Marco Marengo

Marco Marengo
University of Brighton · School of Computing, Engineering and Mathematics

Ph.D.

About

309
Publications
99,909
Reads
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6,905
Citations
Introduction
UNIVERSITY PROFESSOR OF ENGINEERING THERMODYNAMICS AND HEAT TRANSFER EDITOR of ATOMIZATION&SPRAYS JOURNAL MAIN RESEARCH AND EXPERTISE FIELD Experimental: drop impact, liquid sprays, liquid atomization, icing systems, superhydrophobic surfaces, wettability, two-phase flows, flow boiling, microgravity, microfluidics, Pulsating Heat Pipe Numerical: thermal control, thermal simulation, Heat Pipe, Loop Heat Pipe, Pulsating Heat Pipe, Heat sink design, FEM analysis, VOF simulations
Additional affiliations
September 2019 - present
University of Brighton
Position
  • Managing Director
January 2014 - present
University of Brighton
Position
  • Professor of Engineering
August 2012 - August 2012
University of Alberta
Position
  • Professor
Education
October 1992 - April 1996
Politecnico di Milano
Field of study
  • Energetics
October 1984 - November 1991

Publications

Publications (309)
Article
Full-text available
Thermal management is important for rotating machinery, such as spindles, grinding wheels or drillers, etc. If the heat cannot be dissipated in time, high temperatures will be generated, and abnormal operations or even destruction of the machinery may occur. Oscillating heat pipes (OHP) have attracted attention in thermal management and also have a...
Article
Flow boiling within microchannel heat sinks constitute a promising solution for the cooling of high-performance electronic devices, dissipating high values of heat flux. Yet still, due to the complexity of flow boiling in small scales, the effect of important parameters is not clearly defined. In the present study a numerical investigation on the e...
Article
The heat transfer performance of a flat-plate, flexible polypropylene pulsating heat pipe (PHP) is evaluated experimentally when the device is bent at different angles, and for different layouts of the evaporator and the condenser. Flexible pulsating heat pipes are a passive thermal management technology with important prospective applications in f...
Conference Paper
The effect of Al2O3 monolayer coating on the performance of a flat-plate polymeric pulsating heat pipe (PHP) is investigated experimentally in comparison with an identical PHP without coating. The use of flexible PHPs built with polymer materials will significantly advantage the thermal management of foldable and deployable electronics and systems,...
Article
Experimentalists are limited in the amount of information they can derive from drop impact experiments on porous surfaces because of the short timescales involved and the normally opaque nature of porous materials. Numerical simulations can supplement experiments and provide researchers with previously unattainable information such as velocity and...
Conference Paper
Full-text available
Aiming to improve on fast charge timings, all-electric range and to reduce costs and complexity, a Battery Thermal Management System (BTMS) with Loop Heat Pipes (LHPs) and graphite sheets is proposed. The LHP placed at the bottom of a prismatic cell module will transfer heat from the cells to a chiller, already part of the HVAC system of the vehicl...
Article
Full-text available
Passive two-phase heat transfer systems, such as pulsating heat pipes, are a promising thermal management solution for the rapidly growing space sector. The strong coupling between thermal and hydraulic phenomena complicated the development of reliable off-the-shelf components. This was due to the difficulties in establishing and maintaining the de...
Article
Full-text available
Owing to their simple construction, cost effectiveness, and high thermal efficiency, pulsating heat pipes (PHPs) are growing in popularity as cooling devices for electronic equipment. While PHPs can be very resilient as passive cooling systems, their operation relies on the establishment and persistence of slug/plug flow as the dominant flow regime...
Article
Full-text available
Oscillating heat pipes (OHP) have attracted much attention in thermal management due to its high heat transport capacity and simple structure. OHP also have the potential to transfer heat under rotational conditions, while research on OHP heat transfer performance under a system rotation is still insufficient. The thermal performance of a single cl...
Book
The Surface Wettability Effect on Phase Change collects high level contributions from internationally recognised scientists in the field. It thoroughly explores surface wettability, with topics spanning from the physics of phase change, physics of nucleation, mesoscale modeling, analysis of phenomena such drop evaporation, boiling, local heat flux...
Article
Machining processes can generate a good amount of heat in a short time due to friction. If the heat power is not properly dissipated, the temperature of the tool increases and can be harmful for the machining quality. It has been proven that an Oscillating Heat Pipe (OHP) has the potential to be used for the thermal management of the tool also in h...
Article
Full-text available
The present investigation aims to devise a thermal management system (TMS) for electric vehicles able to improve on limitations like charging time and all-electric range, together with the safety and environmental impact of the chosen thermal medium. A research gap is identified, as focus is often on addressing system thermal performance without co...
Article
In the present paper, a fundamental analysis on the effect of the channel aspect ratio on the bubble dynamics and heat transfer characteristics for the early transient stages of the bubble growth within confined microchannels of rectangular cross-section, under saturated flow boiling conditions, is conducted, utilising high resolution, 3D, transien...
Article
Full-text available
Phase change heat transfer within microchannels is considered one of the most promising cooling methods for the efficient cooling of high-performance electronic devices. However, there are still fundamental parameters, such as the effect of channel hydraulic diameter Dh, whose effects on fluid flow and heat transfer characteristics are not clearly...
Conference Paper
The thermal performance of flexible polypropylene pulsating heat pipes (PHPs) is characterized for different spatial orientations, different reciprocal positions of the evaporator and the condenser (configurations), and different bending angles (conformations). The dependence of PHPs performance on their geometric orientation, configuration and con...
Conference Paper
Full-text available
An innovative Battery Thermal Management System for a 3-cell Electric Vehicle module is proposed, involving Loop Heat Pipes and graphite sheets, with the particular aim of fast charging and reacting to automotive requirements. The design feasibility is verified through a Lumped Parameter Model, which has been validated comparing the data from an ex...
Conference Paper
This study is the first step towards a broader research intent: developing and optimising a Personal Comfort System for tertiary sector working environments. The entire industrial sector, and in particular offices, have seen changes in working habits, with a large increase in smart working to prevent COVID infection. The chance to partialise the HV...
Conference Paper
Full-text available
Energy performance certificates (EPCs) are useful tools that not only provide an indication on the efficiency of buildings, but also help raising awareness on the importance of improving their performance. However, the current implementation of EPCs is affected by issues that prevent their full potential to be exploited: lack of standardization acr...
Conference Paper
Full-text available
This study is part of a wider research aimed at creating building type databases for simplified dynamic thermal models of buildings. In particular, thermal inertia analysis is the focus of this paper, looking at its impact in terms of comfort and energy consumption in different climates and for different end uses. The impact of all factors influenc...
Conference Paper
Full-text available
Encapsulation, i.e. the coating of tiny solid or liquid particles in a liquid film, has received a growing interest among scholars due to its practical applications, especially in food and pharmaceutical industries. Encapsulation technology is used in coating and controlling drug delivery by protecting the active agents from environmental pressures...
Conference Paper
Full-text available
In the present paper the effect of solid surface thermophysical properties under saturated flow boiling conditions within a considered microchannel is numerically investigated. The simulations are performed by utilising a custom, enhanced VOF-based solver that has been developed in OpenFOAM CFD Toolbox and accounts for conjugate heat transfer betwe...
Article
The process of flow boiling within micro-passages plays a very important role in many industrial applications. However, there is still a lack of understanding of the effect of an important controlling parameter: surface wettability. In this paper, an advanced numerical investigation on the effect of wettability characteristics on single and multipl...
Article
Aiming to improve on key Electric Vehicles issues, such as maximum temperature during fast charging, parasitic power and cost reduction, an innovative thermal management system for a 3-cell battery module, including a flat plate Loop Heat Pipe and graphite sheet inserts, is presented. The proposed Loop Heat Pipe, located at the bottom of the module...
Article
Full-text available
The advent of foldable and wearable devices, such as the Samsung Galaxy Fold (2019) and Huawei Mate X (2019), require increased battery size and processor performance to drive their larger flexible displays. There is a growing need to develop flexible thermal management solutions to cool these foldable electronic devices. This research presents a c...
Article
A Pulsating Heat Pipe (PHP), specifically designed to be hosted on board the Heat Transfer Host of the International Space Station, is tested in microgravity conditions during the 67th Parabolic Flight Campaign promoted by the European Space Agency. The device consists in an aluminium tube (inner/outer diameter = 3/5 mm) closed in a 14 turns loop,...
Article
Full-text available
The Joint 19th IHPC (International Heat Pipe Conference) and the 13th IHPS (International Heat Pipe Symposium) was held at the University of Pisa, June 10th-14th, 2018. The joint conference focuses on topics related to heat pipes, thermosyphons and other two-phase thermal devices. The conference is the most important and attended scientific and net...
Article
Full-text available
In the present paper, an enhanced Volume of Fluid model is applied for the conduction of parametric numerical simulations, to investigate break-up phenomena of accelerating, elongated, vapour bubbles, within circular mini-channels. The effect of fundamental controlling parameters in the resulting break-up characteristics is investigated. Four diffe...
Article
A parametric analysis of the thermal performance of flat polypropylene pulsating heat pipes (PHPs) is presented. In particular, the thermal performance was characterized for pulsating heat pipes with different number of turns of the serpentine channel, different orientations with respect to gravity, and containing different heat transfer fluids. Th...
Conference Paper
Full-text available
Anumerical investigation on the effectof wettability characteristicson a single bubble growth duringsaturated flow boiling conditions within a microchannel,is conducted in the present paper.The numerical simulations are conducted with the open-source toolbox OpenFOAM, utilising auser-enhanced Volume OF Fluid (VOF)solver.The proposed solver enhancem...
Article
The key concept in wound dressing design and development is the fact that keeping a wound moist accelerates healing. Therefore, the selection of the appropriate wound dressing type is vital. The absorption of wound exudate by wound dressings can be considered as a microfluidic phenomenon that can be investigated either by performing high resolution...
Article
Using large scale molecular dynamics simulations, we study in detail the impact of nanometer droplets of low viscosity on flat substrates versus the wettability of the solid plate. The comparison between the molecular dynamics simulations and different macroscopic models reveals that most of these models do not correspond to the simulation results...
Article
Full-text available
A pulsating heat pipe (PHP) with alternating hydrophilic/superhydrophobic channels was tested at vertical position, bottom heat mode and different heat power inputs. The device consists in a copper tube (internal/external diameters of 3.18/4.76 mm), bent into a planar serpentine of ten channels and five U-turns. The tube is partially functionalized...
Article
Full-text available
Liquid penetration analysis in porous media is of great importance in a wide range of applications such as ink jet printing technology, painting and textile design. This article presents an investigation of droplet impingement onto metallic meshes, aiming to provide insights by identifying and quantifying impact characteristics that are difficult t...
Conference Paper
Full-text available
An enhanced Volume Of Fluid (VOF) based numerical simulation framework that accounts for conjugate heat transfer between a solid region and a two-phase flow region with phase-change due to evaporation and/or condensation, is applied in order to investigate the effect of global flow oscillation frequency and amplitude on the liquid film evaporation...
Conference Paper
Full-text available
An enhanced Volume Of Fluid (VOF) based numerical simulation framework that accounts for conjugate heat transfer between a solid region and a two-phase flow region with phase-change due to evaporation and/or condensation, is applied in order to investigate the effect of global flow oscillation frequency and amplitude in generated instabilities in t...
Article
An ultra-large flat plate copper heat pipe (180 × 180 mm²) was constructed using a thermal spray technique, and it was then thermally characterized. A porous copper wick was fabricated by using a flame spray torch to deposit a mixture of copper and aluminum particles onto the target substrate. A stainless-steel wire mesh acts as a mask so that the...
Article
Full-text available
When dealing with numerical simulations of boiling phenomena, the spontaneous appearance of vapor bubbles is one of the most critical feature to be addressed. Capturing bubble formation during the dynamics, instead of patching vapor regions as initial conditions, is crucial for the correct evaluation of nucleation rates and nucleation site density,...
Article
Full-text available
In order to enhance heat transfer in the abrasive-milling processes to reduce thermal damage, the concept of employing oscillating heat pipes (OHPs) in an abrasive-milling tool is proposed. A single-loop OHP (SLOHP) is positioned on the plane parallel to the rotational axis of the tool. In this case, centrifugal accelerations do not segregate the f...
Conference Paper
Full-text available
The paper presents a case study comparing the integration and coherence of available building occupancy data for use in early stage dynamic building performance simulation to support the an integrated building design process. Building upon previous work from the authors, a simplified dynamic simulation tool is used to quantify the impact of the use...
Preprint
Full-text available
An ultra-large flat plate copper heat pipe (180 × 180 mm²) was constructed using a thermal spray technique, and it was then thermally characterized. A porous copper wick was fabricated by using a flame spray torch to deposit a mixture of copper and aluminum particles onto the target substrate. A stainless-steel wire mesh acts as a mask so that the...
Article
Pulsating Heat Pipes are two phase passive heat transfer devices characterized by a thermally induced two phase oscillating flow. The correct detection of the dominant frequencies of such oscillations is fundamental to fully characterize the device thermofluidic operation but the studies available in the literature are very heterogenous and results...
Presentation
Full-text available
A mesoscale approach to address vapor bubble nucleation in metastable liquid is presented. The modeling allows to capture the spontaneous bubble formation thanks to a proper description of thermal fluctuations, through Fluctuating Hydrodynamics Theory
Article
Full-text available
An innovative type of engineered composite polymer sheet with enhanced thermal conductivity is described and tested. The concept is to sandwich a closed-loop serpentine channel, cut out in a polypropylene sheet and containing a self-propelled liquid-vapour mixture, between two sheets of the same material bonded by selective laser welding. Polymer m...
Article
The prediction of flow pattern transitions is extremely important to understand the coupling of thermal and fluid dynamic phenomena in two phase systems and it contributes to the optimum design of heat exchangers. Two phase flow regimes have been extensively studied under controlled mass flow rate and velocity. On the other hand, less effort has be...
Article
Full-text available
Oscillating heat pipes have the potential to combine with the grinding wheel to enhance heat transfer in grinding process to avoid thermal damage of workpiece and grinding wheel. Since the time of grinding process is short, it raises a requirement for a good start-up behavior of oscillating heat pipes inside grinding wheel. In order to understand t...
Conference Paper
Full-text available
An experimental study of a flat plate pulsating heat pipe has been performed under various gravity conditions during ESA 69 th parabolic flight campaign. A molybdenum plate, with 14 milled rectangular channels with cross-section of 3×3 mm 2 , was covered with a sapphire window, and tested in vertical position with ethanol as working fluid. If opera...
Conference Paper
Full-text available
Encapsulation of solid particles and liquid agents in a liquid shell is of exceptional interest in biotechnological, chemical and pharmaceutical fields such as personalized medicine, fluidized catalytic cracking, wire fabrication, catalytic reactions. Looking at the interaction between liquid drop and solid particles, we can study the special, idea...
Presentation
Full-text available
Nanofluids are promising candidates for improving combustion performance through reducing emissions (as a fuel spray additive) or as spray coolants in various thermal management systems (by enhancing the surface heat transfer rate). In this study, experiments were conducted to compare the viscosity, free spray properties and the cooling performance...
Article
Full-text available
The process of liquid drop impact onto a solid surface can be widely seen in both nature and industrial applications. Depending on the distance between the impact point and the surface edge (W), the impact can be categorized into three groups: (a) drop impact onto an infinite surface (surface is large, W is larger than the maximum value of radius o...
Article
Full-text available
Four Closed-Loop Flat Plate Pulsating Heat Pipes (FPPHP) with four different channel internal diameters have been tested under terrestrial (1 g), hyper (1.8-2 g) and micro-gravity conditions, during the ESA 64th Parabolic Flight campaign, at the same operating conditions (heat power range, cooling fluid temperature, vertical BHM orientation). Durin...