International Journal of Nonlinear Sciences and Numerical Simulation最新文献_第3页

Numerical Simulations and Research of Heat Transfer in Pneumatic Pulsator 气动脉动器传热数值模拟与研究

IF 1.5 4区工程技术

International Journal of Nonlinear Sciences and Numerical Simulation Pub Date : 2015-06-01 DOI: 10.1515/ijnsns-2014-0012

Jacek Wernik, K. Wołosz

{"title":"Numerical Simulations and Research of Heat Transfer in Pneumatic Pulsator","authors":"Jacek Wernik, K. Wołosz","doi":"10.1515/ijnsns-2014-0012","DOIUrl":"https://doi.org/10.1515/ijnsns-2014-0012","url":null,"abstract":"Abstract In loose material beds above silo outlets or in vertical channels immovable vaults can occur limiting or making impossible the downward movement of the loose material. To prevent vault creation or to destroy vault by aeration and separation of the loose material from encasing walls, a pneumatic pulsator can be applied. In order to optimize the head design, the flow phenomena were numerically simulated and the channels were preliminarily designed. The data obtained from simulation were also used as a basis for setting up an experimental stand to validate simulation results. During air flow in the channels due to frictional heat is produced, which is discharged from the pulsator to the environment. To increase the heat transfer in pneumatic pulsator, the external surfaces of channel are finned. Numerical simulations carried out conduction and convection heat transfer in the fins, and the results illustrated the temperature distribution on the surface of the body, the temperature distribution in the fins, stress distribution, value of factor of safety, the static displacement of the body and the distribution of air temperature along with the speed vectors. The results were compared with experimental and analytical results that confirm their correctness. The results confirm the rational design of the body in terms of thermal. The obtained temperature distribution using CFD agrees approximately with the values measured during the tests.","PeriodicalId":50304,"journal":{"name":"International Journal of Nonlinear Sciences and Numerical Simulation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ijnsns-2014-0012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66791054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Modelling and Optimization of CO2 Absorption in Pneumatic Contactors Using Artificial Neural Networks Developed with Clonal Selection-Based Algorithm 基于克隆选择算法的人工神经网络气动接触器CO2吸收建模与优化

IF 1.5 4区工程技术

International Journal of Nonlinear Sciences and Numerical Simulation Pub Date : 2015-04-01 DOI: 10.1515/ijnsns-2014-0052

P. Cozma, E. Drăgoi, I. Mămăligă, S. Curteanu, W. Wukovits, A. Friedl, M. Gavrilescu

{"title":"Modelling and Optimization of CO2 Absorption in Pneumatic Contactors Using Artificial Neural Networks Developed with Clonal Selection-Based Algorithm","authors":"P. Cozma, E. Drăgoi, I. Mămăligă, S. Curteanu, W. Wukovits, A. Friedl, M. Gavrilescu","doi":"10.1515/ijnsns-2014-0052","DOIUrl":"https://doi.org/10.1515/ijnsns-2014-0052","url":null,"abstract":"Abstract Our research focuses on the application of airlift contactors (ALRs) for the decontamination of CO2-containing gas streams, such as biogas. To assess the performance of ALRs during CO2 absorption, a complex experimental programme was applied in a laboratory-scale rectangular pneumatic contactor, able to operate either as a bubble column or as an airlift reactor. Using the experimental data, a model based on artificial neural network (ANN) was developed. The algorithm for determining the optimal neural network model and for reactor optimization is clonal selection (CS), belonging to artificial immune system class, which is a new computational intelligence paradigm based on the principles of the vertebrate immune system. To improve its capabilities and the probability for highly suitable models and input combinations, addressing maximum efficiency, a Back-Propagation (BK) algorithm – a supervised learning method based on the delta rule – is used as a local search procedure. It is applied in a greedy manner for the best antibody found in each generation. Since the highest affinity antibodies are cloned in the next generation, the effect of BK on the suitability of the individuals propagates into a large proportion of the population. In parallel with the BK hybridization of the basic CS–ANN combination, a series of normalization procedures are included for improving the overall results provided by the new algorithm called nCS-MBK (normalized Clonal Selection-Multilayer Perceptron Neural Network and Back-Propagation algorithm). The optimization allowed for achieving the optimal reactor configuration, which leads to a maximum amount of CO2 dissolved in water.","PeriodicalId":50304,"journal":{"name":"International Journal of Nonlinear Sciences and Numerical Simulation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2015-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ijnsns-2014-0052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66791262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Linear Generalized Synchronization Using Bidirectional Coupling 利用双向耦合的线性广义同步

IF 1.5 4区工程技术

International Journal of Nonlinear Sciences and Numerical Simulation Pub Date : 2015-04-01 DOI: 10.1515/ijnsns-2014-0027

Mauparna Nandan, Sourav K. Bhowmick, P. Pal

引用次数: 0

Modulation of Electron-Acoustic Waves in a Plasma with Vortex Electron Distribution 涡旋电子分布等离子体中电子声波的调制

IF 1.5 4区工程技术

International Journal of Nonlinear Sciences and Numerical Simulation Pub Date : 2015-04-01 DOI: 10.1515/ijnsns-2014-0017

H. Demiray

引用次数: 8

Dynamically Induced Magnetic Moment of a Magnetic Dipole System 磁偶极子系统的动态感应磁矩

IF 1.5 4区工程技术

International Journal of Nonlinear Sciences and Numerical Simulation Pub Date : 2015-02-01 DOI: 10.1515/ijnsns-2013-0129

A. M. Shutyĭ

引用次数: 0

A Short Remark on WAN Model for Electrospinning and Bubble Electrospinning and Its Development 浅谈静电纺丝和气泡静电纺丝的广域网模型及其发展

IF 1.5 4区工程技术

International Journal of Nonlinear Sciences and Numerical Simulation Pub Date : 2015-02-01 DOI: 10.1515/ijnsns-2014-0024

H. Liu, Ping Wang

引用次数: 6

Accuracy of Strain Solution of a Laminated Composite Plate via Galerkin's Method 用伽辽金法测定复合材料层合板应变解的精度

IF 1.5 4区工程技术

International Journal of Nonlinear Sciences and Numerical Simulation Pub Date : 2014-08-01 DOI: 10.1515/ijnsns-2013-0131

Z. Mecitoğlu, Zafer Kazancı, D. Balkan

{"title":"Accuracy of Strain Solution of a Laminated Composite Plate via Galerkin's Method","authors":"Z. Mecitoğlu, Zafer Kazancı, D. Balkan","doi":"10.1515/ijnsns-2013-0131","DOIUrl":"https://doi.org/10.1515/ijnsns-2013-0131","url":null,"abstract":"Abstract This paper deals with the detailed analysis and discussion of nonlinear static analysis of a laminated composite plate subjected to uniform pressure load. Governing equations of the plate are derived by the use of the virtual work principle. The geometric nonlinearity effects are taken into account with the von Kármán large deflection theory of thin plates. Approximate solutions for a simply supported plate are assumed for the plate domain. The single term approximation functions are selected by considering the nonlinear static deformations of plate. The solution is obtained using the Newmark method in MATLAB software. The plate is also modeled and analyzed using ANSYS software using SHELL91 elements. The variation of membrane, linear and nonlinear bending terms are obtained along a characteristic line on the plate and the numerical and finite element results are compared. The results are discussed in detail considering the nonlinear static behavior of the laminated composite plate and the main reasons of discrepancies are discussed. Dynamic behavior of the plate is explained considering the nonlinear static behavior.","PeriodicalId":50304,"journal":{"name":"International Journal of Nonlinear Sciences and Numerical Simulation","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/ijnsns-2013-0131","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66790840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multiscale Simulation of Wedge Nanoindentation Based on the Repulsive Force-field Approach 基于斥力场法的楔形纳米压痕多尺度模拟

IF 1.5 4区工程技术

International Journal of Nonlinear Sciences and Numerical Simulation Pub Date : 2014-08-01 DOI: 10.1515/ijnsns-2013-0117

Y. Li, Y. Ni

引用次数: 0

Modified Homotopy Perturbation Transform Method: A Paradigm for Nonlinear Boundary Layer Problems 修正同伦摄动变换方法:非线性边界层问题的一种范式

IF 1.5 4区工程技术

International Journal of Nonlinear Sciences and Numerical Simulation Pub Date : 2014-02-01 DOI: 10.1515/ijnsns-2011-0065

Y. Khan, M. Usman

引用次数: 15

Synchronization of Strictly Different Hyperchaotic Systems with Uncertain Parameters and Models 具有不确定参数和模型的严格不同超混沌系统的同步

IF 1.5 4区工程技术

International Journal of Nonlinear Sciences and Numerical Simulation Pub Date : 2014-01-21 DOI: 10.1515/ijnsns-2012-0028

G. Solís-Perales, G. Obregon-Pulido, G. Ruiz-Velázquez

引用次数: 0