Fluent Center of Pressure Report Generation

kdwoell · January 16, 2011, 16:04

I've reviewed the documentation but still unclear on some FLUENT inputs involving COP.
I'm trying to determine COP for a missile fuselage, no aero-control surfaces. There is a boatail (i.e. thrust can and nozzle but lets simplify for now)
Radius of fuselage= 12.15 inches
Fuselage overall = 390 inches

In FLUENT:
1. Reference Length and Area
Is reference length longitudinal or lateral?
Is reference area, the cross-sectional area normal to free-stream flow?

2. Fluent origin coordinates of mesh
The fuselage body is centered in the mesh on a symmetry plane. Can I assume the coordinate of the input vector for a COP report =0, e.g. y=0? Or must I somehow use a tool to determine the coordinate for the longitudinal axis of the fuselage.

kdwoell · January 18, 2011, 12:29

Any takers on this question?

Appreciate any insights,

January 16, 2011, 16:04	Fluent Center of Pressure Report Generation	#1
kdwoell New Member Kirkasaur Join Date: Dec 2010 Posts: 7 Rep Power: 14	I've reviewed the documentation but still unclear on some FLUENT inputs involving COP. I'm trying to determine COP for a missile fuselage, no aero-control surfaces. There is a boatail (i.e. thrust can and nozzle but lets simplify for now) Radius of fuselage= 12.15 inches Fuselage overall = 390 inches In FLUENT: 1. Reference Length and Area Is reference length longitudinal or lateral? Is reference area, the cross-sectional area normal to free-stream flow? 2. Fluent origin coordinates of mesh The fuselage body is centered in the mesh on a symmetry plane. Can I assume the coordinate of the input vector for a COP report =0, e.g. y=0? Or must I somehow use a tool to determine the coordinate for the longitudinal axis of the fuselage.

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January 18, 2011, 12:29		#2
kdwoell New Member Kirkasaur Join Date: Dec 2010 Posts: 7 Rep Power: 14	Any takers on this question? Appreciate any insights,