy Science and Engineering Central South University State Key Laboratory of the Exploration and Utilization of Deep-sea Mineral Resources(Changsha Research Institute of Mining and Metallurgy Co.Ltd.)

In order to investigate the characteristics of particle-induced pressure loss in the solid–liquid lifting pipe,a series of experiments were conducted in 200 mm diameter lifting *** manganese nodules with five different mean diameters of10 mm,20 mm,30 mm,40 mm and 50 mm were used,both in isolation and a combination in equal fraction by *** flow velocities in the lifting pipe ranged from 0.12 m/s to 1.61 m/s,and the mass of particles employed was 10 kg for each particle *** regimes,wavy bed,partly fluidization,and fully fluidization,were observed over the flow *** solid–liquid pressure drop data were measured by differential pressure transmitter,and pressure drop caused by the solid particles was calculated and *** results show that the evolutions of the pressure loss due to solid particles are relevant to the solid–liquid flow regimes,and they are distinctly influenced by fluid velocity and particle size.

关键词： lifting pipe pressure loss simulation manganese nodules flow regimes

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Experimental and numerical study on improvement performance by wave parallel flow field in a proton exchange membrane fuel cell

引用

Chinese Journal of Chemical Engineering 2022年第5期35卷 90-102页

作者： Zijun Li Shubo Wang Sai Yao Xueke Wang Weiwei Li Tong Zhu Xiaofeng Xie School of Mechanical Engineering and Automation Northeastern UniversityShenyang 110819China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China Beijing Institute of Space Launch Technology Beijing 100076China

The performance and operation stability of proton exchange membrane fuel cells(PEMFCs)are closely related to the transportation of reactants and water management in the membrane electrode assembly(MEA)and flow *** this paper,a new three-dimensional wave parallel flow field(WPFF)in cathode was designed and analyzed throughout simulation studies and an experimental *** experimental results show that the performance of PEMFC with WPFF outperforms that of PEMFC with straight parallel flow field(SPFF).Specifically,the peak power density increased by 13.45%for the PEMFC with WPFF as opposed to PEMFC with *** addition,the flow field with area of 11.56 cm^(2) was formed by the assembly of transparent end plate used for cathode and the traditional graphite plate used for *** understand the mechanism of the novel flow field improving the performance of PEMFC,a model of PEMFC was proposed based on the geometry,operating conditions and MEA *** thickness of gas diffusion layers(GDL),catalytic layers(CL)and proton exchange membrane were measured by scanning electron *** simulation result shows that compared with SPFF,the WPFF based PEMFC promote the oxygen transfer from flow channel to the surface of CL through GDL,and it was beneficial to remove the liquid water in the flow channel and the MEA.

关键词： Fuel cells Transport process Computational fluid dynamics flow regimes Water management

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Exploration on the stability conditions in bubble columns by noncooperative game theory

引用

Chinese Journal of Chemical Engineering 2022年第10期50卷 75-84页

作者： Jiachen Liu Xiaoping Guan Ning Yang State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China

The energy-minimization multiscale(EMMS)model,originally proposed for gas-solid fluidization,features a stability condition to close the simplified conservation *** was put forward to physically reflect the compromise of two dominant mechanisms,i.e.,the particle-dominated with minimal potential energy of particles,and the gas-dominated with the least resistance for gas to penetrate through the particle *** stability condition was then formulated as the minimization of the ratio of these two physical ***,the EMMS approach was later extended to the gas-liquid flow in bubble columns,termed dual-bubble-size *** considers the compromise of two dominant mechanisms,i.e.,the liquid-dominated regime with small bubbles,and the gas-dominated regime with large *** stability condition was then formulated as the minimization of the sum of these two physical ***,the two stability conditions were expressed in different manner,though gas-solid and gas-liquid systems bear some *** addition,both the conditions transform the original multiobjective variational problem into a single-objective *** mathematical formulation of stability condition remains therefore an open *** study utilizes noncooperative game theory and noninferior solutions to directly solve the multi-objective variational problem,aiming to explo re the different pathways of compromise of dominant *** results show that only keeping the single dominant mechanism cannot capture the jump change of gas holdup,which is associated with flow regime *** of dominant mechanisms,noninferior solutions and noncooperative game theory can predict the flow regime ***,the game between the two mechanisms makes the two-bubble structure degenerate and reduce to the single-bubble *** game of the three mechanisms restores the two-bubble *** exploration on the formulation of stability conditions may

关键词： Bubble column flow regimes Mesoscale Noncooperative gametheory

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A lattice Boltzmann exploration of two-phase displacement in 2D porous media under various pressure boundary conditions

引用

Journal of Rock Mechanics and Geotechnical Engineering 2022年第6期14卷 1782-1798页

作者： Guanxi Yan Zi Li Thierry Bore Sergio Andres Galindo Torres Alexander Scheuermann Ling Li School of Civil Engineering University of QueenslandSt LuciaBrisbaneQLD4072Australia School of Engineering Westlake UniversityHangzhou310024China Institute of Advanced Technology Westlake Institute for Advanced StudyHangzhou310024China

While experimental designs developed in recent decades have contributed to research on dynamic nonequilibrium effects in transient two-phase flow in porous media,this problem has been seldom investigated using direct numerical simulation(DNS).Only a few studies have sought to numerically solve Navier—Stokes equations with level-set(LS)or volume-of-fluid(VoF)methods,each of which has constraints in terms of meniscus dynamics for various flow velocities in the control volume(CV)*** Shan—Chen multiphase multicomponent lattice Boltzmann method(SC-LBM)has a fundamental mechanism to separate immiscible fluid phases in the density domain without these ***,this study applied it to explore two-phase displacement in a single representative elementary volume(REV)of two-dimensional(2D)porous *** a continuation of a previous investigation into one-step inflow/outflow in 2D porous media,this work seeks to identify dynamic nonequilibrium effects on capillary pressure—saturation relationship(P_(c)—S)for quasi-steady-state flow and multistep inflow/outflow under various pressure boundary *** simulation outcomes show that P_(c),S and specific interfacial area(a_(nw))had multistep-wise dynamic effects corresponding to the multistep-wise pressure boundary *** finer adjustments to the increase in pressure over more steps,dynamic nonequilibrium effects were significantly alleviated and even finally disappeared to achieve quasisteady-state inflow/outflow ***,triangular wave-formed pressure boundary conditions were applied in different periods to investigate dynamic nonequilibrium effects for hysteretical Pc—*** results showed overshoot and undershoot of P_(c)to S in loops of the nonequilibrium *** addition,the flow regimes of multistep-wise dynamic effects were analyzed in terms of Reynolds and capillary numbers(Re and Ca).The analysis of REV-scale flow regimes showed higher Re(1

关键词： Two-phase flow Porous media Dynamic effects Multistep in/outflow Capillary pressure Interfacial area flow regimes

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Limitations of Lattice Boltzmann Modeling of Micro-flows in Complex Nanopores

引用

Acta Geologica Sinica(English Edition) 2019年第6期93卷 1808-1822页

作者： ZUO Hong DENG Shouchun LI Haibo State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan 430071China University of Chinese Academy of Sciences Beijing 100094China

The multiscale transport mechanism of methane in unconventional reservoirs is dominated by slip and transition flows resulting from the ultra-low permeability of micro/nano-scale pores,which requires consideration of the microscale and rarefaction *** continuum-based computational fluid dynamics(CFD)becomes problematic when modeling micro-gaseous flow in these multiscale pore networks because of its disadvantages in the treatment of cases with a complicated *** an alternative,the lattice Boltzmann method(LBM),a special discrete form of the Boltzmann equation,has been widely applied to model the multi-scale and multi-mechanism flows in unconventional reservoirs,considering its mesoscopic nature and advantages in simulating gas flows in complex porous ***,numerous LBM models and slip boundary schemes have been proposed and reported in the *** study investigates the predominately reported LBM models and kinetic boundary *** results of these LBM models systematically compare to existing experimental results,analytical solutions of Navier-Stokes,solutions of the Boltzmann equation,direct simulation of Monte Carlo(DSMC)and information-preservation DSMC(IP_DSMC)results,as well as the numerical results of the linearized Boltzmann equation by the discrete velocity method(DVM).The results point out the challenges and limitations of existing multiple-relaxation-times LBM models in predicting micro-gaseous flow in unconventional reservoirs.

关键词： LBM DVM micro-gaseous flow slip boundary schemes effective viscosity flow regimes

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Design and Characterization of a Horizontal Double Impinging Jet Cell: Determination of flow Modes at the Surface of a Flat Electrode

引用

Journal of Materials Science and Chemical Engineering 2016年第8期4卷 18-28页

作者： Désiré M. K. Abro Pierre Dable Fernando Cortez-Salazar Véronique Amstutz Edith Kouassi Kwa-Koffi Hubert Girault Laboratoire de Chimie Physique Université Félix Houphouet-Boigny Abidjan C?te d’Ivoire Laboratoire de Thermodynamique de Traitement et Sciences des Surfaces et Interfaces Institut National Polytechnique Félix Houphouet-Boigny Yamoussoukro C?te d’ivoire Laboratoire d’Electrochimie Physique et Analytique Ecole Polytechnique Fédérale de Lausanne Sion Suisse

An electrochemical cell consisting of a double horizontal Impinging Jet Cell (IJC) has been conceived and characterized. The purpose of this system is the simultaneous electrodeposition of a composite metal/particle coating on both surfaces of a metal sheet. The silica particles imprint in the nickel matrix has allowed to distinguish four different flow areas onto the electrode namely the stagnation area, the radial flow area characterized by a higher flow speed, the return flow area that involves gravity effect, and the drainage area with a constant draining speed. Based on the limiting current evolution as a function of the Reynolds number, three flow modes were extracted: the Laminar Low flow (LLF), the Laminar High flow (LHF) and the Disturbance. The IJC investigated ensures a laminar flow for a large range of flow rate from a nozzle-to-sample distance of 19 mm and creates an laminar flow ovoid plan merged with the sample for the high flows.

关键词： Impinging Jet Cell Hydrodynamic flow regimes Electrocodeposition

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：