Abstract:

Detailed understanding of flame quenching is required to improve the safety of modern fuel management systems that feature new material or new design. Heat removal by cold surfaces and radical quenching are the two critical factors that play a vital role in flame quenching. Simplified quenching configuration such as a narrow channel helps in studying those effects. In previous work, we showed that laminar flames at high velocity are harder to quench than self-propagating flames and turbulent flames. Therefore, the main objective of this study is to provide some insights on the thermal and chemical evolution of laminar flames during quenching events in narrow channels. The experimental rig is designed to investigate flames propagating at an apparent flame velocity in the range from 10 to 100 m/s. The chemical property of flames are characterized using hydroxyl (OH) radical laser-induced fluorescence (LIF). The temporal evolution of the temperature is measured by using Filtered Rayleigh Scattering (FRS). The OH concentration falling below the detection threshold showed the termination of the high-temperature chemistry just before flame quenching. The temperature at which flame quenching occurs is also quantified. For example, the flames of methane-air mixture with an equivalence ratio of 0.8 are quenched around 1600 K. 

Short Bio:

Ariff Magdoom Mahuthannan is from India. Ariff received his Bachelor degree in the Department of Aerospace Engineering in 2010 from Anna university. He received a Master of Engineering in the department of mechanical engineering (Lean Manufacturing) from Anna University, in 2012. He joined IIT-Madras and worked as a research assistant from 2012 to 2015 then he joined KAUST in 2015 as a Ph.D. student. He is working with Prof.Deanna Lacoste and Prof. William Roberts. He is currently working on the project to understand the flame quenching behavior in collaboration with The Boeing Company.

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• CONTACTEmmanuelle Sougrat

​Abstract: 

The ever-increasing  focus of policy-makers on environmental issues are pushing the combustion community towards making combustion cleaner by optimizing the combustion equipment in order to reduce emissions, improve efficiency and satisfy the increasing energy demand. A major part of this involves advancing modelling capabilities of these complex combustion systems, which is a combination of computational fluid dynamics with detailed chemical kinetic models. The predictive capability of these models depends on the accuracy to which individual chemical reaction rates, thermodynamic and transport parameters are known. A minor fraction of the rate constants and thermodynamic properties in the widely used kinetic mechanisms are experimentally derived or theoretically calculated. The remaining are approximated using rate rules and group additivity methods respectively for rate constants and thermodynamic properties. Machine Learning (ML) has been increasingly becoming a tool of choice for regression, replacing traditional function fittings. This is largely due to the advancements in the field of computer science that increased the computational power available in recent decades. Rate rules and group additivity incorporates simple functions and derive constants with a certain existing data and use these functions to estimate the unknown values. ML algorithms does the same without fixing a specific function there by letting algorithm to learn the non-linearity from the training data itself. With the new data coming in with time, ML algorithms learn better and improves over time, whereas this need not necessarily happen with traditional methods. While there were some works on application of ML to predict rate constants and molecular properties, these are concentrated on large-scale less-accurate or non-combustion relevant species, which limits their use in the combustion models. However, we can still incorporate some of the developments from those studies and the talk will be centered around it.

Bio: 

Kiran Yalamanchi is currently a PhD student in Combustion & Pyrolysis Chemistry (CPC) family with Prof. Mani Sarathy. He joined CCRC in April 2018 after working for a short time on chemical kinetics at RWTH Aachen university. Prior to that, he got his Bachelors and Masters degree from Indian Institute of Technology Madras in 2017. His interests lie in data science, chemical kinetics and combustion. After joining KAUST, Kiran worked on several interdisciplinary projects involving data science and combustion. He has worked with McLaren Racing Team on Formula 1 fuel design. Currently, Kiran is working on developing tools for estimating thermodynamics properties and prediction reaction rates, which he will discuss in this talk.

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• CONTACTEmmanuelle Sougrat

​Abstract:  After having set out a number of principles and tools essential for building an open innovation strategy, this conference focuses on a number of examples of pre-industrial and industrial achievements in the use of CO2, compounds and polymers bio-based for the development of new surfactants, interface agents and radical scavengers. All of this work highlights the importance of a strategy based on strong collaboration between the Academy and Industry.

Biography: International Consultant in Open Innovation Strategy. He was Senior Vice President Research and
Innovation & Executive Director Solvay Group. He is Associate Professor at Instituto Quimica,
Universitad Politecnica de Valencia (Spain) , Invited Professor at ENSCP (Paris University) and at
Agence Nationale de la Recherche (US equiv. NSA)..

What characterizes Dr Gérard MIGNANI is his passion for the Sciences, whose chemistry is relayed
by his strong force of innovations in order to solve important scientific and industrial challenges by
bringing new methodologies. His professional activities have always been in close and effective
collaboration with the academic world, which has led to the development of innovative technological
solutions, some of which have been the subject of international patents, high-level articles and
industrial developments such as: Intermediaries of vitamin A, functionalized silicone materials,
ceramic materials, NLO & OLED materials, biomass transformations, CO2 valorizations ....

Dr. Gérard Mignani did his scientific studies at the University of Orsay (Paris) and at the University of Rennes, at the
National School of Chemistry of Rennes (Lavoisier Medal of the Schools of Engineering - Major of Promotion, 1977)
and at the University of Rennes (DEA of Organic Chemistry, Pr Carrier, DEA Inorganic Chemistry, Pr Lucas). PhD
(Chemistry) thesis in 1980 and second PhD (Physical sciences) thesis in 1981 in the field of organometallic chemistry,
specifically homogeneous catalysis of steroids (Activation CH) including quantum chemistry (Catalysis), in Pr. R
Dabard (University of Rennes, financing Rhône-Poulenc) (Congratulations from the Jury).

In 1980, he joined the Rhône-Poulenc Group (Lyon Research Center, France) where he developed new methodologies
in organic synthesis (electronic transfers, catalysis at interfaces, ...), new catalytic systems (homogeneous and
heterogeneous) for access to Vitamin A , E, D, biotin, ketoprofen, terpenes ... During this period, Dr. Gerard Mignani
collaborated strongly with Professor Marc Julia on the development of strategies for access to vitamins (A and E) and
catalytic systems water-soluble. This work was concretized by industrial pilot tests. He has also collaborated closely with
Professor Christian Amatore on the chemistry of anion radicals and cations for electronic processes.

Dr. Gérard Mignani then completed a postdoctoral assignment at Prof. Seyferth - Massachusetts Institute of
Technology (Cambridge, USA) in the field of organometallic precursors of ceramics: TiN, HfN, ZrN, SiNC ...
(Mechanical and electronic properties) and in the field of cyclic polysiloxanes. This work made it possible to find
operating conditions for access to pure TiN via simple organometallic precursors. This work was done in close
collaboration with the Materials Department of Material sciences in MIT.

Back at Rhône-Poulenc, then Rhodia and later Solvay, he held several positions as Service Manager, Fellow Scientist
and Scientific Expert in the fields of : Organic chemistry and related catalyst, organometallic chemistry, material sciences
( Optics, electronic,..), functionalization of natural compounds, cross-metathesis catalysts, carbene chemistries, antisoots
compounds,..

Dr. Gérard Mignani has been part of the CNRS National Committee (Commission N ° 12) and participates in the
evaluation of ANR projects. He is also a member of the scientific committee of SYNTEFF (University of Oslo) and the
Walloon competitiveness cluster: GREEWIN. For the RHODIA Companies and currently SOLVAY, he is the
correspondent of many professors including Pr A .Corma, Pr Guy Bertrand, Pr Christian Amatore and also with Dr. Luc
Langer (Company Materia Nova, Surface chemistries), Pr Z.Zhu ( EPFL)...

These works has been the subject of numerous international patents and high-level scientific articles independently or
as part of academic collaborations.

One of Dr. Gérard Mignani's missions is to build and develop essential bridges between basic research and industrial challenges. His work has been the subject of numerous academic and industrial collaborations.

Dr Gerard Mignani has contributed at more 90 international articles (Science, Angew Chem,..), 2 book chapter, 3 Chem
Rev and more 152 patents including 75 US patents (WO & PCT) in many scientific and industrial areas.
Dr Gerard Mignani has presented around 20 talks at international conferences and teaches at Paris, Rennes and other
Universities.

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• CONTACTLinda J. Sapolu
• EMAILLinda.Sapolu@kaust.edu.sa

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• CONTACTProf. Shuyu Sun

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• CONTACTProf. Volker Vahrenkamp