- document
-
Cutz, L. (author), Tiringer, U. (author), Gilvari, H. (author), Schott, D.L. (author), Mol, J.M.C. (author), de Jong, W. (author)The use of biomass pellets as a source of renewable energy has increased in recent times. However, pellet storage during transportation can compromise their properties, due to fluctuating temperature and humid environments. Here, we show that extended storage of one month at 40 °C and 85% relative humidity causes significant biomass pellet...journal article 2021
- document
-
Pachón-Morales, John (author), Perré, Patrick (author), Casalinho, Joel (author), Do, H.Q. (author), Schott, D.L. (author), Puel, François (author), Colin, Julien (author)The evaluation of the flow properties of biomass powders is essential for the design of handling systems within a thermochemical valorization context. The Discrete Element Method (DEM) is a valuable tool for simulating the bulk behavior of granular materials that has rarely been used for biomass feedstocks. This work focuses on the numerical...journal article 2020
- document
-
Gilvari, H. (author), Cutz, L. (author), Tiringer, U. (author), Mol, J.M.C. (author), de Jong, W. (author), Schott, D.L. (author)Biomass pellets provide a pivotal opportunity in promising energy transition scenarios as a renewable source of energy. A large share of the current utilization of pellets is facilitated by intensive global trade operations. Considering the long distance between the production site and the end-user locations, pellets may face fluctuating storage...journal article 2020
- document
-
Jovanova, J. (author), van den Bos, W. (author), Schott, D.L. (author)Design of floating terminals requires integrated approach as it requires multi-machine systems. Master students in mechanical engineering from Multi-ma-chine engineering track at TU Delft were assigned design of floating terminals as part of their Integration Project course. Each of seven student groups designed a specific piece of port...conference paper 2020
- document
-
Mohajeri, M. (author), van den Bos, Mats J. (author), van Rhee, C. (author), Schott, D.L. (author)An ideal unit of bulk transport or storage equipment is able to handle cohesive iron ore with consistent productivity. In practice, however, uncontrollable bulk property variations affect the productivity. Therefore, it is important to understand the effect of uncontrollable variations on the process. This study quantifies variability and...journal article 2020
- document
-
Mohajeri, M. (author), Helmons, R.L.J. (author), van Rhee, C. (author), Schott, D.L. (author)The computation time of Discrete Element Method (DEM) simulations increases exponentially when particle size is reduced or the number of particles increased. This critical challenge limits the use of DEM simulation for industrial applications, such as powder flow in silos. Scaling techniques can offer a solution to reduce computation time. In...journal article 2020
- document
-
Souravlias, D. (author), Dafnomilis, I. (author), Ley, Jens (author), Assbrock, Gerrit (author), Duinkerken, M.B. (author), Negenborn, R.R. (author), Schott, D.L. (author)The design and development of an offshore port terminal is a complex task that involves distinctive design and decision challenges. In this paper, we propose the implementation of a floating, modular, platform that can act as an additional terminal of a port, with the aim of expanding its current container handling capacity. To this end, we...journal article 2020
- document
-
Gilvari, H. (author), de Jong, W. (author), Schott, D.L. (author)With the recent increase in biomass pellet consumption, the mechanical degradation of pellets during transport and handling has become more important. ISO standard 17831-1 is an accepted global standard that is commonly used amongst researchers and industries to determine the mechanical durability of pellets. However, the measured mechanical...journal article 2020
- document
-
Gilvari, H. (author), de Jong, W. (author), Schott, D.L. (author)The presence and generation of fines and dust in the bulk of biomass pellets have inflicted several problems in the supply chain during transportation and storage, and the breakage behavior of pellets has been scarcely studied so far. Fines and dust are the consequences of impact and abrasive forces through the whole supply chain; however, the...journal article 2020
- document
-
Assbrock, Gerrit (author), Ley, Jens (author), Dafnomilis, I. (author), Duinkerken, M.B. (author), Schott, D.L. (author)Port terminals on floating modular platforms are a conceivable solution for the problem of limited space and water depths restrictions of ports in estuary regions. A design of a dedicated Transport&Logistic hub has been developed in the scope of the Horizon 2020 project Space@Sea. This paper addresses dedicated options of waterborne...conference paper 2020
- document
-
Katterfeld, Andre (author), Coetzee, Corne (author), Donohue, Timothy (author), Fottner, Johannes (author), Grima, Andrew (author), Ramirez Gomez, Alvaro (author), Ilic, Dusan (author), Kačianauskas, Rimantas (author), Necas, Jan (author), Schott, D.L. (author), Williams, Kenneth (author), Zegzulka, Jiri (author)Why a white paper for DEM calibration? Although DEM simulations are increasingly used in many research and industrial fields, a standard approach for the determination of the right contact model parameters does not currently exist. The white paper is aimed to provide an overview about best practices for DEM simulation in the field of bulk...report 2019
- document
-
Gilvari, H. (author), de Jong, W. (author), Schott, D.L. (author)Densification has been carried out for many years, mostly in biomass processing, animal feed production, and pharmaceutical industries. During the years, researchers and engineers attempted to improve the product quality and minimize the production costs. The most important quality parameters of solid bio-materials are the compressive...review 2019
- document
-
Pachon Morales, J.A. (author), Do, H.Q. (author), Colin, Julien (author), Puel, François (author), Perré, Patrick (author), Schott, D.L. (author)Biomass feeding problems greatly hinder the industrialization of entrained-flow gasification systems for production of 2nd generation biofuels. Appropriate DEM modelling could allow engineers to design solutions that overcome these flow problems. This work shows the application of a DEM calibration framework to produce a realistic, calibrated...journal article 2019
- document
-
Grashof, Bernd (author), Alvarez Grima, M. (author), Schott, D.L. (author), Helmons, R.L.J. (author)Rock cutting is a challenging process. Heavy equipment, large cutting forces, high wear rates and large amounts of required energy are common challenges when cutting rock. Traditionally, rock cutting is based on a linear motion of the cutting tool. However, a significant improvement on the cutting performance is expected when using non-linear...conference paper 2019
- document
-
Gilvari, H. (author), de Jong, W. (author), Schott, D.L. (author)The transportation, handling, and storage of biomass pellets are challenging due to pellet breakage and fines generation. The amount of fines generated during transportation and handling of biomass pellets is mostly measured in the laboratory using mechanical durability testers such as tumbling can method according to ISO 17831-1. This standard...conference paper 2019
- document
-
Yan, Y. (author), Vreeburg, Wouter (author), Chen, Guangming (author), Schott, D.L. (author)Using bionic surface on the material equipment interface of bulk handling equipment is a promising solution for wear reduction. A bionic surface is a flat surface outfitted with a pattern of convexes that disrupt the natural sliding flow of bulk material. Previous numerical work has shown a significant reduction of wear of bionic surfaces...conference paper 2019
- document
-
Gilvari, H. (author), de Jong, W. (author), Schott, D.L. (author)The breakage behaviour of biomass pellets with a diameter of 6 mm under uniaxial compression test was studied experimentally and numerically using the discrete element method (DEM). Two types of the available bonding contact models in EDEM software were used to compare the macroscopic properties including the maximum stress at failure, strain at...conference paper 2019
- document
-
Lommen, S.W. (author), Mohajeri, M. (author), Lodewijks, G. (author), Schott, D.L. (author)Purpose: The development of bulk material handling equipment can be accelerated and made less expensive when testing of virtual prototypes is adopted. However, the modelling of a grab unloader requires a large volume (77 m3) of iron ore pellets, making the computational costs prohibitive. This paper investigates the extent to which the...journal article 2019
- document
-
Evers, J.M. (author), Tavasszy, Lorant (author), van Duin, Ron (author), Schott, D.L. (author), Gorte, Frank (author)Food waste and incomplete orders at online supermarkets mainly occur due to inaccurate demand forecasting which leads to incorrect ordering of products. The objective of this study is to develop an accurate demand forecast model at product-level based on historical customer order data, give recommendations on implementation and describe impact...conference paper 2018
- document
-
Gilvari, H. (author), Karaca, Kadir (author), de Jong, W. (author), Schott, D.L. (author)The poster investigates the mechanical properties (Particle and bulk densities, compressive strength, bending strength, and the angle of repose) of a variety of torrefied and non-torrefied biomass pellets and shows the relationship between different properties. Moreover, a novel and quick method to determine the particle size distribution of...poster 2018