Computation for the flow and heat transfer properties of a pin fin duct

The developed one dimensional flow network model was used to simulate the characteristic of pressure, temperature and mass flow rate of trapezoidal channel with short pin-fin arrays. The pressure loss and heat transfer coefficient correlations of trapezoidal channel with pin-fin arrays were used in program. The comparison of the results of the 1D network model to the experimental results from the test rig reveals that the calculated pressure distribution and chord-wise ejection mass flow rate agreed well with the experimental data. The flow direction in pin-fin region was mainly chord-wise, but there is small radial direction flows in some region. The branches which describe radial direction flows in network are necessary.