Heat Transfer on Cylinder Covered with Close-fitting Fabrics : Part II. Heat Transfer on the Stagnation Point

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概要

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• The objective of investigation is to get a clear idea of the nature of wind penetration effects in clothing. The preceding study of wind penetration through fabric is extended, in this paper, to determine the heat transfer of fabric system. With the aid of heat transfer equation of porous media, the thermal insulation value of fabric layer can be described as a function of such arguments as α^*, some pertinent properties of fabric and wind velocity, where α^* is the characteristic number of contact layer referring to the manner of contact between fabric and cylinder. Quantitative agreement' between the theory and experimental data is considerably good. Then it is seen that the dynamic pressure of wind sets up penetration, and thereby augments heat transfer process. The insulation value decreases with an increasing wind velocity and the behaviour of the decreasing depends largely on α^*. Therefore α^* is an essential factor for assessing the value of a sample fabric in wind.

• 一般社団法人日本機械学会の論文

著者

• ISSHIKI Naotsugu

  Tokyo Institute of Technology

• TAKE-UCHI Masaaki

  Tokai University

• ISHIBASHI Yasushi

  Nippon Steel Cooperation

• NAGASAKA Akira

  Japan Air Line, Tokyo International Air Port

• Nagasaka Akira

  Japan Air Line Tokyo International Air Port

関連論文

• Heat Transfer of the Critical Air Flow in a Nozzle : 4th Report, The Flow and Heat Transfer Characteristics of an Accelerated Transonic Air Flow in a Divergent Nozzle
• Heat Transfer of the Critical Air Flow in a Nozzle : 3rd Report, Study on Heat Transfer of the Critical Air Flow in a Convergent Nozzle
• Heat Transfer of the Critical Air Flow In a Nozzle : 1st Report; Numerical Study on Heat Transfer of the Critical Air Flow in a Nozzle with Parallel Walls
• Heat Transfer on Cylinder Covered with Close-fitting Fabrics : Part III, Distribution of Local Heat Transfer Coefficients
• Study on Oblique Grid Shadow Graph
• Transient Thermal Stress in Slab of which Surfaces are Heated by Heat Transfer
• Heat Transfer on Cylinder Covered with Close-fitting Fabrics : Part II. Heat Transfer on the Stagnation Point
• Transient Hot Wire Method to Measure the Thermal Conductivity of Solid Materials
• Heat Transfer on Cylinder Covered with Close-fitting Fabrics : part I, Wind Penetration through Fabrics
• Analysis of Two-Dimensional Thermoelastic Problem in Doubly-Connected Region by Physical Analogy : Thermal Stress for a Solid with Hollow Square Profile
• A Theoretical Analysis and an Analogue Test of Two-Dimensional Thermal Stress : The Case When the Temperature of Boundaries for a Rectangular Cross Sectional Solid is Suddenly Changed
• Experiment Study on the Growth of Strain by Thermal Ratchet Mechanism
• The Experimental Study of Atmospheric Stirling Engines Using Pin-Fin Arrays' Heat Exchangers

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