Effect of Fin Passage Length on Optimization of Cylinder Head Cooling Fins PDF Download
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781724794406
Category :
Languages : en
Pages : 36
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Book Description
The heat transfer performance of baffled cooling fins on cylinder heads of small, air-cooled, general-aviation aircraft engines was analyzed to determine the potential for improving cooling fin design. Flow baffles were assumed to be installed tightly against the fin end edges, an ideal baffle configuration for guiding all flow between the fins. A rectangular flow passage is thereby formed between each set of two adjacent fins, the fin base surface, and the baffle. These passages extend around each side of the cylinder head, and the cooling air absorbs heat as it flows within them. For each flow passage length, the analysis was concerned with optimizing fin spacing and thickness to achieve the best heat transfer for each fin width. Previous literature has been concerned mainly with maximizing the local fin conductance and has not considered the heating of the gas in the flow direction, which leads to higher wall temperatures at the fin passage exits. If the fins are close together, there is a large surface area, but the airflow is restricted. Siegel, R. and Graham, R. W. Glenn Research Center NASA-TP-1054, E-9098 RTOP 505-05...
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781724794406
Category :
Languages : en
Pages : 36
Get Book Here
Book Description
The heat transfer performance of baffled cooling fins on cylinder heads of small, air-cooled, general-aviation aircraft engines was analyzed to determine the potential for improving cooling fin design. Flow baffles were assumed to be installed tightly against the fin end edges, an ideal baffle configuration for guiding all flow between the fins. A rectangular flow passage is thereby formed between each set of two adjacent fins, the fin base surface, and the baffle. These passages extend around each side of the cylinder head, and the cooling air absorbs heat as it flows within them. For each flow passage length, the analysis was concerned with optimizing fin spacing and thickness to achieve the best heat transfer for each fin width. Previous literature has been concerned mainly with maximizing the local fin conductance and has not considered the heating of the gas in the flow direction, which leads to higher wall temperatures at the fin passage exits. If the fins are close together, there is a large surface area, but the airflow is restricted. Siegel, R. and Graham, R. W. Glenn Research Center NASA-TP-1054, E-9098 RTOP 505-05...
Author: Robert Siegel
Publisher:
ISBN:
Category :
Languages : en
Pages : 40
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Book Description
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 578
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Author:
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ISBN:
Category : Astronautics
Languages : en
Pages : 620
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Author:
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ISBN:
Category : Mechanical engineering
Languages : en
Pages : 782
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 356
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 1068
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Author:
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Category : Government publications
Languages : en
Pages : 546
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Author:
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Category : Public administration
Languages : en
Pages : 1228
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Author: Lewis Research Center
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 356
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Book Description
This compilation of abstracts describes and indexes over 780 technical reports resulting from the scientific and engineering work performed and managed by the Lewis Research Center in 1977. All the publications were announced in the 1977 issues of STAR (Scientific and Technical Aerospace Reports) and/or IAA (International Aerospace Abstracts). Documents cited include research reports, journal articles, conference presentations, patents and patent applications, and theses.