Comparison between numerically modeled and experimentally measured wave-rotor loss mechanisms

Experimental Results of Performance Tests on a Four-Port Wave Rotor

“…7) (see figure 2, which also includes a one-dimensional calculation of wave rotor performance (ref. 8). There is significant discrepancy between these two reports, and neither is very complete.…”

“…3(b)), as calculated with the onedimensional wave rotor code (see ref. 8, and the appendix for details), for one of the runs in the test series. The temperature and pressure are plotted along a passage of the wave rotor as it rotates around, passing the various ports, and returning to its original position after one complete revolution.…”

“…The advantage is that the flow corresponds to currently available computer codes for calculating wave rotor performance (ref. 8), which are limited to a single value of the ratio of specific heats. This is simultaneously its disadvantage, in that a burner would produce a gas with a ratio of specific heats more appropriate to that produced in an engine, and therefore more true to life.…”

“…It is of interest to see how this might affect performance. A test was run in which 3 m was systematically reduced below (8) which seem to fit almost as well as the least squares fits.…”

Performance Investigation of Small Gas Turbine Engines Topped with Wave Rotors

“…Since the 1990s, a large research program at NASA Glenn Research Center (GRC) collaborated by the U.S. Army Research Laboratory (ARL) and RollsRoyce Allison has initiated to develop and demonstrate the benefits of the wave rotor technology, which will be useful in future aircraft propulsion designs. [9][10][11][12][13][14][15][16] An excellent overview has been provided by Welch. 17 In 1993, using a thermodynamic approach to calculate the thermal efficiency and specific power, Wilson and Paxson 18 published a feasibility study for topping jet engines with a wave rotor.…”