Comparison of Simulated and Measured Arnold Engineering Development Center High Performance Demonstration Experiment (AEDC/HPDE) MHD Generator Performance

摘要

The MHD generator performance of the High Performance Demonstration Experiment (HPDE) has been analyzed, using the ANL quasi-three-dimensional computer model. Calculations based on the operating conditions of Tests Nos 10 and 14 indicate that for both tests, the trends and magnitudes of the measured data of various electrical and gasdynamic variables are in good agreement with the analytical predictions. The variation of the channel performance as a function of the channel wall temperature, surface roughness, load factor, and magnetic field strength is examined, and numerical examples are given. Performance maps showing channel enthalpy extraction versus isentropic efficiency are generated for range of magnetic field strengths, loading parameters, and electrode surface temperatures. The effect of operating parameters on the boundary layer voltage drops is presented for both cold and hot electrodes walls. A diagnostic data analysis (DDA) procedure has been developed for further verification of the accuracy of the predictions of the quasi-three-dimensional model. In this procedure, the experimental data are used to compute the gasdynamic flow parameters and the boundary layer voltage drop characteristics in terms of and <1/sigma>. The results of this DDA procedure and those of the quasi-three-dimensional model are in good agreement. (ERA citation 06:028827)