Zobrazeno 1 - 10
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pro vyhledávání: '"G. P. Greyvenstein"'
Autor:
H.J. van Antwerpen, G. P. Greyvenstein
Publikováno v:
Nuclear Engineering and Design. 238:2985-2994
Radiation heat transfer is a major mode of heat transfer in high temperature gas-cooled reactors (HTRs) because of the high operating temperatures. It is, however, a difficult phenomenon to calculate in full detail due to its geometrical complexity.
Publikováno v:
Nuclear Engineering and Design. 236:491-501
Regulatory requirements prescribe extensive verification and validation (V&V) of computer codes that are used in the design and analysis of accident conditions in nuclear plants. Flownex is a dynamic systems CFD code used as the primary thermal-fluid
Autor:
G. P. Greyvenstein
Publikováno v:
International Journal for Numerical Methods in Engineering. 53:1127-1143
Existing methods for the analysis of transient flows in pipe networks are often geared towards certain types of flows such as gas flows vis-a-vis liquid flows or isothermal flows vis-a-vis non-isothermal flows. Also, simplifying assumptions are often
Publikováno v:
International Journal of Energy Research. 25:291-317
The largest percentage of the sanitary hot water used in South African buildings is heated by means of direct electrical resistance heaters. This is one of the major contributing factors of the undesirable high morning and afternoon peaks imposed on
Autor:
G. P. Greyvenstein, D. P. Laurie
Publikováno v:
International Journal for Numerical Methods in Engineering. 37:3685-3705
SUMMARY The most popular pipe network algorithms fall into three categories depending on whether node, loop or element solving equations are considered. Although node methods have some advantages over the other two methods, some authors have found th
Autor:
G. P. Greyvenstein
The objective of this paper is to model the steady-state and dynamic operation of a pebble-bed-type high temperature gas-cooled reactor power plant using a system computational fluid dynamics (CFD) approach. System CFD codes are 1D network codes with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67153c9fa7ec8b035e692e2024927ac9
https://hdl.handle.net/10394/2575
https://hdl.handle.net/10394/2575
Publikováno v:
Fourth International Topical Meeting on High Temperature Reactor Technology, Volume 1.
Nuclear reactor behaviour is determined by the relation between the temperature and the effective neutron reaction cross-sections of the materials in the reactor core. In order to accurately calculate the material temperatures, heat transfer to the r
Autor:
G. P. Greyvenstein
Publikováno v:
ASME 2006 Power Conference.
The basic approach with the design of power plants is to first carry out a thermodynamic cycle analysis and then to vary certain cycle parameters such as the overall pressure ratio in order to determine the optimum or design point condition. One woul
Autor:
G. P. Greyvenstein, P. G. Rousseau
Publikováno v:
Energy and the Environment ISBN: 9789401059435
The concept of a heat pump, where heat is transferred from a low temperature to a high temperature via a vapour compression cycle that requires power input, is widely applied in the South African commercial sector. The main application is in the form
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cdeec4b291ab2f050a6a04884a42916d
https://doi.org/10.1007/978-94-011-4593-0_22
https://doi.org/10.1007/978-94-011-4593-0_22
Publikováno v:
International Journal of Nuclear Energy Science and Technology. 1:44
The system CFD code Flownex is used to simulate the transient behaviour of complete thermal-fluid systems such as the Pebble Bed Modular Reactor. In the context of this system simulation, the complexities in modelling the reactor heat transfer is dis