A global model for flame pulsation frequency of buoyancy-controlled rectangular gas fuel fire with different boundaries

Pool fire burning characteristics and risks under wind-free conditions: State-of-the-art

“…Many researchers have studied the pulsation phenomenon in pool fire because it affects the burning process and reflects the flow conditions of pool fire [80][81][82]. The frequency of pulsation was well-fitted by a modified Strouhal number: St = fD/V, and Froude number, Fr = V/(gD) 1/2 , which considers the frequency as a function of the inverse root of the source diameter, f ∼ D 1 2 .…”

“…On the other hand, recent studies found that different aspect ratios of burners and boundary conditions will affect the pulsation behavior, such as sidewall and corner surroundings. Huang [80] considered the hydraulic diameter as the characteristic length scale to modify the pulsation model. The finals showed that convection between the buoyant plume gas and the stagnant surrounds was turbulent and declined when the sidewall and corner appeared.…”

Oscillation frequency measurement of gaseous diffusion flames using electrostatic sensing techniques

“…The degree of flame oscillation in the aforementioned characteristics is represented by the oscillation frequency, which is closely related to the combustion conditions and flame stability [4]. Oscillation may exist even with steady supplies of fuel and oxidizer, and cause the flame failure or flame extinction under extreme conditions [5].…”

Flame-splitting mechanism of buoyancy-controlled diffusion plumes generated by a rectangular fire source attached to a sidewall

“…The sidewall effect has a considerable influence on the flame characteristics of nearby fires [16][17][18][19][20][21]. Fan et al [17] conducted many experiment to study the flame characteristics of heptane pool fires with different aspect ratios and orientations in a channel under the effect of sidewall effect, finally, an integral flame length model considering both sidewall effect and fuel shape is proposed.…”