| 摘要 |
The invention relates to a method for simulating the movement behaviour of a fluid (16; 17) in a closed, moving container (14; 15), the container having a capacity (VT) and the fluid (16; 17) having a volume (VL), wherein a temporally variable or likewise constant disturbance affects the container, whereby the container is deflected from an idle position by an angle fo situated in a disturbance plane (E) having an axis of the container. Said method comprises the following steps carried out in a computing unit: a) determining the potential movement path of the center of gravity (CoG) of the volume (VL) of the fluid as an elliptical trajectory situated in the disturbance plane and having the half-axes according to formula (I), wherein A represents the largest cross-sectional area of the container perpendicular to the disturbance plane (E); b) determining the trajectory data of the expected disturbance-induced movement of the center of gravity (CoG) as a function of time (t) according to the differential equation (II) which includes - the excitation: according to (III), - the force of gravity g, - the tangential angle d calculated according to (IV), in which xE and zE are the coordinates of the center of gravity (CoG) on the elliptical trajectory having the half-axes a and b, - a fluid-specific damping term L - and the distance R between the center of gravity (CoG) and the center (M) of the elliptical trajectory, R being calculated according to (V); c) determining the expected forces of mass (F) of the fluid (16; 17), engaged in the center of gravity (CoG), as a function of time (t) according to the equation: F = m · g · cosd, which includes - the fluid mass m, - the force of gravity g and - the tangential angle d in xE and zE; d) transmitting the determined trajectory data of the expected disturbance-induced movement of the center of gravity (CoG) and the expected forces of mass (F) engaged in the center of gravity (CoG) from the first computing unit to a processing unit arranged downstream thereof. |
