Pressure Measurements in a Hydrogen Combustion Environment: Hydrogen-Air Combustion Test Series 1 and 2 in FITS (Fully Instrumented Test Site) Tank. Volume 1.

摘要

Test series 1 and 2 examined the effects of a number of parameters on hydrogen-air combustion: the initial temperature and pressure of the gases, the effect of added steam or carbon dioxide as diluents, and the percent hydrogen in air. For tests in the range of 20% to 40% hydrogen in air, recorded peak pressures were equal to adiabatic, isochroic, complete combustion (AICC) values within an experimental error of 15%. This was contrary to the results of tests at a number of other facilities. The pre-ignition temperature had a strong effect on the peak pressure, while pre-ignition pressure in the range examined had no effect on combustion pressure ratios. Calculations showed that, although the effect of dynamic head on the peak pressure was a few percent or less, interactions of the wave preceding the flame front with the flame and with the vessel walls may be apparent in the experimental records.