Fluent, OpenFOAM ) data include calculating grid quantities ( e . g . aspect ratios, skewness, orthogonality and stretch factors ), normalizing data; Deriving flow field functions like pressure coefficient or vorticity magnitude, verifying solution convergence, estimating the order of accuracy of solutions, interactively exploring data through cut planes ( a slice through a region ), iso-surfaces ( 3-D maps of concentrations ), particle paths ( dropping an object in the " fluid " and watching where it goes ).
22.
Where u is the mean flow velocity, \ beta = g K \ cos \ zeta, ( K is the earth pressure coefficient, \ zeta is the slope ), s _ g = g \ sin \ zeta, x is the channel downslope position and x _ d is the distance from the point of the mass release along the channel to the point where the flow hits the horizontal reference datum; E _ { pot } ^ p = \ beta h and E _ { pot } ^ g = s _ g ( x _ d-x ) are the pressure potential and gravity potential energies, respectively.
