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Publications (9)
Axial compressors have inherently unsteady flow fields because of relative motion between rotating and stationary airfoil rows. This relative motion leads to viscous and inviscid interactions between blade rows. As the number of stages increases in a turbomachine, the buildup of convected wakes can lead to progressively more complex wake/wake and w...
The aerodynamic design method for turbomachine blades reported in part 1 (Dang, T., and Isgro, V.,"Euler-Based Inverse Method for Turbomachine Blades Part 1: Two-Dimensional Cascades," AIAA Journal, Vol. 33, No. 12, 1995, pp. 2309-2315) is extended to three dimensions. In this inverse method, the blade pressure loading (i.e., pressure difference be...
The practical utility of a three-dimensional inverse viscous method is demonstrated by carrying out a design modification of a first-stage rotor in an industrial compressor. In this design modification study, the goal is to improve the efficiency of the original blade while retaining its overall aerodynamic, structural, and manufacturing characteri...
The practical utility of a 3D inverse viscous method is demonstrated by carrying out a design modification of a first-stage rotor in an industrial compressor. In this design modification study, the goal is to improve the efficiency of the original blade while retaining its overall aerodynamic, structural and manufacturing characteristics. By employ...
The flow in turbomachine blade passages is three-dimensional (3D), viscous and unsteady. Each of these effects strongly influences its performance. Thus there is a need to develop a design tool (inverse methods) that accounts for all of these effects and gives the designer control over some flowfield and structural characteristics. The current inve...
A new axisymmetric throughflow method for analyzing and designing turbomachines is proposed. This method utilizes body-force terms to represent blade forces and viscous losses. The resulting equations of motion, which include these body-force terms, are cast in terms of conservative variables and are solved using a finite-volume time-stepping schem...
