CFD Analysis of Scramjet Engines with Ramp fuel Injector using Non-Premixed Combustion Model

1
K.M.Pandey
K.M.Pandey Ph.D
2
Dr. K. Deb
Dr. K. Deb
3
A.P.Singh
A.P.Singh
1 National Institute of Technology, Silchar, Assam, India.

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GJRE Volume 12 Issue A4

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CFD Analysis of Scramjet Engines with Ramp fuel Injector using Non-Premixed Combustion Model Banner
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The air standard efficiency for SI engine is approximately 60% under full load condition but the actual brake thermal efficiency under full load condition is approximately 32.6% which is due to the various losses that occur. One of the primary lose is burning time loss which is approximately 4% and occur due to finite time combustion of the charge. This lose can be reduced to some extend by generation of a higher degree of swirl which will increase turbulence intensity with in the engine cylinder. The production of turbulence of higher intensity is one of the most important factors for stabilizing the ignition process, fast propagation of flame, especially in case of lean-burn combustion In general, two type of vortices are utilized in order to generated and preserve the turbulence flows efficiently. These vortices are usually known as swirl and tumble flows, which are organized rotations in the horizontal and vertical plane of the engine cylinder, respectively.

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No external funding was declared for this work.

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The authors declare no conflict of interest.

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K.M.Pandey. 2012. \u201cCFD Analysis of Scramjet Engines with Ramp fuel Injector using Non-Premixed Combustion Model\u201d. Global Journal of Research in Engineering - A : Mechanical & Mechanics GJRE-A Volume 12 (GJRE Volume 12 Issue A4): .

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Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

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July 3, 2012

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English

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The air standard efficiency for SI engine is approximately 60% under full load condition but the actual brake thermal efficiency under full load condition is approximately 32.6% which is due to the various losses that occur. One of the primary lose is burning time loss which is approximately 4% and occur due to finite time combustion of the charge. This lose can be reduced to some extend by generation of a higher degree of swirl which will increase turbulence intensity with in the engine cylinder. The production of turbulence of higher intensity is one of the most important factors for stabilizing the ignition process, fast propagation of flame, especially in case of lean-burn combustion In general, two type of vortices are utilized in order to generated and preserve the turbulence flows efficiently. These vortices are usually known as swirl and tumble flows, which are organized rotations in the horizontal and vertical plane of the engine cylinder, respectively.

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CFD Analysis of Scramjet Engines with Ramp fuel Injector using Non-Premixed Combustion Model

Dr. K. Deb
Dr. K. Deb
K.M.Pandey
K.M.Pandey National Institute of Technology, Silchar, Assam, India.
A.P.Singh
A.P.Singh

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