Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
Computational Thermal Sciences: An International Journal
ESCI SJR: 0.249 SNIP: 0.434 CiteScore™: 1.4

ISSN Druckformat: 1940-2503
ISSN Online: 1940-2554

Computational Thermal Sciences: An International Journal

DOI: 10.1615/ComputThermalScien.2012005098
pages 283-296

NUMERICAL STUDY OF HEAT AND FLUID FLOW PAST A CUBICAL PARTICLE AT SUBCRITICAL REYNOLDS NUMBERS

Kay Wittig
CIC Virtuhcon, Department for Energy Process Engineering and Chemical Engineering, Technische Universitat Bergakademie Freiberg, Fuchsmuhlenweg 9, 09596 Freiberg, Germany
Andreas Richter
CIC Virtuhcon, Technische Universitat Bergakademie Freiberg, Fuchsmuhlenweg 9, 09599 Freiberg, Germany
Petr A. Nikrityuk
CIC Virtuhcon, Department for Energy Process Engineering and Chemical Engineering, Technische Universitat Bergakademie Freiberg, Fuchsmuhlenweg 9, 09596 Freiberg, Germany

ABSTRAKT

This work is devoted to a numerical investigation into heat and fluid flow past a particle of a cubical shape. Additionally, it is a continuation of the recent publication by Richter and Nikrityuk (Int. J. Heat Mass Transfer, vol. 55, no. 4, pp. 1343−1354, 2012a), where the authors performed numerical calculations of drag forces and heat transfer coefficients for nonspherical particles in laminar flows with an angle of attack of zero. In this work we focus on the influence of the angle of attack on flow past a cubical particle. Due to the asymmetric flow, three-dimensional calculations were carried out based on the immersed boundary (IB) method in continuous forcing mode; see the review by Mittal and Iaccarino (Ann. Rev. Fluid Mech., vol. 37, pp. 239−261, 2005). In order to substantiate the results, additional calculations were made based on a so-called conventional computational fluid dynamics (CFD) solver using body-fitted meshes. Based on the present analysis of numerical results obtained for a cubical particle, new correlations for both the drag coefficient (cD) and the Nusselt number (Nu) were developed. In addition to the Prandtl and Reynolds numbers, both correlations incorporate the angle of attack. A significant influence of the particle orientation on the characteristics cD and Nu was observed. The accuracy of the closures developed for cD and Nu is discussed, comparing the relations developed with published models.


Articles with similar content:

NUMERICAL STUDY OF HEAT AND FLUID FLOW PAST A CUBICAL PARTICLE AT SUB-CRITICAL REYNOLDS NUMBERS
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2012, issue
Andreas Richter, Petr A. Nikrityuk, Kay Wittig
NONSTATIONARY FLOW OVER THE LIFTING ROTOR FOR REGIMES OF STEEP GLIDING AND VORTEX RING
TsAGI Science Journal, Vol.43, 2012, issue 3
Valentina Michailovna Scheglova
Resonance Phenomena in Orthogonal Waveguide Junction with Anisotropic Filling
Telecommunications and Radio Engineering, Vol.55, 2001, issue 3
A. V. Strizhachenko, V. V. Chizhov, A. A. Zvyagintsev
NUMERICAL STUDY OF THE EFFECT OF A NANOFLUID WITH NANOPARTICLES OF NONUNIFORM SIZE ON NATURAL CONVECTION IN AN INCLINED ENCLOSURE
Nanoscience and Technology: An International Journal, Vol.8, 2017, issue 4
Sina Niazi, Mehrdad Naderi Beni
Performance comparison of relations for nanofluids properties in the CFD prediction of mixed convection
Computational Thermal Sciences: An International Journal, Vol.3, 2011, issue 3
Amin Behzadmehr, Mahmood Akbari, Nicolas Galanis