(1) When the flow rate is constant, the axial average and maximum velocities increases linearly and exponentially, respectively, with the increase of ε.
This maximum possible velocity increases with the power of transmission.
The energy consumption of the on-demand protocols increases as the maximum node velocity increases.
The depth of the boundary layer formed on the impinging surface decreases, while the maximum radial velocity increases with Reynolds number below a critical, Recr, value.
Results common to all three lattices are (1) the BGK relaxation time τ must be greater than 12 corresponding to positive shear viscosity, (2) there exists a maximum stable mean velocity for fixed values of the other parameters, and (3) as τ is increased from 12 the maximum stable velocity increases monotonically until some fixed velocity is reached which does not change for larger τ.
With increasing distance from the ignition source, the peak overpressure formed by shock wave, the flame propagation speed, the maximum combustion rate, the maximum density, and the maximum gas velocity increased gradually, but the peak overpressure formed by sonic compression wave and the maximum temperature decreased gradually.
In this investigation, a total of 13 shapes of the casing were tested, and the results suggest that the optimal variant ensures a maximum axial velocity increase in the active transversal section of the casing by a factor of up to 3.25.
Besides, with the increase of mass flow rate, the maximum temperature and average temperature tend to decrease, but the temperature uniformity, pressure drop and maximum velocity tend to increase.
It is found that maximum laminar flame propagation velocity increases with tube diameter.
