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针对轴对称进气道跨音速绕流问题的特点，用几何自适应的方法和椭圆型方程构筑了适合流场特征的贴体坐标系，并用AF3格式计算了A－27进气道物面上的压力分布。计算结果表明：几何自适应方法能够控制进气道物面上网点的疏密，给出进气进物面上网点的良好分布，从而为进气道跨音速绕流问题的准确计算奠定了基础。
Aiming at the characteristics of the transonic flow around the axisymmetric inlet, the body coordinate system suitable for the characteristics of the flow field is constructed by means of geometric adaptive method and elliptic equation. The surface of the A-27 inlet is calculated by the AF3 format The pressure distribution. The calculation results show that the geometric adaptive method can control the density of air outlets on the air entry surface and give a good distribution of the air outlets on the inlet surface, which lays a good foundation for the accurate calculation of the transonic flow around the air inlet .