Numerical Study on the Mixed Convection Heat Transfer between a Sphere Particle and High Pressure Water in Pseudocritical Zone
Joint Authors
Lu, Youjun
Wei, Jin-Jia
Wei, Liping
Source
Advances in Mechanical Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-03-27
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Mixed convection heat transfer between supercritical water and particles is a major basic problem in supercritical water fluidized bed reactor, but little work focused on this new area in the past.
In this paper, a numerical model fully accounting for thermophysical property variation has been established to investigate heat transfer between supercritical water and a single spherical particle under gravity.
Flow field, temperature field and Nusselt number are analyzed based on the simulation results.
Results show that buoyancy force has a remarkable effect on flow and heat transfer process.
When the direction of gravity and flow are opposite, the gravity enhances the heat transfer before the separation point and inhibits the heat transfer after the separation point.
When gravity is incorporated in calculation, a higher temperature gradient and a thinner boundary layer in the vicinity of the particle surface are observed before separation point, and the situations are just the reverse after separation point.
Variation of specific heat and conductivity plays a main role in determination of heat transfer coefficient.
American Psychological Association (APA)
Wei, Liping& Lu, Youjun& Wei, Jin-Jia. 2013. Numerical Study on the Mixed Convection Heat Transfer between a Sphere Particle and High Pressure Water in Pseudocritical Zone. Advances in Mechanical Engineering،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-478766
Modern Language Association (MLA)
Wei, Liping…[et al.]. Numerical Study on the Mixed Convection Heat Transfer between a Sphere Particle and High Pressure Water in Pseudocritical Zone. Advances in Mechanical Engineering No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-478766
American Medical Association (AMA)
Wei, Liping& Lu, Youjun& Wei, Jin-Jia. Numerical Study on the Mixed Convection Heat Transfer between a Sphere Particle and High Pressure Water in Pseudocritical Zone. Advances in Mechanical Engineering. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-478766
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-478766