Venting is a commonly used method to minimize the damage done by accidental explosions. Engineering guidelines and standards exist to estimate the minimum vent size required for a given enclosure [ ], however, these standards are not sufficiently reliable. Other approaches exist [ , ], but several issues remain unresolved due to the complex nature of the phenomena and the limited set of existing experimental data.
Historically, vented explosions have proven to be a challenge to model due to the wide range of physical phenomena present, all of which directly influence the dynamics of the process [ , ]. These phenomena include Helmholtz oscillations [4, ], the external explosion [4, ], flame instabilities , flam...
... middle of paper ...
...on of a flame-wrinkling LES combustion model to a turbulent mixing layer,” Proceedings of the 27th Int. Symp. on Combustion, Combustion Institute, Pittsburgh, PA, 899-907 (1998).
. Bradley, D., Gaskell, P. H. and Gu, X. J., “Burning velocities, Markstein lengths, and flame quenching for spherical methane-air flames: a computational study,” Combust. Flame 104 (2): 176-198 (1996).
. Bychkov, V., “Importance of the Darrieus-Landau Instability for Strongly Corrugated Turbulent Flames,” Physical Review E 68 (2003).
. Bradley, D., Lawes, M., Liu, K., Verhelst, S. and Woolley, R., “Laminar Burning Velocities of Lean Hydrogen–Air Mixtures at Pressures Up To 1.0 MPa,” Combust. Flame, 149: 162–172 (2007).
. Zeldovich, Y. B., Barenblatt, G. I., Librovich, V. B. and Makhviladze, G. M., Mathematical Theory of Combustion and Explosion, Consultants Bureau, New York, 1985.
Need Writing Help?
Get feedback on grammar, clarity, concision and logic instantly.Check your paper »
- The problem of the lab was to find the component in the mixture that had the highest composition by figuring out each of their masses (PS Dept., 2017). A mixture is an item that contains two or more pure substances, which are elements and compounds (Decoste, 2008). Elements and compounds are considered pure substances because they have a set composition, meaning the proportions are the same throughout the entire substance (Kavanah, 2016). Compounds can only be separated through chemical means. This is because the elements within a compound are chemically fused together (Decoste, 2008).... [tags: Mixture, Separation process, Chemical substance]
762 words (2.2 pages)
- Numerical Study of Tensile Properties of POM/ Woven Kenaf Composite. CHAPTER 1: INTRODUCTION 1.1 Background Study The geometry of woven fiber reinforced polymer like Polyoxymethylene (POM) and Woven Kenaf composite is quite complex. Therefore, to predict tensile properties of such composite requires numerical method. This project focuses on the use of The Laminator software and understanding the theories on Maximum Stress, Maximum Strain, Tsai-Hill, Hoffman, and Tsai-Wu failure to produces the required results.... [tags: woven fiber composite, geometry, ]
1555 words (4.4 pages)
- The proximate composition (protein, lipid, carbohydrate, ash and moisture) of three groups of seaweed; Green algae (Ulva lactuca and Enthromorpha intestinalis); Brown algae (Colpomenia sinuosa and Sargassum illicifolium) and Red algae (Gracilaria corticata and Hypnea valentiea) collected from the Persian Gulf coastal water were showed in table 1. Burtin, (2003) indicated that the protein content in brown algae generally is low (5-15% of the dry weight) compared with red and green algae (10-30% of dry weight), and the content also varies according to species and seasons cycle (Fleurence, 2004).... [tags: seaweed, composition, science, experiments, ]
1768 words (5.1 pages)
Numerical Modeling of Low Concentration Al2O3/Water Nanofluid Heat Transfer in an Annulus with Two-phase Mixture Method
- The set of governing differential equations has been discretized by the control volume method. SIMPLE algorithm was used as pressure–velocity coupling technique and second order upwind method was adopted for convective and diffusive terms. The resulting algebraic system solved by using Gauss–Seidel applied in a line going through all volumes in the computational domain. Convergence criteria for all parameter were restricted to be lower than10−6. In order to achieve more accuracy grid independence studies were performed on pure water individually in each model.... [tags: temperature, pressure, efficiency]
1067 words (3 pages)
- Bioretention has rapidly become one of the most versatile and widely used storm-water, best management practices (BMPs) throughout the United States and many parts of the world. It has recently become identified as a preferred site practice for green building design and leadership in energy and environmental design (LEED) certification. Despite the rapid acceptance of this BMP throughout the United States, detailed performance information and related design guidance are not currently available for many regions.... [tags: bioretention, hydraulic performance, soil types]
1813 words (5.2 pages)
- Composition music theory has a longing history of how it was brought up and the way it has evolved into new cultures. “Musical Composition, the act of conceiving a piece of music, the art of creating music, or the finished product. These meanings are interdependent and presume a tradition in which musical works exist as repeatable entities. In this sense, composition is necessarily distinct from improvisation.” (Crossley-Holland, Peter) Composition music theory is the study of which you learn to write and develop a creative ability to compose.... [tags: Music, Musical notation, Musical composition]
1977 words (5.6 pages)
- A mixture of endearingly vibrant colours, makes this modern, multi functional living room come to life in an instant. The colours of choice used impose a delightful air of trendy sophistication. Cotton white walls and dark wood floors acts as a blank canvas allowing colour to be introduced by its furnishings and accessories. Stripped back and neutral tones dominate the walls and floor surfaces. Apart from the Ultra Marin lightweight curtains which covers the full length of the window, from ceiling to floor and a striking feature wall.... [tags: Color, Light, Lighting, Color wheel]
745 words (2.1 pages)
- Imagine you are sitting in your office when a little child comes bouncing in to the room, filled with curiosity. They look around the room and begin to question everything they see before their eyes fall on a large bookshelf against the wall. The little child looks at the shelf in awe, and exclaims “There must be a million books there!” Most of us who have spent time with a little kid at some point have probably heard them over exaggerate when it comes to guessing the amount of something, but not all of us have considered why this might be.... [tags: Estimating Stimuli, Mathematical Cognition]
965 words (2.8 pages)
- Mixture and Compound Differences 1 One difference between mixtures and compounds is that compounds have a certain composition as opposed to mixtures that can be varied. Chemical compounds are made up of at least two elements that are bonded together in a fixed mass ratio that can only be split apart by chemical means. And a mixture is a substance created by merging at least two different materials with no chemical reaction. Also compounds can only be separated if they are destroyed. But the elements in mixtures can be physically separated from each other easily.... [tags: Chemistry ]
634 words (1.8 pages)
- Comparative Study of the use of the Baroque and Modern Flute in Composition A comparative study of the use of the barqoue and modern flute in composition, with specific reference to -- Sonata IV for flute and continuo by J.S Bach, and Sonata for flute and piano by Hindemith The baroque, or transverse flute is of great interest to me, mainly because of my own flute playing experience. Since listening to a concert which included both a modern orchestra and a baroque orchestra playing together in a specially written composition, and separately, I have considered the baroque flute a much softer and more beautiful instrument, in construction and sound.... [tags: Papers]
1074 words (3.1 pages)