B. RAST-K 2.0

Introduction
The RAST-K 2.0 code is a recently developed three-dimensional two-group PWR core analysis code by UNIST CORE lab. It aims to be used by utilities to perform in-core fuel management studies, core design calculations, load follow simulation and transient analysis in neutronics. The RAST-K 2.0 code is capable of performing steady-state, quasi transient and transient calculations by solving the two-group three-dimensional neutron diffusion equation in eigenvalue or fixed source modes. 

Transverse Integrated Nodal Methods (TINMs)
- Nodal Expansion Method (NEM)
- Analytic Nodal Method (ANM)
- Semi-analytic Nodal Method (SANM)

Non-transverse Integrated Nodal Methods
- Analytic Function Expansion Nadal (AFEN) Method
- Polynomial Expansion Nodal (PEN) Method

Unified Nodal Method
- Integrate the NEM, ANM and AFEN into a single unified nodal formulation

Benchmark
IAEA PWR 3D Benchmark Problem
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그림15

그림17

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