Planar Head Loss dialog box (Flow/ESC/Multiphysics)

Option	Description
Name	Specify a meaningful name for the modeling object.
Label	Specify a unique numeric identifier for the modeling object.
Description	Specify a description for the modeling object.
Parameters
Type	Specifies how you specify the planar head loss.SpecifyLets you enter the value for the head loss coefficient or the pressure drop to velocity ratio.Thin Perforated PlateDefines the planar head loss using correlations for thin-walled grids of perforated sheets.Metal Wire ScreenDefines the planar head loss using the correlation for metal wire screens.Silk Thread ScreenDefines the planar head loss using the correlation for silk thread screens.For more information, see Assumptions for the planar head loss correlations.
Proportional to	Appears only when Type is set to Specify.Specifies how you specify the planar head loss for undefined planes.Dynamic PressureDefines the head loss coefficient, kloss. The head loss, ΔP, is ΔP = ½ ρ kloss V2 where ρ is the density and V is the flow velocity. You specify the value in the Head Loss Coefficient box.Approach VelocityDefines the ratio of the pressure drop to the velocity, ƒ. The head loss, ΔP, is ΔP = - ƒV where V is the flow velocity. You specify the value in the Pressure Drop to Velocity Ration box.
Orifice Geometry	Appears only when Type is set to Thin Perforated Plate.Specifies the geometry of the holes of the thin perforated plate.Sharp EdgeComputes the planar head loss using the thin perforated plate correlation for sharp edge orifices.Rounded EdgeComputes the planar head loss using the thin perforated plate correlation for rounded edge orifices and the values you specify in the Edge Radius and Orifice Hydraulic Diameter boxes.**Beveled Edge (40 — 90)**Computes the planar head loss using the thin perforated plate correlation for beveled edge orifices and the values you specify in the Plate Thickness and Orifice Hydraulic Diameter boxes.The orifice hydraulic diameter of the thin perforated plate is four times the ratio of the area to the perimeter of a single orifice.For more information, see Assumptions for the planar head loss correlations.
Free Area Ratio	Appears when the Type is set to anything other than Specify.Enter the free area ratio, which is the ratio of the sum of areas of each orifice divided by the area of the free stream.
Compute	Appears when the Type is set to anything other than Specify.Calculates the head loss coefficient based on the values you enter and displays it in the Head Loss Coefficient box.

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Planar Head Loss

Assumptions for the planar head loss correlations

Flow Boundary Condition

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Planar Head Loss dialog box (Flow/ESC/Multiphysics), Simcenter 3D 2021.1 Series

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