Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
Computational Thermal Sciences: An International Journal
ESCI SJR: 0.249 SNIP: 0.434 CiteScore™: 1.4

ISSN Print: 1940-2503
ISSN Online: 1940-2554

Computational Thermal Sciences: An International Journal

DOI: 10.1615/ComputThermalScien.v3.i1.40
pages 49-61

PREDICTION OF TURBULENT HEAT TRANSFER IN RADIALLY OUTWARD FLOW IN A TWISTED-TAPE INSERTED TUBE ROTATING IN ORTHOGONAL MODE

Brijkishore Soni
Mechanical Engineering Department, Indian Institute of Technology Bombay
Anil W. Date
Department Mechanical Engineering, Indian Institute of Technology, Bombay

ABSTRACT

This paper presents numerically computed pressure-drop and heat-transfer characteristics of turbulent developing flow in a tube rotating in orthogonal mode. The tube is fitted with a twisted tape. The flow is radially outward. Numerical predictions are obtained by solving three-dimensional elliptic transport equations in a tube with a length-to-diameter ratio of 14.5. Turbulence effects are captured through use of 8 high-Reynolds-number form of the k − ε model. It is assumed that the tube is at axially and peripherally constant wall temperature and that the tape is perfectly conducting. Numerical predictions are obtained for both clockwise and counter-clockwise tape twist with respect to the direction of the tube axis. Axial variations of the apparent friction factor and of the Nusselt number are presented for air (Pr = 0.7) for 10, 000 < Re < 50, 000, twist ratio 3 ≤ Y ≤ ∞, rotation number 0 ≤ Ro ≤ 0.15, and buoyancy parameter 0 ≤ ΒΔT ≤ 0.30.


Articles with similar content:

NUMERICAL SIMULATION OF DOUBLE-DIFFUSIVE MIXED CONVECTION IN A HORIZONTAL ANNULUS UNDER TANGENTIAL MAGNETIC FIELD, WITH A ROTATING OUTER CYLINDER
Heat Transfer Research, Vol.49, 2018, issue 14
Goodarz Ahmadi, Bengt Sunden, Mehdi Bidabadi, Alireza Khoeini Poorfar, Vahid Bordbar
TRANSIENT THERMAL AND VISCOUS IRREVERSIBILITIES THROUGH A POISEUILLE-BENARD CHANNEL IN PRESENCE OF A MAGNETIC FIELD
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2009, issue
Ammar Ben Brahim, Nejib Hidouri
NATURAL CONVECTION FLOW OF MICROPOLAR FLUID INSIDE A POROUS SQUARE CONDUIT: EFFECTS OF MAGNETIC FIELD, HEAT GENERATION/ABSORPTION, AND THERMAL RADIATION
Journal of Porous Media, Vol.21, 2018, issue 10
Nasir Ali, Tariq Javed, Mubbashar Nazeer
NATURAL CONVECTIVE AIR COOLING OF THE PCBs ARRAY IN A CLOSED CASING
Transport Phenomena in Thermal Engineering. Volume 2, Vol.0, 1993, issue
Franz Mayinger, Z. G. Wang
EFFECTS OF AXIAL MAGNETIC FIELD AND THERMAL CONVECTION ON A COUNTERROTATING VON KARMAN FLOW
Heat Transfer Research, Vol.47, 2016, issue 5
Emilia Crespo del Arco, Lyes Bordja, Rachid Bessaih, Eric Serre