Applied and Computational Mechanics最新文献_第9页

Investigation on the effect of metal foam properties on the PCM melting performance subjected to various heat fluxes 不同热通量下泡沫金属性能对PCM熔融性能影响的研究

Applied and Computational Mechanics Pub Date : 2021-06-01 DOI: 10.22059/JCAMECH.2019.273552.354

A. Noghrehabadi, Amin Samimi Behbahan, C. Wong, M. Behbahani-Nejad

引用次数: 6

Direct Normal Form Analysis of Oscillators with Different Combinations of Geometric Nonlinear Stiffness Terms 具有不同几何非线性刚度项组合的振子的直接正态分析

Applied and Computational Mechanics Pub Date : 2021-06-01 DOI: 10.22055/JACM.2021.34016.2324

Ayman Nasir, N. Sims, D. Wagg

{"title":"Direct Normal Form Analysis of Oscillators with Different Combinations of Geometric Nonlinear Stiffness Terms","authors":"Ayman Nasir, N. Sims, D. Wagg","doi":"10.22055/JACM.2021.34016.2324","DOIUrl":"https://doi.org/10.22055/JACM.2021.34016.2324","url":null,"abstract":"Nonlinear oscillators with geometric stiffness terms can be used to model a range of structural elements such as cables, beams and plates. In particular, single-degree-of-freedom (SDOF) systems are commonly studied in the literature by means of different approximate analytical methods. In this work, an analytical study of nonlinear oscillators with different combinations of geometric polynomial stiffness nonlinearities is presented. To do this, the method of direct normal forms (DNF) is applied symbolically using Maple software. Closed form (approximate) expressions of the corresponding frequency-amplitude relationships (or backbone curves) are obtained for both e and e2 expansions, and a general pattern for e truncation is presented in the case of odd nonlinear terms. This is extended to a system of two degrees-of-freedom, where linear and nonlinear cubic and quintic coupling terms exist. Considering the non-resonant case, an example is shown to demonstrate how the single mode backbone curves of the two degree-of-freedom system can be computed in an analogous manner to the approach used for the SDOF analysis. Numerical verifications are also presented using COCO numerical continuation toolbox in Matlab for the SDOF examples.","PeriodicalId":37801,"journal":{"name":"Applied and Computational Mechanics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48633433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

VIV Control Strategies Using Displacement-Based Phenomenological Model 基于位移现象学模型的VIV控制策略

Applied and Computational Mechanics Pub Date : 2021-06-01 DOI: 10.22055/JACM.2021.32635.2050

M. Hajj, Asrhad Mehmood, I. Akhtar, K. Billah

引用次数: 0

Theoretical Study on Poiseuille Flow of Herschel-Bulkley Fluid in Porous Media 多孔介质中Herschel-Bulkley流体泊泽维尔流动的理论研究

Applied and Computational Mechanics Pub Date : 2021-05-30 DOI: 10.22055/JACM.2021.36921.2928

D. Sankar, K. Viswanathan, A. Nagar, N. A. Jaafar, A. Kumar

{"title":"Theoretical Study on Poiseuille Flow of Herschel-Bulkley Fluid in Porous Media","authors":"D. Sankar, K. Viswanathan, A. Nagar, N. A. Jaafar, A. Kumar","doi":"10.22055/JACM.2021.36921.2928","DOIUrl":"https://doi.org/10.22055/JACM.2021.36921.2928","url":null,"abstract":"This theoretical study analyses the effects of geometrical and fluid parameters on the flow metrices in the Hagen-Poiseuille and plane-Poiseuille flows of Herschel-Bulkley fluid through porous medium which is considered as (i) single pipe/single channel and (ii) multi–pipes/multi-channels when the distribution of pores size in the flow medium are represented by each one of the four probability density functions: (i) Uniform distribution, (ii) Linear distribution of Type-I, (iii) Linear distribution of Type-II and (iv) Quadratic distribution. It is found that in Hagen-Poiseuille and plane-Poiseuille flows, Buckingham-Reiner function increases linearly when the pressure gradient increases in the range 1 - 2.5 and then it ascends slowly with the raise of pressure gradient in the range 2.5 - 5. In all of the four kinds of pores size distribution, the fluid’s mean velocity, flow medium’s porosity and permeability are substantially higher in Hagen-Poiseuille fluid rheology than in plane-Poiseuille fluid rheology and, these flow quantities ascend considerably with the raise of pipe radius/channel width and a reverse characteristic is noted for these rheological measures when the power law index parameter increases. The flow medium’s porosity decreases rapidly when the period of the pipes/channels distribution rises from 1 to 2 and it drops very slowly when the period of the pipes/channels rises from 2 to 11.","PeriodicalId":37801,"journal":{"name":"Applied and Computational Mechanics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41616343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Performance Investigation of Simple Low-dissipation AUSM (SLAU) Scheme in Modeling of 2-D Inviscid Flow in Steam Turbine Cascade Blades 简单低耗散AUSM (SLAU)方案在汽轮机叶栅二维无粘流动建模中的性能研究

Applied and Computational Mechanics Pub Date : 2021-05-10 DOI: 10.22055/JACM.2021.36513.2857

F. E. Azghadi, M. Pasandidehfard, M. R. Mahpeykar

引用次数: 1

Alternative Integration Approaches in the Weight Function Method for Crack Problems 裂纹问题权函数法的可选积分方法

Applied and Computational Mechanics Pub Date : 2021-05-09 DOI: 10.22055/JACM.2021.37137.2968

M. Eder, Xiao Chen

引用次数: 1

Review of Enhanced Oil Recovery Decision Making in Complex Carbonate Reservoirs: Fluid Flow and Geomechanics Mechanisms 复杂碳酸盐岩油藏提高采收率决策研究综述：流体流动与地质力学机制

Applied and Computational Mechanics Pub Date : 2021-05-08 DOI: 10.22059/JCAMECH.2021.318511.596

Seydeh Hosna Talebian, A. Fahimifar, A. Heidari

{"title":"Review of Enhanced Oil Recovery Decision Making in Complex Carbonate Reservoirs: Fluid Flow and Geomechanics Mechanisms","authors":"Seydeh Hosna Talebian, A. Fahimifar, A. Heidari","doi":"10.22059/JCAMECH.2021.318511.596","DOIUrl":"https://doi.org/10.22059/JCAMECH.2021.318511.596","url":null,"abstract":"As a result of reduction trend in exploration of super-giant carbonate fields and depletion of the proven mature fields categorized as easy oil, development of tight, deep carbonates with more complexities in reservoir rock and fluid behavior have become of interest for exploration and development companies in recent years. New challenges have arisen in development of complex carbonates due to fracture network distribution uncertainty, lateral and vertical fluid behavior heterogeneities, unstable asphaltene content, high H2S and CO2 contents and high salinity formation brine. The complexity elements and problems for downhole sampling have made the full understanding of the reservoir behavior and consequently availability of data for further routine analysis and utilization of simulation model as the main way of data integration limited. Therefore, there is an emerging need to better understand the challenges surrounding production and enhanced oil recovery strategies in these reservoirs for an improved oil recovery decision making system. In this paper, the challenges in production, stimulation and enhanced oil recovery strategies in newly-developed complex carbonates are addressed and analyzed based on the changes to the chemical and mechanical environment. An integrated decision-making workflow based on coupled hydro-mechanical mechanisms in water-based EOR methods is discussed.","PeriodicalId":37801,"journal":{"name":"Applied and Computational Mechanics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46361288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A Novel Flexible Lane Changing (FLC) Method in Complicated Dynamic Environment for Automated Vehicles 一种复杂动态环境下自动驾驶车辆柔性变道方法

Applied and Computational Mechanics Pub Date : 2021-04-25 DOI: 10.22055/JACM.2021.36276.2818

M. Rafat, S. Azadi

引用次数: 1

Stress Mode Superposition for a Priori Detection of Highly Stressed Areas: Mode Normalisation and Loading Influence 高应力区域优先检测的应力模式叠加：模式归一化和加载影响

Applied and Computational Mechanics Pub Date : 2021-04-12 DOI: 10.22055/JACM.2021.36637.2878

Carsten Strzalka, D. Marinković, M. Zehn

引用次数: 4

Potential of Semi-Empirical Heat Transfer Models in Predicting the Effects of Equivalence Ratio on Low Temperature Reaction and High Temperature Reaction Heat Release of an HCCI Engine 半经验传热模型预测等效比对HCCI发动机低温和高温反应放热影响的潜力

Applied and Computational Mechanics Pub Date : 2021-04-03 DOI: 10.22055/JACM.2020.35398.2649

M. Rabeti, O. Jahanian, A. Ranjbar, S. M. S. Ardebili, H. Solmaz

引用次数: 3