Computational Fluid Dynamics (CFD) has been widely used in pressure drop/hydraulic loss calculations in many industries, including the aerospace and turbo-machinery industry as well as in the nuclear power industry. During the past 30 years, a significant amount of time and effort have been spent in benchmarking the CFD tools and models against test data in aerospace and turbo-machinery industr...

Computational fluid dynamics (CFD) is a popular tool in the water industry for assessing ultraviolet (UV) reactor performance. However, due to the size of open-channel-type UV reactor systems, the CFD model requires significant computational time. Thus, most evaluations have been conducted using very simplified models. In order to ensure the reliability of this simplified CFD model, precise num...

Evaluation of Various Turbulence Models in Predicting Airflow and 1 Turbulence in Enclosed Environments by CFD: Part-1: 2 Summary of Prevalent Turbulence Models 3 4 Zhiqiang Zhai Zhao Zhang Wei Zhang Qingyan Chen 5 Member ASHRAE Student Member ASHRAE Member ASHRAE Fellow ASHRAE 6 7 Air distributions in enclosed environments are crucial to thermal comfort and air quality. 8 Computational fluid d...

Advances in computer speed and availability of user friendly software has made computational fluid dynamics (CFD) a cost effective compliment and at times alternative to physical modeling in the field of civil engineering hydraulics. The use of CFD is wide spread in mechanical and aerospace engineering, however, in the field of civil engineering and particularly in hydraulics, there is minimal ...

OBJECTIVE This study aimed to predict recurrence after coil embolization of unruptured cerebral aneurysms with computational fluid dynamics (CFD) using porous media modeling (porous media CFD). METHOD A total of 37 unruptured cerebral aneurysms treated with coiling were analyzed using follow-up angiograms, simulated CFD prior to coiling (control CFD), and porous media CFD. Coiled aneurysms we...

Accurate prediction for a self-propelled ship is a challenging task for CFD computation. While turbulence modeling is a crucial issue, more physical modeling is involved in a propeller simulation: transition, cavitation, turbulence, ventilation, etc. More advanced numerical technique is also required to capture very small scale flow motion such as tip vortex. The ISIS-CFD RANSE code has been fu...

Ñ State of the Art of Multi-Dimensional Modeling of Engine Reacting Flows Ñ An overview is provided of the state of art and future prospects for the use of CFD simulation in engine analysis and design. The aspects covered include geometry handling and mesh generation, numerical solvers, mathematical modeling of key physical phenomena, exploitation of parallel computers and industrial applicatio...

A hybrid modeling capability has been developed by coupling a CFD code to a DSMC code using a one-way coupled interface surface. Using a unique toolkit, named AEGIS, these surfaces can be generated for complex, arbitrary 3D shapes. The status of this technology development is described. Modifications that include non-equilibrium internal energy modeling in the CFD code and solid particulates fo...

In the early design phase of automotive sector, the flow field around the vehicle is important in decision making on design changes. It would consume a lot of money and time for multiple prototypes development if adopt traditional testing method which is wind tunnel test. Thus, numerical method such as Computational Fluid Dynamics (CFD) simulation plays an important role here. It is very often ...

Abstract: Two modeling approaches, the scaling-law and CFD (Computational Fluid Dynamics) approaches, are presented in this paper. To save on experimental cost of the pilot plant, the scaling-law approach as a low-computational-cost method was adopted and a small scale column operating under ambient temperature and pressure was built. A series of laboratory tests and computer simulations were c...