The Westinghouse-3 (W-3 or W3) correlation for evaluation of critical heat flux (CHF)

One of the most widely used correlations for evaluation of critical heat flux (CHF) in PWR is the Westinghouse-3 (W-3) correlation. For predicting the CHF condition in a non-uniform heat flux channel, we use these two steps:

1. The uniform critical heat flux is computed with the W-3 correlation
2. The non-uniform critical heat flux distribution is then obtained by dividing the uniform critical heat flux  by the F factor.

For uniformly heated channels, the critical heat flux is given by:

Where:

The axially non-uniform heat flux is obtained by applying a corrective F factor to the uniform critical heat flux:

Where:

Source: N.E. Todreas and Mujid S. Kazimi, Nuclear Systems I – Thermal Hydraulic Fundamentals, Hemisphere Publishing Corporation, New York (1990), page 558.

Useful links:

• Material from MIT
• Material from NCSU

Umegaoka to Higashitamagawa

Yeap.. akhirnya malam ini datang juga, ini malam terakhir saya di Umegaoka dorm, besok siang saya resmi move out from here and start a new life in a new place. I have been staying here since September 25 last year, and will officially move out tomorrow on September 16 this year, 357 exciting days have passed. Ya, 357 hari (or 356 malam) sudah saya habiskan di asrama ini.

Saya pindah ke tempat kost baru di deket kampus, di daerah Higashitamagawa, paling 20 menit-an jalan kaki dari kampus.

Selamat tinggal Umegaoka, n selamat datang Higashitamagawa!

New place, new spirit! O yeah!

Free Scientific Softwares

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• JANIS (Nuclear Data Library)
• OpenFOAM (Computational Fluid Dynamics)
• OpenFEM (Finite Element Method)
• Scilab (Numerical Mathematics, Matlab-like)
• Lazarus (Integrated Development Environment, Delphi-like)
• From French EDF
• MATPACK (German C++ Library)
• VE-Suite

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