The phrase "average flow direction" is correct and usable in written English.
It can be used in contexts related to fluid dynamics, environmental science, or any field where the direction of flow is being analyzed or discussed.
Example: "The average flow direction of the river changes seasonally due to rainfall patterns."
Alternatives: "mean flow direction" or "typical flow direction".
Different arrays are considered, based on the degree of staggering of fibres with respect to the average flow direction.
Calculation of these functions in the streamwise and in the spanwise directions with respect to the average flow direction is presented here.
The significant change of the average flow direction occurs well inside the statistical bow shock crossing determined from plasma waves data (Phobos 2) and magnetic field and electron data (MGS spacecraft).
This is done by application of a weighted average equation in which different weights are assigned to flow parallel and perpendicular to 1D fibre arrangements, depending on the fibre orientation and average flow direction.
The velocities u is decomposed into stream-wise components u s, which parallels with the vertically averaged flow direction, and cross-components u c, which are perpendicular to the vertically averaged flow direction, i.e., u = u s +u c.
Near the vortex center, the direction of the secondary flow near the bed is 90° to the right of the vertically averaged flow direction (cf. Figs. 5(b) and 12).
Thus, the vertically integrated mass of suspended sediment advected owing to the secondary flow toward the vortex center is expressed as, where erightward is a unit vector with 90° to the right of the vertically averaged flow direction.
To compute the average change in flow speed and average change in flow direction only data from the region of the cell outline that was common between two successive frames was used.
Flow rate, or mean flow, is the average flow in one direction (or for unidirectional flow, average flow above the mean) and is related to stroke volume, except that flow rate is affected by heart rate; to rough approximation, stroke volume and flow rate are related by stroke volume = flow rate/heart rate/2.
Table 4 Average wind velocity of North Hoyle OSWF Wind flow direction Average wind velocity (p.u).
Table 5 Average wind velocity of Horns Rev OSWF Wind flow direction Average wind velocity (p.u).
