Sam Goroshin

McGill University, Mechganical Engineering, Department Member

Followers

109

Following

Co-authors

Public Views

Please see more papers at:

https://www.researchgate.net

have questions? ask: [email protected]

less

Ehsan Houshfar

University of Tehran

Obisanya Adekunle

Yaba College of Technology, Lagos. Nigeria

Avinash Chandra

Thapar University, Patiala

Gerard Hawkins

Mohammad Rahmatullah

Institut Teknologi Sepuluh Nopember

Yunardi Yunardi

Universitas Syiah Kuala Banda Aceh

Noorfidza Yub Harun

Universiti Teknologi PETRONAS

Ying-Ling Liu

National Tsing Hua University

Jana Javornik

University of East London

Gwen Robbins Schug

University of North Carolina at Greensboro

Interests

Uploads

Papers by Sam Goroshin

Some fundamental aspects of laminar flames in nonvolatile solid fuel suspensions

Progress in Energy and Combustion Science

This paper critically reviews the theoretical and experimental literature regarding the fundament... more This paper critically reviews the theoretical and experimental literature regarding the fundamental aspects of flames in nonvolatile solid fuel suspensions. Unlike volatile fuels that form continuous premixed gaseous flame sheets, flame fronts in nonvolatile suspensions are driven by heterogeneous reactions localized on the surface, or near the surface, of individual particles. Practically all peculiarities of heterogeneous flames can be linked to this &quot;flame-inside-the-flame&quot; combustion front structure. These localized reactions enable particles to self-heat and transition from kinetically to diffusion-limited heterogeneous reaction during the process of particle ignition. After ignition, burning particles behave as individual diffusion micro-reactors that are insensitive to the bulk gas temperature and overall heat loss from the system. Relatively small quenching distances of the flame in suspensions, long plateaus in the dependence of burning velocity on fuel concentration stretching to very fuel-rich mixtures, and the discrete flame propagation regime, where burning velocity is insensitive to particle combustion time and the flame-front structure is rough and nonuniform, are all manifestations of particle ignition and combustion in the diffusion-limited regime. This review summarizes the key experimental evidence of laminar flame structure and flame speed from a variety of experimental apparatus both in the laboratory and under microgravity conditions, and interprets these results in terms of relatively simple theoretical models. Heterogeneous flames are observed to exhibit many of the thermodiffusive and hydrodynamic instabilities of homogeneous flames, as well as several new instabilities that arise from the multiphase nature of the fuel and particle ignition and extinction. Flames of binary mixtures of heterogeneous fuels, or gaseous and solid fuel mixtures, are also reviewed and it is shown that a simple model based on matching the flame speed between thermally interacting fronts can capture the key physics. Finally, the last chapter of the review discusses why the important or even crucial role of radiation heat transfer predicted by theoretical models for flames in suspensions is not supported by the available experimental evidence. It is argued that large spatial scales of radiation heat transfer do not permit separation of the radiation transfer problem from boundary conditions and flow configuration, making one-dimensional flame models that include radiation inadequate for the description of flames in the laboratory and even in relatively large unconfined dust clouds.

Percolating Reaction–Diffusion Waves (PERWAVES)—Sounding rocket combustion experiments

Acta Astronautica, 2020

This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

Sam Goroshin

Uploads

Papers by Sam Goroshin

Log In