Active cooling was considered to be one of the most effective and practical method for hydrocarbon fueled scramjet. This paper focuses on increasing the efficiency of numerical simulation of forced convective heat transfer of supercritical fluids in a tube. Adaptive Cartesian mesh was used to construct the table of thermodynamic and transport properties of n-heptane. Thermodynamically consistent bi-quintic interpolation scheme was used to calculate the properties from the table. Evaluating the properties by bi-variate interpolation on the table is much more efficient than calculating them directly from database or by solving the complex equation of state. Meanwhile, y+ adaption was used to achieve the best results with the Spalart-Allmaras turbulent model, and iso-value adaption was adopted to capture the drastic variation of specific heat near pseudo-critical point, which can lead to a better understanding of heat transfer deterioration phenomenon.
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