Seminário de Investigação Operacional

Mixed-Integer Linear Programming Models for the Scheduling of Multiproduct Pipeline Systems

Sala 6.4.30, FCUL, Lisboa

Por Qi Liao (Visiting PhD student from China University of Petroleum, Beijing, China, just finishing a 1-year visit to CMAFcIO; advisor: Pedro Castro).

Abstract: Pipelines are the safest and least expensive way for the long-distance transportation of various refined products. For a given pipeline system, the quality of the schedule reflects the level of management and facility utilization, strongly affecting its profit as well as its safety. However, the optimization of multiproduct pipeline systems is a very complex task with many different types of constraints (supply and demand, topological structures, transport operations, equipment, contamination, etc.) to be considered. It may be challenging to find the optimal schedule or even a feasible schedule that meets all the operation constraints. To address such big challenges facing the pipeline company, this presentation introduces three computationally efficient MILP models for the detailed scheduling of multiproduct pipeline systems, ranging from straight pipelines to branched networks to mesh networks. The main novelty of our work is to allow multiple injections/deliveries during a slot while keeping the models linear and accurate. It helps to reduce the required number of slots and improve computational performance significantly. Twelve benchmark problems from the literature involving different pipeline configurations are solved to show our superiority in solution quality and computational time.

16h00
CMAFcIO - Centro de Matemática, Aplicações Fundamentais e Investigação Operacional

Speaker: Andrei Sipos (TU Darmstadt & Institute of Mathematics of the Romanian Academy).

Face à emergência da pandemia da COVID-19, a 6.ª edição da Escola de Verão de Energia da Faculdade de Ciências da ULisboa, prevista para 6 a 10 de julho de 2020, será adiada para data a definir em 2021.

CoastNet - Rede Portuguesa de Monitorização Costeira é uma infraestrutura de investigação MARE, que faz parte do Roteiro Nacional de Infraestruturas de Investigação de Interesse Estratégico (RNIE-FCT). Através do seu funcionamento est

Speaker: Elvira Zappale (Università Degli Studi di Salerno).

Cancelamento motivado pela aplicação do plano de contingência da Faculdade de Ciências da Universidade de Lisboa, na sequência das orientações da Direção-Geral de Saúde e das recomendações por parte da Reitoria da Universidade de Lisboa, relativamente ao novo Coronavírus (CO

Apresentações de Andreia Figueiredo (Ciências ULisboa) e Paula Silva (ICBAS.UPorto / Science & Wine).

Candidaturas a decorrer até ao dia 15 de julho de 2020.

IN3+  | Um Milhão para a Inovação.

O prémio IN3+ destina-se a todos os investigadores pertencentes às entidades que integram a Rede Inovação INCM.

Cancelamento motivado pela aplicação do plano de contingência da Faculdade de Ciências da Universidade de Lisboa, na sequência das orientações da Direção-Geral de Saúde e das recomendações por parte da Reitoria da Universidade de Lisboa, relativamente ao novo Coronavírus (COVID-1

Speaker: Gonçalo Tabuada (FCTUNL).

New date: September 14th-16th, 2020.

Ciências ULisboa associa-se ao maior evento mundial sobre inovação para a sustentabilidade - “The Planetiers World Gathering” - que terá lugar no Altice Arena entre 21 e 23 de outubro de 2020, sob os auspícios da

Programa de Formação Contínua de Professores do Ensino Básico (3.º ciclo) e Secundário, grupos 420 e 520.

Leitura e escrita são a base fundacional de todas as literacias e a condição primeira para o juízo compreensivo e crítico, o enriquecimento cultural, a formação estética e a memória individual e coletiva das sociedades.

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This conference is the 22nd in the series of triennial conferences which bring together the Particle and Nuclear Physics communities.