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On the Importance of Model Selection for CFD Analysis of High Temperature Gas-Solid Reactive Flow; Case Study: Post Combustion Chamber of HIsarna Off-Gas System

Hosseini, A. (author), Hage, Johannes (author), Meijer, Koen (author), Offerman, S.E. (author), Yang, Y. (author)

In this paper a CFD analysis of HIsarna off-gas system for post combustion of CO-H2-carbon particle mixture is presented to evaluate the effect of different sub-models and parameters on the accuracy of predictions and simulation time. The effects of different mesh type, mesh grid size, radiation models, turbulent models, kinetic mechanism,...

journal article 2023

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Computational Fluid Dynamics Modeling of HIsarna Off-Gas System: Wall Modeling and Heat Loss Prediction

Hosseini, A. (author), Calis, Randy (author), van der Plas, Dirk (author), Put, Pieter (author), Agema, Jelle (author), Meijer, Koen (author), Hage, Johannes (author), Offerman, S.E. (author), Yang, Y. (author)

The HIsarna off-gas system wall is a cooling jacket made of cooling pipes arranged in the radial direction and in a circular pattern. Part of the off-gas system cooling pipes are isolated using a low-thermal-conductivity refractory material to protect the cooling pipe from melting and thermal stresses. During long runs and due to...

journal article 2023

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Neural cellular automata for solidification microstructure modelling

Tang, Jian (author), Kumar, Siddhant (author), De Lorenzis, Laura (author), Hosseini, Ehsan (author)

We propose Neural Cellular Automata (NCA) to simulate the microstructure development during the solidification process in metals. Based on convolutional neural networks, NCA can learn essential solidification features, such as preferred growth direction and competitive grain growth, and are up to six orders of magnitude faster than the...

journal article 2023

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An Ultrasonically-Powered System for 1.06mm³ Implantable Optogenetics and Drug Delivery Dust

Laursen, Kjeld (author), Zamani, M. (author), Rezaeiyan, Y. (author), Hosseini, Seyedsina (author), Mondal, Tanmay (author), Corbett, Brian (author), Ouagazzal, Abdel Mouttalib (author), Amalric, Marianne (author), Moradi, Farshad (author)

This brief presents an ultrasonically powered micro-system for deep tissue optogenetic stimulation. The developed system is composed of a Base for Powering and Controlling (BPC) and an implantable Dust for optogenetics and drug delivery. The Dust consists of a piezoelectric crystal, a rectifier chip, and a micro-scale custom-designed light...

journal article 2023

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Ultrasonically Powered and Controlled Microsystem for Dual-Wavelength Optogenetics with a Multi-Load Regulation Scheme

Rashidi, A. (author), Zamani, M. (author), Mondal, Tanmay (author), Hosseini, Seyedsina (author), Laursen, Kjeld (author), Corbet, Brian (author), Moradi, Farshad (author)

This letter presents an ultrasonically powered dual-wavelength optogenetic device that targets simultaneous excitation and inhibition of neural activities, or in a broader sense, optical stimulation in two distinct wavelengths for targeting different populations of neurons. This can be applied to a variety of neurological disorders. The...

journal article 2023

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CFD modelling of the off-gas system HIsarna iron making process part 2: reflux chamber geometry modification and effects on flow behaviour

Hosseini, A. (author), Dhiman, Vinod (author), Meijer, Koen (author), Zeilstra, Christiaan (author), Hage, Johannes (author), Peeters, Tim (author), Offerman, S.E. (author), Yang, Y. (author)

A three-dimensional computational fluid dynamics (CFD) model for the HIsarna off-gas system is set up and validated by real plant data. In the model detailed reaction mechanism and kinetic data for post-combustion of CO-H2 mixture and carbon particles are incorporated. The results are presented and discussed in another study (Part 1) by the...

journal article 2022

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Granular Flow Modeling of Galvanized Steel Scrap Injection into the HIsarna Iron-Making Reactor

Hosseini, A. (author), Georgakopoulos, E. (author), Dihman, Vinod (author), Hage, Johannes (author), Meijer, Koen (author), Zeilstra, Christiaan (author), Offerman, S.E. (author), Yang, Y. (author)

Galvanized steel scrap flow and injection into the HIsarna reactor are investigated using discrete element method (DEM). The scrap particle is fed into the reactor through an inclined chute and hits the slag surface where the zinc content is evaporated and solid particles melt. A DEM model is setup and validated using experimental data...

journal article 2022

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CFD modeling of the building integrated with a novel design of a one-sided wind-catcher with water spray: Focus on thermal comfort

Foroozesh, Jamal (author), Hosseini, S. H. (author), Ahmadian Hosseini, A. J. (author), Parvaz, F. (author), Elsayed, K. (author), Uygur Babaoğlu, Nihan (author), Hooman, K. (author), Ahmadi, G. (author)

The rising energy demand for buildings has enhanced public awareness of sustainable energy sources and technologies. In particular, natural ventilation systems such as wind-catchers have attracted considerable new attention. A new wind-catcher design with single-stage direct-air evaporative cooling was proposed for indoor air conditioning. An...

journal article 2022

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CFD modelling of the off-gas system of HIsarna iron making process. Part 1: model development using detailed reaction mechanism for post-combustion of CO–H₂ mixture and carbon particles

Hosseini, A. (author), Dhiman, Vinod (author), Meijer, Koen (author), Zeilstra, Christiaan (author), Hage, Johannes (author), Peeters, Tim (author), Offerman, S.E. (author), Yang, Y. (author)

The HIsarna process is a new and breakthrough smelting reduction process for hot metal (liquid iron) production from iron ores and coal directly fed into the reactor. The flue gas from the main reactor enters the off-gas system containing small amounts of H₂, CO and carbon particles which need to be removed before further treatment...

journal article 2022

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Thermodynamic analysis of zinc ferrite (ZnFe₂O₄) formation inside the HIsarna off-gas system

Hosseini, A. (author), Moosavi-Khoonsari, Elmira (author), Meijer, Koen (author), Hage, Johannes (author), Peeters, Tim (author), Offerman, S.E. (author), Yang, Y. (author)

HIsarna reactor is characterized by a high raw materials versatility and is therefore attractive for processing secondary iron sources. Among the materials that can be recycled through HIsarna, zinc-bearing material has drawn a special attention. Based on the plant data, once dust-containing Zinc was injected into the main reactor, a final...

journal article 2022

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A facile, green fabrication of aqueous nanofluids containing hydrophilic functionalized carbon nanotubes toward improving heat transfer in a closed horizontal flow passage

Akram, Naveed (author), Hosseini, M. (author), Sadri, Rad (author), Kazi, S.N. (author), Kasaeian, Alibakhsh (author), Yarmand, H. (author), Hooman, K. (author), Ahmad, Roslina (author)

In the present research, the synthesis of highly stable multiwalled carbon nanotubes in aqueous media is developed using a one-pot, covalent and green functionalization technique to improve the heat transfer and hydrodynamic behavior of a horizontal stainless-steel tube subjected to a uniform heat flow at its outer surface. Instead of using...

journal article 2022

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Off-Gas System Scale-Up of HIsarna Iron-Making Process: A CFD-Based Approach

Hosseini, A. (author), Hage, Johannes L.T. (author), Duiker, Arjan (author), Meijer, Koen (author), Peeters, Tim (author), Offerman, S.E. (author), Yang, Y. (author)

For all industrial applications, predicting system characteristics and behavior plays a vital role before constructing costly and complex multi-physic systems. Correct and reliable predictions become even more important once the aim is to go from small- to large-scale processes to establish an industrial demonstrations. In this study, a CFD...

journal article 2022

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Experimental and Discrete Element Method Analysis of Galvanized Steel Scrap Particles Along and After an Inclined Chute

Georgakopoulos, E. (author), Hosseini, A. (author), Kerry, T.J. (author), Hage, Johannes (author), Meijer, Koen (author), Offerman, S.E. (author), Yang, Y. (author)

HIsarna is a novel ironmaking process with great raw materials versatility that is attractive for various secondary resources. Among the materials that can be recycled, there is steel scrap which is fed to the furnace bath through an inclined chute. The velocity distribution of the scrap particles along the chute affects the particles’...

journal article 2022

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A comparison between support vector machine and water cloud model for estimating crop leaf area index

Hosseini, Mehdi (author), McNairn, Heather (author), Mitchell, Scott (author), Robertson, Laura Dingle (author), Davidson, Andrew (author), Ahmadian, Nima (author), Bhattacharya, Avik (author), Borg, Erik (author), Kumar, V. (author)

The water cloud model (WCM) can be inverted to estimate leaf area index (LAI) using the intensity of backscatter from synthetic aperture radar (SAR) sensors. Published studies have demonstrated that the WCM can accurately estimate LAI if the model is effectively calibrated. However, calibration of this model requires access to field measures...

journal article 2021

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Bioprinting of a Zonal-Specific Cell Density Scaffold: A Biomimetic Approach for Cartilage Tissue Engineering

Dimaraki, A. (author), Diaz Payno, P.J. (author), Minneboo, M.B. (author), Nouri Goushki, M. (author), Hosseini, M. (author), Kops, N. (author), Narcisi, R. (author), Mirzaali, Mohammad J. (author), van Osch, G.J.V.M. (author), Fratila-Apachitei, E.L. (author), Zadpoor, A.A. (author)

The treatment of articular cartilage defects remains a significant clinical challenge. This is partially due to current tissue engineering strategies failing to recapitulate native organization. Articular cartilage is a graded tissue with three layers exhibiting different cell densities: the superficial zone having the highest density and the...

journal article 2021

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The influence of inter-laminar thermal contact resistance on the cooling of material during laser assisted fiber placement

Çelik, O. (author), Hosseini, S.M.A. (author), Baran, Ismet (author), Grouve, Wouter J.B. (author), Akkerman, Remko (author), Peeters, D.M.J. (author), Teuwen, Julie J.E. (author), Dransfeld, C.A. (author)

The effect of thermal contact resistance (TCR) correlated to the degree of intimate contact (DIC) between the incoming tape and the substrate on the temperature history during laser-assisted fiber placement (LAFP) was investigated. A novel experimental methodology was designed to understand the effect with a non-contact method which did not...

journal article 2021

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BN-SLIM: A Bayesian network methodology for human reliability assessment based on Success Likelihood Index Method (SLIM)

Abrishami, S. (author), Khakzad, N. (author), Hosseini, Seyed Mahmoud (author), van Gelder, P.H.A.J.M. (author)

Success Likelihood Index Model (SLIM) is one of the widely-used deterministic techniques in human reliability assessment especially when data is insufficient. However, this method suffers from epistemic uncertainty as it extremely relies on expert judgment for determining the model parameters such as the rates and weights of the performance...

journal article 2020

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A data-based comparison of BN-HRA models in assessing human error probability: An offshore evacuation case study

Abrishami, S. (author), Khakzad, Nima (author), Hosseini, Seyed Mahmoud (author)

Bayesian Network (BN) has been increasingly exploited to improve different aspects of Human Reliability Analysis (HRA), resulting in a new generation of HRA techniques, known as BN-HRA models. However, validating and evaluating the accuracy of BN-HRA models is still a challenging task. In this study, we have assessed and compared the...

journal article 2020

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Characterization of Soluble Algal Products (SAPs) after electrocoagulation of a mixed algal culture

Rafiee, Poorya (author), Ebrahimi, S. (author), Hosseini, M. (author), Tong, Yen Wah (author)

The dewatering of algal culture requires coagulation of the algal cells. However, the coagulation in a continuous operation is slowed down through the excretion of Soluble Algal Products (SAPs). Electrocoagulation (EC), already utilized as a coagulation technique, has been investigated for its effects on SAPs characterizations. A mixed...

journal article 2020

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The evolution patterns of temperature, pH, and voltage during the removal of chemical oxygen demand from a landfill leachate using electrocoagulation under different conditions

Rafiee, Poorya (author), Hosseini, M. (author), Ebrahimi, S. (author)

In this study, electrocoagulation was evaluated for landfill leachate as a complex wastewater. Effects of all significant parameters including inter-electrode gap, current density, electrode material, time, pH, electrode numbers, salinity, and concentration were investigated. This study reports the changing patterns for chemical xxygen demand...

journal article 2020