Abstract
From the dimensional analysis for high velocity gas flow in a tube, our recommendable dimensionless modulus, Jλ (Tw-Tg) /3 600 μV2, is introduced, which is named Dissipation Ratio and expretssd by Di. In order to recognize the effect of Di, we performed an experiment, in which air velocity flowing through an annular cross section was 70∼200 m/s, the rate of heat transfered into air from the inner surface 300∼20000 kcal/m2·h and the length of tube 55∼280 mm. From our result, the relation between heat flux and dissipation ratio is obtained and our experimental formulae is expressed by Nu, Re, L/D and Di.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Transactions of the Japan Society of Mechanical Engineers
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
