Alexandre Kepler Soares

ORCID: 0000-0001-8845-9745
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About
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Research Areas
  • Water Systems and Optimization
  • Water resources management and optimization
  • Geotechnical Engineering and Underground Structures
  • Hydraulic flow and structures
  • Hydraulic and Pneumatic Systems
  • Water-Energy-Food Nexus Studies
  • Hydrology and Sediment Transport Processes
  • Urban Stormwater Management Solutions
  • Smart Parking Systems Research
  • Smart Grid Energy Management
  • High voltage insulation and dielectric phenomena
  • Hydrology and Watershed Management Studies
  • Irrigation Practices and Water Management
  • Advanced Multi-Objective Optimization Algorithms
  • Cavitation Phenomena in Pumps
  • Water Treatment and Disinfection
  • Geography and Environmental Studies
  • Rheology and Fluid Dynamics Studies
  • Retinal Imaging and Analysis
  • Hydrology and Drought Analysis
  • Retinal Diseases and Treatments
  • Fluid Dynamics Simulations and Interactions
  • Industrial Automation and Control Systems
  • Mathematical Control Systems and Analysis
  • Engine and Fuel Emissions

Universidade de Brasília
2020-2024

Universidade Federal de Itajubá
2021

Universidade Federal do Espírito Santo
2021

Federal Police of Brazil
2021

Universidade Federal de Goiás
2010-2017

Universidade de São Paulo
2008-2017

AECOM (China)
2017

Aecom (United Kingdom)
2017

University of Lisbon
2010-2012

Universidade Federal de Mato Grosso
2010

This research work focuses on the analysis of hydraulic transients in polyvinyl chloride (PVC) pipes, which are characterized by a viscoelastic rheological behavior. Transient pressure data were collected pipe rig consisting set PVC pipes. The creep function pipes was determined using an inverse transient model based and compared with that obtained carrying out mechanical tensile tests specimens. numerical results from solver have shown attenuation, dispersion, shape pressures well...

10.1061/(asce)0733-9429(2008)134:9(1389) article EN Journal of Hydraulic Engineering 2008-08-18

Leakage reduction in water supply systems and distribution networks has been an increasingly important issue the industry since leaks ruptures result major physical economic losses. Hydraulic transient solvers can be used system operational diagnosis, namely for leak detection purposes, due to their capability describe dynamic behaviour of provide substantial amounts data. In this research work, association hydraulic analysis with optimisation model, through inverse (ITA), its location...

10.2166/hydro.2010.012 article EN Journal of Hydroinformatics 2010-10-04

Abstract The research focuses on the analysis of transient cavitating flow in polyethylene pipes, which are characterized by a viscoelastic–rheological behaviour. A hydraulic solver incorporating description rheological–mechanical behaviour these pipes and pipe has been developed. Both discrete vapour cavity model gas have used to describe flow. These assume that air cavities formed at fixed sections consider constant wave speed reaches between cavities. An experimental programme was...

10.1080/00221686.2012.669143 article EN Journal of Hydraulic Research 2012-04-01

The current paper aims at the experimental and numerical analysis of cavitating pipe flow during occurrence hydraulic transients in a quasi-horizontal straight copper rig. Transient events were simulated by quasi-instantaneous closure pneumatically actuated ball valve located downstream end pipe. A transient model has been developed for describing means two approaches – discrete vapour cavity (DVCM) gas (DGCM). Firstly, calibrated using data without cavitation. Numerical results have...

10.1016/j.proeng.2015.08.881 article EN Procedia Engineering 2015-01-01

The current paper focuses on the analysis of transient cavitating flow in pressurised polyethylene pipes, which are characterized by viscoelastic rheological behaviour. A hydraulic solver that describes fluid transients plastic pipes has been developed. This incorporates description dynamic effects related to energy dissipation (unsteady friction), mechanical behaviour pipe and flow. Discrete Vapour Cavity Model (DVCM) Gas (DGCM) have used describe Such models assume discrete air cavities...

10.5293/ijfms.2009.2.4.269 article EN International Journal of Fluid Machinery and Systems 2009-12-01

This paper focuses on the analysis of unsteady pipe flows caused by a pump trip in water pipeline system. Field experiments have been carried out to collect transient pressure and steady-state flow rate data Prado–Instituto Politécnico da Guarda (IPG) pumping system located Guarda, Portugal. Observed pressures were compared with numerical results. Results obtained excellent both terms damping phase shift signal, provided that friction effects taken into account an appropriate downstream end...

10.1061/(asce)hy.1943-7900.0000663 article EN Journal of Hydraulic Engineering 2012-07-23

This research focuses on the analysis of transient cavitating flow in a horizontal copper pipe. Experiments have been conducted reservoir-pipe-valve pipe-rig to collect pressure data with and without cavitation. A hydraulic solver incorporating unsteady friction losses distributed cavitation (discrete gas cavity model) has developed. The system behaviour obtained signal compared experimental results for sloping pipes reported previous studies good agreement observed. Numerical are collected...

10.1080/00221686.2017.1286394 article EN Journal of Hydraulic Research 2017-02-22

RESUMO O estudo teve por objetivo a realização da calibração do modelo hidrológico Storm Water Management Model (SWMM) para Bacia Hidrográfica Arroio Cancela, localizada em Santa Maria, Rio Grande Sul, utilizando o algoritmo evolucionário multiobjetivo R-NSGA. Para tanto, foram realizadas modificações na estrutura SWMM, de modo que permitisse seu acoplamento como Evolucionary Reference Point Based Non-Dominated Sorting Genetic Algorithm (R-NSGA) ambiente programação MATLAB. As funções...

10.1590/s1413-41522016131862 article PT Engenharia Sanitaria e Ambiental 2016-12-01

O crescimento do contingente populacional das cidades requer o gerenciamento eficiente dos recursos hídricos, particularmente quando a exploração de novas fontes abastecimento mostra-se dispendiosa e os naturais cada vez mais escassos. Em contrapartida, em diversas brasileiras, são comuns redes distribuição água para com elevados índices perdas, sejam elas não-físicas ou físicas (perdas por vazamento). presente estudo visa avaliar as perdas vazamentos um setor da rede cidade Campo Grande-MS....

10.1590/s1413-41522004000400008 article PT Engenharia Sanitaria e Ambiental 2004-12-01

Este trabalho tem por objetivo efetuar a calibracao de um modelo hidrodinâmico para canais abertos utilizando algoritmos evolucionarios multiobjetivos partir medicoes nivel da agua. O metodo foi aplicado em canal urbano com revestimento lateral Gabiao e macrorrugosidades fundo. Por ser hidraulico poucos parâmetros, empregou-se apenas evento dos parâmetros do coeficiente rugosidade Manning, referentes aos trechos revestimentos macrorrugosidade concreto. Outros tres eventos foram usados...

10.14393/19834071.2016.33168 article EN Ciência & Engenharia 2016-02-28

Reservoir operation requires a series of decisions that defines the quantity water must be allocated over time for each one demands and which volumes should maintained in order to reach optimum predefined uses. In this context, aim study is identify potential Joao Leite reservoir, situated Goiânia, GO, via balance calculations performed by network flow model AcquaNet. The simulations show how much stored reservoir whether possible or not provide assessment other purposes besides both supply...

10.14393/19834071.2013.21049 article EN Ciência & Engenharia 2017-04-03

Research Article| February 18 2016 Uncertainties of inverse transient modelling with unsteady friction and pipe-wall viscoelasticity Nelson J. G. Carriço; Carriço 1Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, Lisboa 1049-001, Portugal Search for other works by this author on: This Site PubMed Google Scholar Alexandre K. Soares; Soares 2School Environmental Civil Engineering, Federal University Goiás, Esperança s/n, Goiânia 74690-900, Brazil E-mail:...

10.2166/aqua.2016.075 article EN Journal of Water Supply Research and Technology—AQUA 2016-02-18

RESUMO O uso de modelos hidrodinâmicos para a determinação das vazões em cursos d’água tem crescido nos últimos anos devido aos problemas relativos à utilização do método da curva-chave monitoramento vazões. Este trabalho por objetivo desenvolver um canais abertos utilizando algoritmos evolucionários multiobjetivos (NSGA-II) e medições nível superfície livre associadas modelo hidrodinâmico. Dados obtidos ensaios canal experimental laboratório foram utilizados calibração validação modelo....

10.1590/2318-0331.011616007 article PT cc-by RBRH 2016-11-12

ABSTRACT Protection devices can be used to protect a water transmission system in hydraulic transient state, such as the Air Chamber, which dampen both positive and negative pressure waves. This study proposes an optimal sizing of air chambers through genetic algorithms NSGA-II NSGA-III combined with valves pipeline. A real-life located Brasilia-Brazil was simulated analyzed. The results indicate effectiveness seeking solutions show influence guaranteeing safe minimum pressures...

10.1590/2318-0331.292420240012 article EN cc-by RBRH 2024-01-01

ABSTRACT The pursuit of efficient water distribution network (WDN) projects that reflect the complexities real systems has spurred development and application various optimization techniques. Among these, multi many-objective hold particular significance due to intrinsic interplay between variables within networks. Within this domain, evolutionary algorithms have emerged as a promising option, offering range methodologies documented in literature. To systematically evaluate these approaches,...

10.1590/2318-0331.292420240055 article EN cc-by RBRH 2024-01-01

Grande parte do consumo de energia elétrica dos sistemas abastecimento água é proveniente bombeamento, sendo que as companhias repassam esses gastos ao consumidor a fim equilibrar contas. Considerando-se importância eletricidade representa para o saneamento e quanto gastam com elétrica, verifica-se melhoria da eficiência beneficia todas partes envolvidas. Dessa forma necessário utilizar técnicas otimização, como modelagem matemática simuladores hidráulicos, aumentar reduzir perdas água. A...

10.5151/engpro-eneeamb2016-rh-015-4842 article PT cc-by 2016-10-01

RESUMO: Como a precipitação é um fator que afeta diretamente as estimativas de vazão, visou-se neste estudo, avaliar vazões resultantes da execução modelo chuva-vazão baseado em “tanques”, e denominado Tank Model, para duas séries históricas na Bacia Hidrográfica do Rio Manoel Alves Natividade, no Estado Tocantins. Os parâmetros foram determinados utilizando programação não-linear evolucionária intervalos temporais diferentes dados (diário mensal), fins comparação dos resultados. resultados...

10.5216/reec.v11i3.36007 article PT REEC - Revista Eletrônica de Engenharia Civil 2016-05-16

Bursting and leaks in network components water supply systems reduce the continuity regularity of service provision, addition to increasing losses besides operating maintenance costs. Therefore, an important approach is management infrastructure by understanding contributing factors occurrence bursting leaks. Consequently, decisions could be supported data contribute improving performance systems. Different approaches have been used predict distribution networks, such as statistical models,...

10.1061/9780784483466.093 article EN World Environmental and Water Resources Congress 2011 2021-06-03

RESUMO Em sistemas de distribuição água, economia energia elétrica pode ser alcançada pela substituição bombas rotação constante por variável (BRV). Os elevados custos instalação e operação BRV requerem uma avaliação econômica prévia do projeto, a qual geralmente é acompanhada uso simuladores para análises hidráulicas sistema. Um dos programas mais utilizados esse fim o EPANET 2, que impreciso computar eficiência BRV, pois programa não leva em conta mudança na curva da bomba quando sua...

10.1590/s1413-41522017163428 article PT Engenharia Sanitaria e Ambiental 2017-08-01

Residential water consumption data can be important for sizing and operation rules in a distribution network (WDN) if well compiled. This study aims to evaluate the impacts of smart metering program city Brasília, Brazil, by means comparisons between costs benefits obtained. Two groups were evaluated: (i) implementation costs, which obtained from public database Environmental Sanitation Company Brasília (Caesb) (ii) maintenance both interviews internal research with Caesb's managers. To...

10.3390/environsciproc2020002007 article EN cc-by 2020-08-09

RESUMO: Os índices de perdas em sistemas distribuição água encontram-se elevados, gerando impactos ambientais e econômicos ligados na maioria das vezes a um gerenciamento ineficaz por parte companhias saneamento. Este problema necessita da adoção soluções que resultem melhoria do funcionamento dos abastecimento serviços prestados estas empresas. Uma ferramentas podem ser utilizadas para tal fim é modelagem hidráulica redes abastecimento, seguida calibração modelo, pode gerar informações...

10.5216/reec.v10i1.33076 article PT REEC - Revista Eletrônica de Engenharia Civil 2015-07-25

A operação ótima de um sistema distribuição água consiste na determinação regras operacionais que forneçam a maior eficiência hidroenergética do sistema. Neste trabalho, foram estudados três objetivos considerados mais promissores para análise dessa eficiência, os quais são representados por funções objetivo: (i) minimização perdas vazamentos água, (ii) redução custo energia elétrica volume bombeado, e (iii) maximização da confiabilidade em atender aos padrões demanda. O modelo proposto foi...

10.5585/exactaep.v12n3.5193 article PT Exacta 2015-04-08
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