|
Computational Fluid Dynamics and its applications
|
Issue Ordering Page | Top Journal Page | Home | cfdSHOP | Contact us
The use of PHOENICS to simulate three-dimensional effects in
natural-draught cooling towers
D. Radosavljevic and D.B. Spalding
pp 409-458
Abstract.
Implementation of an Algebraic Stress Model for Turbulence
Generated Secondary Currents
R. Larsson
pp 459-481
Abstract.
Calculation of Two-Dimensional Turbulent Flow in A PC cabinet
N.S. Vlachos
pp 482-501
Abstract.
Numerical Simulation of Continuum Mixture Model Equations for
Solid-Liquid Phase Change in Binary Systems
C. Prakash
pp 502-515
Abstract.
The use of PHOENICS to simulate three-dimensional effects in natural-draught cooling towers
D. Radosavljevic and D.B. Spalding,
PHOENICS Journal of CFD & its applications, volume 1, No4, pp 409-458
In most circumstances, the performance of natural-draught cooling towers is influenced to some extent by the presence of a cross-wind; but methods for predicting the influence quantitatively have been absent.
The authors have therefore constructed a three-dimensional computer model of such a cooling tower, with the aid of the PHOENICS general-purpose computer program, and have used it to predict the behaviour of specific cooling tower.
Performance perdictions are given for the cases of lower and stronger cross-winds, for different tower geometries. Possible influence of the improvements in the tower shape on the overall performance is analyzed. Qualitative comparison with some measurements is presented.
The three-dimensional modelling in a single computer code of the internal and external aerodynamics, and of the transport processes of heat and water vapour, allows considerable insight to be gained into the process. This is enhanced by the use of computer-graphics display techniques.
Go to Top | Order Issue | Main Journal Page
Implementation of an Algebraic Stress Model for Turbulence Generated Secondary Currents
R. Larsson,
PHOENICS Journal of CFD & its applications, volume 1, No4, pp 459-481
An algebraic stress model of turbulence has been implemented in PHOENICS. Simulations of flow in a square duct have been made. The results show that the turbrlence induced secondary currents are reasonably well predicted. Isovels of stream-wise velocity also show fair agreement with experimental data.
Go to Top | Order Issue | Main Journal Page
Calculation of Two-Dimensional Turbulent Flow in A PC cabinet
N.S. Vlachos,
PHOENICS Journal of CFD & its applications, volume 1, No4, pp 482-501
A demonstration calculation of isothermal turbulent flow in the cabinet of a personal computer is presented. The geometry has been simplified to represent a two-diamensional flow configuration. The general-purpose CFD computer code PHOENICS is used to solve the time-averaged Navier-Stokes equations of fluid motion. Two cases are presented corresponding to fixed velocity at the inlet with fixed pressure at the outlet and fixed pressure at the inlet with fixed velocity at the outlet. The predicted velocity and presuure fields of both cases appear to be qualitatively correct. The air flow rates through the various components of the PC cabinet are also presented.
Go to Top | Order Issue | Main Journal Page
Numerical Simulation of Continuum Mixture Model Equations for Solid-Liquid Phase Change in Binary Systems
C. Prakash,
PHOENICS Journal of CFD & its applications, volume 1, No4, pp 502-515
The purpose of this technical note is to provide the PHOENICS Q1 and GROUND listings related to a recent study by Prakash and Voller on the subject of numerical solution of continuum mixture model equations for analysing solid-liquid phase change problems in binary materials. Since a detailed description of the problem is available, this note has been kept very brief and only the salient features of the problem have been highlighted.
Go to Top | Order Issue | Main Journal Page