Using two-dimensional compressible Euler equations

the flow field in continuously rotating detonation combustor (CRDC) with equivalent hydrogen/air was numerically analyzed. The effects of fuel inflow total pressure at different azimuthal sizes of CRDC on pressure ratio

combustion efficiency

volume heat release rate and NOx emissions were examined. The results show that with the increase of fuel inflow total pressure

when azimuthal size of CRDC is 150mm

pressure ratio remains unchanged

and combustion efficiency and volume heat release rate grow linearly; when azimuthal size of CRDC is 250mm

detonation wave number redoubles

and volume heat release rate still grow linearly

but pressure ratio and combustion efficiency turn down due to the increase of fuel inflow total pressure. Compared with conventional isobaric combustor

CRDC has a higher performance. In the calculation region of 250mm×40mm

the pressure ratio goes up to 2.706

greatly improving the potential power of gas; volume heat release rate is 2.18 ×1010W/m3; NOx emissions is 0.692mg/m3

thereby ensuring low emissions requirements.