1. 1 School of Engineering - Polytechnic of Porto, Rua Dr. António Bernardino de Almeida , Porto , Portugal
2. 2 Associate Laboratory for Energy, Transports and Aerospace (LAETA-INEGI) , Rua Dr. Roberto Frias 400, 4200-465 Porto , Portugal
3. 3 Instituto Politécnico de Viana do Castelo , Praça Gen. Barbosa 44 , Viana do Castelo , Portugal
4. 4 College of Science & Engineering , University of Galway, University Road , Galway , Ireland ,
5. 5 Production and Systems Department - University of Minho , Campus de Azurém, 4804 - 533 Guimarães , Portugal