For this regime, the stratified temperature distribution is observed only in the lower part of the calculated region, and most of the upper region is occupied by the Rayleigh-Bener convection zone
, where large vortex structures are observed.
Hence, the maximum chloride concentration accumulated near the concrete surface due to the wet/dry cycles is generated in the convection zone
where the moisture intake during wetting and loss during drying repeatedly occur .
1- broad preheat vaporization zone, 2- thin reaction zone, 3- broad convection zone
, where in the preheat zone the temperature of particles is lower than the ignition temperature; therefore, particles start to heat up until mixture temperature reaches to the ignition temperature.
"Researchers have suspected for a long time that sunspot regions are generated in the deep solar interior, but until now the emergence of these regions through the convection zone
to the surface had gone undetected," Ilonidis said.
Near the poles it sinks to great depths (all the way to the bottom of the convection zone
), returns toward the equator, and rises again.
An intriguing observation is in the convection zone
of the sun, which extends from the visible surface some 150,000 miles in.
The Sidewall Scraper creates a forced conduction zone and a forced convection zone
while both it and the mill are in operation.
The rising and falling of parcels of charged gas within the sun's convection zone
, the outer one-third of its roiling interior, generates a current, which in turn produces a magnetic field.
This implies that seismological activity inside the Sun's convection zone
triggers vibrations that create sound waves.
Lei  concluded that the depth of a convection zone
in an underground structure was approximately 5 mm to 10 mm.
The team's computer model, Predictive Flux-transport Dynamo Model, simulates the evolution of magnetic fields in the outer third of the sun's interior (the solar convection zone