Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
Heat Transfer Research
Facteur d'impact: 0.404 Facteur d'impact sur 5 ans: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

Volumes:
Volume 50, 2019 Volume 49, 2018 Volume 48, 2017 Volume 47, 2016 Volume 46, 2015 Volume 45, 2014 Volume 44, 2013 Volume 43, 2012 Volume 42, 2011 Volume 41, 2010 Volume 40, 2009 Volume 39, 2008 Volume 38, 2007 Volume 37, 2006 Volume 36, 2005 Volume 35, 2004 Volume 34, 2003 Volume 33, 2002 Volume 32, 2001 Volume 31, 2000 Volume 30, 1999 Volume 29, 1998 Volume 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2018025038
pages 605-616

EFFECTS OF SINUSOIDAL STRIP ELEMENT WITH DIFFERENT AMPLITUDES ON HEAT TRANSFER AND FLOW CHARACTERISTICS OF CIRCULAR CHANNELS

Aziz Hakan Altun
Department of Airframe and Powerplant Maintenance, Selcuk University, 42031 Konya, Turkey
Mehmet Gürdal
Department of Mechanical Engineering, Karabuk University, 78050 Karabuk, Turkey
Adnan Berber
Department of Mechanical Engineering, Necmettin Erbakan University, 42370 Konya, Turkey

RÉSUMÉ

In this study, the effect of Reynolds number in turbulent flow on heat transfer and flow characteristics for different sinusoidal decoupled strip elements placed separately from the pipe was investigated experimentally. Experiments were carried out under forced convection and constant heat flux conditions. Corrugated strip elements were positioned axially at the pipe center, which draws a sinusoid used as a turbulator. Experiments were repeated for three different amplitudes of sinusoidal strip elements with 3D/4 width, D/8, 3D/16, and D/4. Experiments showed that although the strip elements enhanced heat transfer at different rates, they also caused a considerable pressure drop. As a result, it was seen that the heat transfer ratio, i.e., the Nusselt number, increased with the amplitude value. This ratio is 47% to 80% at the D/8 amplitude, 44% to 100% at the 3D/16 amplitude, and 75% to 174% at the D/4 amplitude in a straight pipe. It was determined that the friction coefficient is significantly affected by a sinusoidal corrugated strip element. It was determined that the value of friction coefficient is around 0.02 in a smooth pipe, 0.17 to 0.25 at n = D/8, 0.35 to 0.42 at n =3D/16, and 0.43 to 0.45 at n = D/4


Articles with similar content:

EXPERIMENTAL INVESTIGATION OF THE EFFECT OF FLOW BLOCKAGES ON HEAT TRANSFER AND FLUID FRICTION IN A ROUND TUBE USING WALL-ATTACHED CIRCULAR RINGS
Heat Transfer Research, Vol.50, 2019, issue 1
Narayan K. Sane, Sandeep S. Kore, Adhikrao Patil
HEAT TRANSFER TO PULSATING, TURBULENT GAS FLOW
International Heat Transfer Conference 7, Vol.6, 1982, issue
Donald M. McEligot, M. F. Taylor , J. S. Park
3D COMPUTATIONAL STUDY OF FLUID FLOW AND HEAT TRANSFER IN A DIMPLE ENHANCER CHANNEL
Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017), Vol.0, 2017, issue
Suvanjan Bhattacharyya, Arnab Banerjee, Anindya Guin, Himadri Chattopadhyay
Heat Transfer in a Transverse Extended Cavity with Inclined Walls in a Turbulized Flow
Heat Transfer Research, Vol.37, 2006, issue 5
Viktor I. Terekhov, Nadezhda I. Yarygina, A. Yu. D'yachenko
THE IMPROVEMENT OF THERMAL PERFORMANCES OF TUBULAR HEAT EXCHANGERS BY USING WIRE-COIL INSERTS
ICHMT DIGITAL LIBRARY ONLINE, Vol.1, 2000, issue
Bogosav Vasijevic, Rade Milenkovic