Experimental measurements on Single-Phase Local heat transfer coefficients in $6{\times}6$ rod bundles with LSVF mixing vanes

LSVF 혼합날개를 이용한 $6{\times}6$ 연료봉 다발에서의 단상 국부적 열전달계수의 실험적 측정

The present experimental study investigates single-phase heat transfer coefficients downstream of support grid in $6{\times}6$ rod bundles. Support grid with split mixing vanes enhance heat transfer in rod bundles by generating it make turbulence. But this turbulence is confined to short distance. Support grid with LSVF mixing vanes enhanced heat transfer to longer distance. The corresponding Reynolds number investigated in the present study is Re=30,000. The heat transfer coefficients are measured using heated and unheated copper sensor.