... loading PTS conditions due to the emergency cooling during small break loss of coolant accident (SBLOCA) transients. This paper presents the research and development program started at EDF on the computational fluid dynamics (CFD) determination of the cooling phenomena of a PWR vessel during a pressurized...

...Xue Guan Song; Lin Wang; Young Chul Park A spring-loaded pressure safety valve (PSV) is a key device used to protect pressure vessels and systems. This paper developed a three-dimensional computational fluid dynamics (CFD) model in combination with a dynamics equation to study the fluid...

... of the unsteady flow model (UFM) with computational fluid dynamics (CFD). The CFD model employed solves the Reynolds averaged Navier–Stokes equations for unsteady turbulent flow and is cast in an arbitrary Lagrangian–Eulerian form to handle any motion associated with tubes. The CFD solution provides time domain...

... the transient temperature distributions in the wall of an actual PWR pressurizer surgeline with a complex geometry of three-dimensionally bent piping, three-dimensional transient computational fluid dynamics (CFD) calculations involving the conjugate heat transfer analysis are performed for the PWR pressurizer...

... computational fluid dynamics corrosion electrochemistry failure (mechanical) film flow flow simulation microfluidics multiphase flow pipe flow pipes surface cracks turbulence wear corrosion dynamic simulation multiphase flow protective films modeling fluid-structure interaction...

...Jong Chull Jo; Dong Gu Kang; Kyung Wan Roh Two-phase flow fields inside feeder pipes of a CANada Deuterium Uranium (CANDU) reactor have been simulated numerically using a computational fluid dynamics (CFD) code to calculate the shear stress distribution, which is the most important factor...

...Jong Chull Jo; Woong Sik Kim; Chang-Yong Choi; Yong Kab Lee This paper addresses the numerical simulation of two-phase flow heat transfer in the helically coiled tubes of an integral type pressurized water reactor steam generator under normal operation using a computational fluid dynamics code...

... flow is limited, and experimental testing can be cost prohibitive. The capability of using computational fluid dynamics is a test to determine its viability for determining performance coefficients. The flow field, resultant force, and aerodynamic torque on a symmetric disk butterfly valve are studied...

... simulation computational fluid dynamics finite element analysis wakes vibrations damping stress analysis aluminium steel shock waves The complex dynamic pipe stresses created during water hammer are not well understood, even though the water hammer pressure transients causing the stresses...

... of the carbon steel parts. 17 05 2006 20 11 2006 17 07 2005 21 07 2005 heat exchangers computational fluid dynamics waste heat waste recovery heat recovery pipes carbon steel temperature distribution heat transfer high-temperature techniques The waste heat exchanger...

...Ken Uchida; Rie Sumiya; Tadashi Murofushi; Masakazu Jimbo Steady-state Eulerian analysis on thermal simulation of welds using moving coordinates is known as a very computationally efficient method. This paper presents a method of Eulerian analysis that uses commercial computational fluid dynamics...

... examples shown are for positive displacement machines, axial turbines, and steam-generator tube-bundle vibrations. The advances in mesh technology, including deforming meshes with nonconformal sliding interfaces, open up this new field of application of computational fluid dynamics and mechanical analysis...

... efficiency across a wide range of production conditions. The model presented is divided into two main parts, the single-phase flow-field solution and the bubble-tracking method. The first part of the model solves the single-phase liquid flow field using the computational fluid dynamics approach...

... Interaction in a High Velocity Vapor Jet Condensing in a Coaxial Water Flow ,” ASME J. Heat Transfer , 3 , pp. 226 – 230 . fission reactor cooling heat transfer flow computational fluid dynamics nuclear engineering computing fission reactor design condensation fission reactor kinetics...

... TECHNOLOGY . Manuscript received by the PVP Division August 16, 2004; revision received September 9, 2004. Review conducted by: S. Zamrik. 16 August 2004 09 September 2004 15 03 2005 two-phase flow computational fluid dynamics stratified flow pumps drag impellers pressure...

... that calculates the package response to the Isis-3D CFD fire model. ISIS-3D combines computational fluid dynamics with reaction chemistry and thermal radiation models to rapidly estimate the heat transfer from a fire. In the current work, parameters used in the fire model were determined. Simulations were...

... is being performed with a commercial computational fluid dynamics (CFD) code— FLUENT 6.1. The modeling has attempted to describe the results of flow visualization experiments performed in a transparent feeder pipe with air-water mixtures at temperatures below 55 ° C . The CFD code solves two sets...

...Miles Greiner; Ahti Suo-Anttila The Isis-3D computational fluid dynamics/radiation heat transfer computer code was developed to simulate heat transfer from large fires to engulfed packages for transportation risk studies. These studies require accurate estimates of the total heat transfer...

... 2004 computational fluid dynamics flow instability damping pressure vibrations mechanical stability confined flow Up to this time, some research has been conducted on natural frequencies and flow-induced vibrations of the bellows due to internal fluid flow. Jakubauskas and Weaver...

... good results; however, they often involve high costs as they rely on specific modelings fitted with experimental data. Owing to recent improvements in computational fluid dynamics, numerical simulation of flow-induced structure vibration problems is now practicable for industrial purposes. As far...