ML112070729

Meeting Notice with South Texas Project, Units 1 and 2 - Licensee Slides Computational Fluid Dynamics Validation Plan

ML112070729
Person / Time
Site:	South Texas
Issue date:	07/26/2011
From:	Texas A&M Univ
To:	Balwant Singal Plant Licensing Branch IV
Singal, B K, NRR/DORL, 301-415-301
Shared Package
ML112070702	List: ML112070707 ML112070729
References
TAC ME5358, TAC ME5359, GSI-191
Download: ML112070729 (5)

Text

Computational Fluid Dynamics (CFD)

Validation Plan Risk Informed GSI-191 Resolution Texas A&M University July 26, 2011 1

utline Purpose General Approach Description CFD Simulations Approach 2

Purpose To validate and assess the capabilities of CFD code on studying the debris transport and deposition in the reactor core.

To implement the model to be used for the Downstream Effect Analysis 3

General Approach Description hase 1: Data Collection etailed information about existing experimental activities conducted on fuel ndles will be collected. This will includes:

Geometry and dimensions of the experimental facility used (drawings).

This should include the tested fuel assembly type (e.g. 17x17 or others) and the spacers type.

Experimental procedure description.

Debris Preparation, Characterization, Quantities, Concentration, and Injection Method.

Boundary Conditions (flow rate, pressure, temperature).

Experimental Results (pressure, pressure drop, velocities, debris deposition).

hase 2: Model Preparation and Testing he mesh of the given geometry will be constructed and mesh sensitivity udies will be performed.

hase 3: Simulations and Results Analysis mulation results will be compared with the experimental data in order to 4

lidate the model.

FD Simulations Approach eneral Single Phase Flow Analysis.

Isothermal Conditions.

Discrete Phase Method (DPM) approach will be attempted to model the ebris inside the reactor.

oftware Candidates:

STAR-CCM+

Ansys CFD odeling:

k- Shear Stress Transport (SST) Turbulence Model Porous Media to model grid spacers and core supports 5