TY - JOUR
TI - Simulation on natural convection of Carreau fluids in a locally heated trapezoidal cavity
AU - Li Shuguang
AU - Zhuang Zhuoran
AU - Ma Xiaoyi
JN - Thermal Science
PY - 2026
VL - 30
IS - 2
SP - 1439
EP - 1451
PT - Article
AB - The laminar natural convection of non-Newtonian Carreau fluids in a trapezoidal cavity with a local heat source at the bottom is numerically investigated. A stabilized streamline-upwind/Petrov-Galerkin (SUPG) finite element algorithm is proposed, in which equal low-order finite elements are used. Effects of Rayleigh number (i.e., Ra = 104 and 105), power-law index (i.e., 0.6 ≤ n ≤ 1.4), Prandtl number (i.e., 0.1 ≤ Pr ≤ 100), and local heat source length (i.e., 0.1 ≤ η ≤ 1.0) are researched. Results show that for different power-law indexes, as Prandtl numbers increase, the convective heat transfer is enhanced; as power-law indexes increase, influences of Prandtl numbers decrease, as local heat source length increase, the convective heat transfer is enhanced.
DO - 10.2298/TSCI250601160L
ER -