Hybrid acoustic prediction methods have an important advantage over the current Reynolds averaged Navier-Stokes (RANS) based methods in that they only involve modeling of the relatively universal subscale motion and not the configuration dependent larger scale turbulence. Unfortunately, they are unable to account for the high frequency sound generated by the turbulence in the initial mixing lay...

In a context of growing awareness and prevalence of mental disorders, cognitive modeling has emerged as an important contribution to the study of the mind and its processes. Computational models have proved to be indispensable tools for precise and systematic simulations of cognitive processes, and have a potential application in the diagnosis and treatment of such pathologies. We propose a con...

We report further progress in the development of agglomerated multigrid techniques for fully unstructured grids in three dimensions. Following the previous studies that identified key elements to grid-independent multigrid convergence for a model equation, and that demonstrated impressive speed-up in single-processor computations for a model diffusion equation, inviscid flows, and Reynolds-aver...

This paper presents some recent validation results with velocity-based source BEM analysis program as applied to prediction of cavitation on rudder and podded propellers. The RANS solver is also applied to modelling of the rudder behind the propeller and the both BEM and RANS numerical predictions are compared with the experimental data. An example of prediction of cavitation on podded propelle...

Registered nurses working in remote areas of Australia are often called remote area nurses (RANs). RANs have traditionally used models of client consultation designed for acute presentations and episodes of care. However, presentations to health care facilities in remote Australia are more likely to be chronic, complex, multi-system and multifactorial in origin and subsequent management. This p...

The gas turbine presents significant challenges to any computational fluid dynamics techniques. The combination of a wide range of flow phenomena with complex geometry is difficult to model in the context of Reynolds-averaged Navier–Stokes (RANS) solvers. We review the potential for large eddy simulation (LES) in modelling the flow in the different components of the gas turbine during a practic...

A new wall model for LES is proposed. Unlike conventional zonal approaches, given Reynolds stresses are not imposed as the solution, but used as constraints on the SGS stress so that the given Reynolds stress closely matches the computed one only in the mean sense. Also, since LES in general outperforms RANS even at coarse resolution except very near the wall, RANS constraints are limited to th...

The integration of wireless LANs (WLANs) and 3G systems performed at core network level requires very little modifications to the current 3GPP architecture and provides a large set of benefits: seamless service integration, exploration of user mobility by applications, seamless use of different radio access network (RANs), easy availability of current services such as Short Message Service (SMS...

We propose a t rans la t ion approach f r o m moda l logics to f i rst-order predicate logic which combines advantages f r o m b o t h , the (s tandard) rela t iona l t rans la t ion and the ( rather compact) func t iona l t rans la t ion m e t h o d and avoids many of their respective disadvantages (exponent ia l g row th versus equal i ty hand l ing ) . In par t i cu la r in the app l ica t i...

This study numerically investigates the vortex-induced vibration (VIV) of an elastically mounted rigid cylinder by using Reynolds-averaged Navier-Stokes (RANS) equations with computational fluid dynamic (CFD) tools. CFD analysis is performed for a fixed-cylinder case with Reynolds number (Re) = 104 and for a cylinder that is free to oscillate in the transverse direction and possesses a low mass...