GeN-Foam: a novel OpenFOAM® based multi-physics solver for 2D/3D transient analysis of nuclear reactors

Modified two-fluid model for the two-group interfacial area transport equation

This document summarizes the physical models and mathematical formulations used in the RELAP-7 code.

/pdf/relap-7-theory-manual-askcswgli2.pdf

RELAP-7 Theory Manual

Solution of the OECD/NEA neutronic SFR benchmark with Serpent-DYN3D and Serpent-PARCS code systems

Lack of local void fraction data in a rod bundle makes it difficult to validate a numerical method for predicting gas–liquid two-phase flow in the bundle Distributions of local void fraction and bubble velocity in each subchannel in a 4×4 rod bundle were, therefore, measured using a double-sensor conductivity probe Liquid velocity in the subchannel was also measured using laser Doppler velocimetry (LDV) to obtain relative velocity between bubbles and the liquid phase The size and pitch of rods were 10 and 125 mm, respectively Air and water at atmospheric pressure and room temperature were used for the gas and liquid phases, respectively The volume fluxes of gas and liquid phases ranged from 006 to 015 m/s and from 09 to 15 m/s, respectively Experimental results showed that the distributions of void fraction in inner and side subchannels depend not only on lift force acting on bubbles but also on geometrical constraints on bubble dynamics, ie the effects of rod walls on bubble shape and rise v

Void distribution and bubble motion in bubbly flows in a 4×4 rod bundle. Part I: Experiments

/pdf/trac-m-fortran-90-version-3-0-theory-manual-34ocvtvt01.pdf

C. Murray

Papers

Trac-m/fortran 90 (version 3.0) theory manual