Mathematical Modelling in Civil Engineering最新文献_第8页

R Language: Statistical Computing and Graphics for Modeling Hydrologic Time Series R语言:水文时间序列建模的统计计算和图形

Mathematical Modelling in Civil Engineering Pub Date : 2014-12-01 DOI: 10.2478/mmce-2014-0018

G. Dobre

引用次数: 2

Update of the P100-1 Concrete Provisions P100-1具体规定的更新

Mathematical Modelling in Civil Engineering Pub Date : 2014-09-01 DOI: 10.2478/mmce-2014-0014

V. Popa

引用次数: 1

Determination of Wheel-Rail Contact Characteristics by Creating a Special Program for Calculation 通过创建一个特殊的计算程序来确定轮轨接触特性

Mathematical Modelling in Civil Engineering Pub Date : 2014-09-01 DOI: 10.2478/mmce-2014-0015

I. Sebeşan, Yahia A. Zakaria

引用次数: 7

Thermal Comfort Analyses in Naturally Ventilated Buildings 自然通风建筑的热舒适性分析

Mathematical Modelling in Civil Engineering Pub Date : 2014-09-01 DOI: 10.2478/mmce-2014-0016

I. Udrea, C. Croitoru, I. Năstase, A. Dogeanu, V. Badescu

引用次数: 3

Simulation of Two High Pressure Distribution Network Operation in one-Network Connection 双高压配网单网连接运行仿真

Mathematical Modelling in Civil Engineering Pub Date : 2014-09-01 DOI: 10.2478/mmce-2014-0013

S. Perju, M. Mihailovici, I. Stănescu

引用次数: 2

Influence of Dynamic Analysis Methods on Seismic Response of a Buttress Dam 动力分析方法对扶垛坝地震反应的影响

Mathematical Modelling in Civil Engineering Pub Date : 2014-09-01 DOI: 10.2478/mmce-2014-0012

Cornel Ilinca, Răzvan Vârvorea, A. Popovici

引用次数: 5

High Stability and Low Emissions Burners Using Karlowitz Effect in Conical Burners 利用卡罗维茨效应的高稳定低排放燃烧器

Mathematical Modelling in Civil Engineering Pub Date : 2014-09-01 DOI: 10.2478/mmce-2014-0011

N. Antonescu, Paul-Dan Stănescu

{"title":"High Stability and Low Emissions Burners Using Karlowitz Effect in Conical Burners","authors":"N. Antonescu, Paul-Dan Stănescu","doi":"10.2478/mmce-2014-0011","DOIUrl":"https://doi.org/10.2478/mmce-2014-0011","url":null,"abstract":"Abstract The conical tunnel burner is an improvement of the cylindrical tunnel burner because, by maintaining all its advantages by means of burning intensification, it may also insure the flame stabilization in a wide range of regulation with considerable diminished pressure losses. Technical applications for the conical furnace burner can vary due to the limited dimensions required by the system, as well as the important thermal loads, and also because of the burning stability characteristic that spreads over an important range of regulation. The low costs required by the burner, generated mainly by its simple construction, also raise the interest for this technical solution. A physical model is proposed for the ignition and flame front stabilization. The flame front stabilization contains different steps from the ignition moment to final flame front stabilization, with specific flame front geometries and specific locations along the burner axis. The installation realised by the authors allowed the experimental study of the burning process in conical furnaces, in order to determine the temperature fields and the flame profiles. The physical model developed for this new type of application and the experimental data sets obtained (along with their interpretation) make the subject of this paper.","PeriodicalId":233081,"journal":{"name":"Mathematical Modelling in Civil Engineering","volume":"374 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113986615","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

Mathematical Modelling of a Hybrid Micro-Cogeneration Group Based on a Four Stroke Diesel Engine 基于四冲程柴油机的混合微型热电联产机组数学建模

Mathematical Modelling in Civil Engineering Pub Date : 2014-06-01 DOI: 10.2478/mmce-2014-0010

V. Apostol, T. Prisecaru, C. Petcu, A. Dobrovicescu, M. Prisecaru, G. Popescu, H. Pop, C. Ciobanu, E. Pop, Adrian Untea, Mahdi Hatf Kadhum, V. Badescu

引用次数: 0

Mathematical Determination of Thermal Load for Fluidised Bed Furnaces Using Sawdust 木屑流化床炉热负荷的数学确定

Mathematical Modelling in Civil Engineering Pub Date : 2014-06-01 DOI: 10.2478/mmce-2014-0006

N. Antonescu, Paul-Dan Stănescu

{"title":"Mathematical Determination of Thermal Load for Fluidised Bed Furnaces Using Sawdust","authors":"N. Antonescu, Paul-Dan Stănescu","doi":"10.2478/mmce-2014-0006","DOIUrl":"https://doi.org/10.2478/mmce-2014-0006","url":null,"abstract":"Abstract For technical applications, a physical model capable of predicting the particle evolution in the burning process along its trajectory through the furnace is very useful. There are two major demands: all the thermo-dynamic processes that describe the particle burning process must be accounted and the model must be written in such equation terms to allow the intervention for parameter settings and particle definition. The computations were performed for the following parameters: furnace average temperature between 700 and 1200 °C, size of the sawdust particle from 4 to 6 mm and fix carbon ignition between 500 and 900 °C. The values obtained for the characteristic parameters of the burning process ranged from 30 to 60 [kg/(h·m3)] for the gravimetrical burning speed WGh and from 150 to 280 [kW/m3] for the volumetric thermal load of the furnace QV. The main conclusion was that the calculus results are in good agreement with the experimental data from the pilot installations and the real-case measurements in the sawdust working boiler furnaces or pre-burning chambers. Another very important conclusion is that the process speed variation, when the furnace temperature changes, confirms the thermo-kinetic predictions, namely that the burning process speed decreases when the furnace temperature increases.","PeriodicalId":233081,"journal":{"name":"Mathematical Modelling in Civil Engineering","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123767233","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

Water Quality Improvement Using Renewable Energies 利用可再生能源改善水质

Mathematical Modelling in Civil Engineering Pub Date : 2014-06-01 DOI: 10.2478/mmce-2014-0009

C. Mocanu, L. Balanescu

{"title":"Water Quality Improvement Using Renewable Energies","authors":"C. Mocanu, L. Balanescu","doi":"10.2478/mmce-2014-0009","DOIUrl":"https://doi.org/10.2478/mmce-2014-0009","url":null,"abstract":"Abstract To reduce the negative effects of eutrophication processes in water bodies it is necessary to improve water quality by ensuring the necessary oxygen concentration. The paper proposes a new innovative solution for the improvement of lake water quality. The premises for the implementation of the experimental floating platform which will aerate the lake waters will be presented. To give a specific view over the oxygen dispersion into the lake, numerical simulations in CFD software will be presented in different cases. The protection of drinking water resources against pollution is a common task of outstanding importance for the water management and environment protection sectors. To prevent water supply problems arising from the short and medium-term quality deterioration of resources caused by pollution incidents, it is vital to develop methods for monitoring the quality of resources as well as methods for monitoring and predicting serious pollution events to protect water users. In the case of vulnerable drinking water resources, the establishment and maintenance of an early warning monitoring system is important. Emergency treatment technologies are also needed by the waterworks to treat the water for periods when the quality of the water has temporarily deteriorated. Innovative solutions for the improvement of water quality consist in using a floating platform equipped with aeration systems. The equipment used to aerate the lake waters is powered by the area renewable energy (solar, wind). So, this platform can be used in isolated area, where there is no energy supply from the national network.","PeriodicalId":233081,"journal":{"name":"Mathematical Modelling in Civil Engineering","volume":"48 5 Suppl 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128207551","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