WANG Ming, LU Yuan-li, JI Hong-hu. Numerical investigation on the influences of impingement holes on heat transfer of leading edge in lamilloy[J]. 2013, 28(10).
WANG Ming, LU Yuan-li, JI Hong-hu. Numerical investigation on the influences of impingement holes on heat transfer of leading edge in lamilloy[J]. 2013, 28(10).DOI:
According to the typical guide vane shape and the boundary conditions
numerical investigation was carried out to study the flow and heat transfer characteristics on simplified vane leading edge in lamilloy. Two arrangements of impingement holes
film holes and pin-fins
and two axis modes of impingement holes were analyzed
and re-normalization group(RNG)k-ε turbulent model was used. The results show that with the same arrangement of film holes and pin-fins
the models with different impingement holes have less than 1% of cooling flow rate varies. Besides
the model with more impingement holes and smaller diameter of impingement holes can achieve higher heat transfer coefficient and cooling effectiveness
by about 2%. The angle of impingement holes axis has little influence on heat transfer of leading edge in the same arrangement impingement holes.