The neutronic performances of the MEGAPIE target will be studied using fission micro-chambers specially designed to stand the severe irradiation conditions of flux and temperature.
As a consequence of this peculiarity, we demonstrate using linear analysis that in 3-D there exist critical conditions of flux at which self-similar evolution occurs.
They conclude that more detailed observational data will throw light on the physical conditions of flux tubes just before their emergence to the photosphere.
It should be also noted that the energy flux given by (18c) satisfies the boundary condition of no flux through coastlines [using (17c)], an issue not considered in previous studies for the pseudomomentum flux.
On the basis of a global 3D-model of the dynamics and chemistry of the middle atmosphere (0 150 km), we show that this picture is wrong under the condition of a flux through the domain which corresponds to the commonly accepted value of the hydrogen escape flux.
Unfortunately, these flux tubes did not agree exactly with the observations, i.e., the boundary condition of the flux tube deviated greatly from the observations.
They complement previous studies with the condition of heat flux imposed on the disk.
The unknown coefficients in the FRFs are assembled in a linear system of matrix equations according to the thermal and mechanical loadings on surface and continuity condition of heat flux, temperature, displacement and stresses at each interface; then the coefficients are solved and expressed recursively.
and imposing the null-gradient condition [41], ∇ r ρ n (r, ξ) = 0, in accordance with the celebrated Bader condition of electronic flux of atoms-in-molecules [9, 42], to yield: r max = n ξ (25c).
The initial value of variables was given as their equilibrium with a random fluctuation of 1.0%, and numerical simulations of the reaction-diffusion dynamics were imposed on the boundary condition of zero flux.
Here, we assume a very similar type of scenario, i.e. optimal growth in the initial condition and minimization of flux adjustment determining the final condition.
