Numerical Study on Reverse Flow Charcteristics in an Axial Compressor Cascade

- Journal title : Transactions of the Korean Society of Mechanical Engineers B
- Volume 24, Issue 5, 2000, pp.615-622
- Publisher : The Korean Society of Mechanical Engineers
- DOI : 10.22634/KSME-B.2000.24.5.615

Title & Authors

Numerical Study on Reverse Flow Charcteristics in an Axial Compressor Cascade

Sohn, Chang-Hyun; Longley, John Peter;

Sohn, Chang-Hyun; Longley, John Peter;

Abstract

Numerical simulation is performed with Denton's code to get pressure loss coefficients in wide range of reverse flow incidence(from -90 degree to +85 degree) for an axial compressor cascade. As a results, it is found that the pressure loss coefficient is increased with incidence and there exist critical incidence which corresponds to the maximum pressure loss coefficient. Pressure loss coefficient with bigger incidence than its critical value is decreased. The effect of increasing incidence in a cascade extremely reduce the mass flow rate by the large flow separation region. Consequently this effect reduce the portion of dynamic pressure in the total pressure loss and beyond the critical incidence the pressure loss coefficient decrease

Keywords

Surge;Reverse Flow;Axial Compressor;Critical Incidence;Cascade;

Language

Korean

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