This work suggests a study of small motions of system of anideal-relaxing fluids which rotate ina limited space. First, we present the problem and reducethe initial boundary value problem that describe it to Cauchy problem for an ordinary differentia
l equation of the second order form in Hilbert space. This allows us to prove the unique solvability theorem.
This Work suggests a study of small motions of system of capillary viscous fluids in rotation vessels ,i.e: to prove the unique solvability theorem of the initial boundary value problem that describe these motions. For that we reduced to Cauchy probl
em that has the form:
Where is a continuous function with values in the Hilbert space E, A is an operator on E,
By using Functional analysis methods (Orthogonal projector, Operator approach,…)
