An Assessment of Pulse Detonation Engine Performance Estimation Methods Based On Experimental Results

Analytical Model for the Performance Estimation of Pre-Cooled Pulse Detonation Turbofan Engines

“…Different local equivalence ratios were specified for each case: = 0.95 for case 1; and = 1.1 for case 2, and the purge and non-purge flows are balanced to achieve a desired overall equivalence ratio. Figure 4 shows a comparison between the current model specific impulse results and data obtained by Perkins et al [21], using a quasi-one-dimensional CFD code. For reference the plot also shows a ±5% deviation bar around Perkins case 1 at OPR of 3.0.…”

“…In this section the proposed PDC model is validated against in-house CFD results and against data available in the literature [21]. The in-house CFD results are used to verify the model capability in predicting some of the most important physical phenomena of detonation in tubes.…”

“…The in-house CFD results are used to verify the model capability in predicting some of the most important physical phenomena of detonation in tubes. The comparison with results from literature allows for a more comprehensive system-level validation, where performance data are compared with results of Perkins et al [21], for three different pulse detonation systems at two different combustor and outlet conditions.…”

“…The deviation between the models is approximately 2% for the computation of the plateau properties and exhaust time. The system level implementation was also validated against literature data [16,21] for three different PDC-axial turbine/nozzle implementations, operating with propane at different OPR (compressor) and PDC conditions. The simplified engine model included a compressor, with isentropic efficiency of 90%, a PDC and an isentropic expander.…”

“…In this study, the application of the methodology is further extended to analyze turbofan aeroengines incorporating a pulse detonation core. Additional validation of the model is carried out utilizing data acquired through in-house CFD simulations, and using published data for pulse detonation cores [21].…”