Introduction to Dissociation Front

What is/are Dissociation Front?

Dissociation Front - The simulated gas production rate based on the fractal model was lower than that of Yousif's model, the far-field pressure drop in the fractal model was slower, and the advance of the dissociation front and the transfer of the pressure field in Yousif's model was faster than that of the fractal model. ^[1] Analysis of spatially resolved spectra of the Orion Bar and other regions in the Orion Nebula shows that this process occurs in the neutral photo-dissociation region between the ionization front and dissociation front. ^[2] The MATLAB program was used to study, the laws of temperature distribution, and dissociation frontal brim during the thermal dissociation process in a hydrate reservoir. ^[3] An enthalpy-based transient thermal simulation is required to determine the dissociation front. ^[4] As metallicity decreases, H2 progressively deviates from steady state (“equilibrium”) and shows shallow abundance profiles until they sharply truncate at the photodissociation fronts. ^[5] There is a dissociation front between dissociated zone and dissociating hydrate zone during the production of NGH reservoirs by depressurization. ^[6] , CN and C$_2$H, exhibit a two-layered vertical structure and are abundant near the CO photodissociation front and near the water condensation front. ^[7]

Hydrate Dissociation Front

The critical temperature elevation for hydrate dissociation and hydrate dissociation front were determined using the simulations, which might cause wellbore stability problems in the long term. ^[1] The advance of the hydrate dissociation front is crucial to both the energy recovery process and the geological hazards prevention. ^[2] In this work, to study the movement dynamics of the gas hydrates dissociation front in a porous layer of rock, the Stefan problem solution is used. ^[3] , several MPa) until the hydrate dissociation front advances to a certain radius from the well (e. ^[4] Besides, the precise trajectory of the hydrate dissociation front in the core was predicted by the model. ^[5] Pressure depletion from one end of the core induced a hydrate dissociation front starting at the depletion side and moving through the core as production continued. ^[6] The calculation results show most of engineering parameters affects hydrate decomposition through high thermal sensitivity of hydrate formations: The direction and value of seepage will change the temperature field and the position of hydrate dissociation front. ^[7]

H2 Dissociation Front

We find that reactions of UV-pumped H2 (v>1) with S+ explain the presence of SH+ in a high thermal-pressure gas component, P_th~10^8 cm^-3 K, close to the H2 dissociation front. ^[1] Methods We detect 12 mmCRLs (including α, β, and γ transitions) observed with the IRAM 30m telescope, at ~ 25″ angular resolution, toward the H/H2 dissociation front (DF) of the Bar. ^[2]