Prediction of aircraft engine noise is an important aspect of addressing the issues of community noise and cabin noise control. The development of physics based methodologies for performing such predictions has been a focus of Computational Aeroacoustics (CAA). A recent example of code development in this area is the ducted fan noise propagation and radiation code CDUCT-LaRC. Included within th...

BACKGROUND Since hemodynamics plays a key role in the development and evolution of cardiovascular pathologies, physician's decision must be based on proper monitoring of relevant physiological flow quantities. METHODS A numerical analysis of the error introduced by an intravascular Doppler guide wire on the peak velocity measurements has been carried out. The effect of probe misalignment (±10...

Understanding the factors that influence larval dispersal and connectivity among marine populations is critical to the conservation and sustainable management of marine resources. We assessed genetic subdivision among ten populations of copper rockfish (Sebastes caurinus) representing paired samples of outer coast and the heads of inlets in five replicate sounds on the west coast of Vancouver I...

A simplified semi-analytical model of vertical double U-pipe ground heat exchanger (VDUGHE) was established. The validity the established is examined by contrasting figured outcomes with experiment data, emulation results 3D numerical and calculation infinite line-source (ILSM) for different inlet boundary conditions configurations. After 1 hour, model?s relative error less than 0.32% under con...

In order to study the influence of heat dissipation outdoor unit in groove highrise building. Numerical simulation thermal environment a high-rise building is carried out. The results show that: When mean wind speed 2.7m/s, maximum inlet air temperature under full load condition about 43.3 °C, which 2 °C lower than that no condition. monsoon beneficial unit. hot rises, corner flow induced at si...

the bem is applied to the solution of the torsion problem of non-homogeneous anisotropic non-circular prismatic bars. the problem is formulated in terms of the warping function. this formulation leads to a second order partial differential equation with variable coefficients, subjected to a generalized neumann type boundary condition. the problem is solved using the analog equation method (aem)...

Various numerical boundary condition methods have been proposed to simulate various aspects of the no-slip wall condition using the Lattice Boltzmann Method. In this paper, a new boundary condition scheme is developed to model the no-slip wall condition in the presence of the body force term near the wall which is based on the Bennett extension. The error related to the new model is smaller tha...