The finger seal was treated as porous medium. The pressure gradient was regarded as the source term of momentum equation. The coefficient in source term was confirmed by experimental results. A porous medium model for the leakage through finger seal was put forward by combining with the finer seal configuration. The computational results showed a good agreement with the experimental results

the model was proved to be practicable for simulating the leakage of finger seal. Flow field computational results show that the influence of the porosity of finger contact pad on leakage is great

and the pressure grads in the finger seal are mainly distributed below the inner diameter of aft cover plate.