Effect of pressure on structure and extinction of premixed ammonia/air counterflow flames.

What is it about?

The extinction of flames is an important consideration in combustion applications. With growing interest in carbon free fuel alternatives, ammonia has shown great promise, and thus we have quantified the extinction conditions of ammonia/air flames at atmospheric and elevated pressures up to 6 atm for a variety of equivalence ratios.

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Photo by Christian Sterk on Unsplash

Photo by Christian Sterk on Unsplash

Why is it important?

Our findings show that the extinction strain rate of ammonia/air flames increases substantially with increasing pressures. This phenomenon is particularly interesting as it mitigates one of the primary difficulties associated with ammonia/air combustion, the low extinction strain rate.