Elevation Element

Cross-section shape allows user to specify geometry in three different ways;

(-1): Area is not set

(1): Arbitrary shape with Area

(2): Circular with Diameter

User defined exit area used to calculate exit conditions.

Required if CS_SHAPE flag is 1.

User defined exit diameter of elevation element used to calculate exit conditions.

Required if CS_SHAPE flag is 2.

Loss mode type flag:

(1): Cd – Compressible Loss Coefficient

(2): K – Incompressible Loss Coefficient

Cd – Compressible Loss Coefficient

Or

K – Incompressible Loss Coefficient

Cd or K-Loss Value.

Input Limits:

0 < CD < 1

K>0

Reference rotor index for user-supplied swirl.

Stationary (Database Value = 0.0)

Rotor 1 (Database Value = 1.0): Points to general data Shaft 1 Rotor Speed.

Rotor 2 (Database Value = 2.0): Points to general data Shaft 2 Rotor Speed

Rotor 3 (Database Value = 3.0): Points to general data Shaft 3 Rotor Speed

Rotates with Air (database Value = -1.0): Element RPM is based on upstream fluid RPM

Radial distance between the orifice inlet center and the engine centerline.

(Do not use zero unless the orifice is not rotating)

Radial distance between the orifice inlet center and the engine centerline.

(Do not use zero unless the orifice is not rotating)

Angle between the element centerline at the entrance of the element and the reference direction.

If the element is rotating or directly connected to one or more rotating elements, the reference direction is defined as parallel to the engine centerline and the angle is the projected angle in the tangential direction. Otherwise, the reference direction is arbitrary but assumed to be the same as the reference direction for all other elements attached to the upstream chamber.

THETA for an element downstream of a plenum chamber has no impact on the solution except to set the default value of THETA_EX.

(See also THETA_EX)

Angle between the element centerline at the entrance of the element and the THETA direction. (spherical coordinate system)

PHI for an element downstream of a plenum chamber has no impact on the solution except to set the default value of PHI_EX.

(See also PHI_EX)

Exit K Loss:

Axial (K_EXIT_Z)

Tangential (K_EXIT_U)

Radial (K_EXIT_R)

Head loss factors in the Z, U, and R directions based on the spherical coordinate system of theta and phi. (Default value provides no loss).

Refer General solver theory sections for more details about this input

Angle between the orifice exit centerline and the reference direction.

THETA_EX is an optional variable to be used if the orientation of the element exit differs from that of the element inlet.

The default value (THETA_EX = -999) will result in the assumption that THETA_EX = THETA.

Other values will be interpreted in the manner presented in the description of THETA.

Angle between the orifice exit centerline and the THETA_EX direction.

PHI_EX is an optional variable to be used if the orientation of the element exit differs from that of the element inlet.

The default (PHI_EX = -999) will result in the assumption that PHI_EX = PHI.

Other values will be interpreted in the manner presented in the description of PHI.

This tells the solver how to interpret QINHEAT.

0: Adiabatic

1: Heat addition

2: Head addition proportional to element mass flow rate

3: Delta Total temperature

4: Fixed Fluid Total temperature at exit

Heat Added – if Heat Mode =1 or 2

Delta.T – if Heat Mode =3

Fixed total temperature at exit = 4

The user can choose which solution algorithm to use.

1: Compressible Gas

2: Incompressible Gas

3: Incompressible liquid

FLOWS:

FLOW: %WREF & MASSFLOWRATE

Portion of Ustrm Chamb. Dyn. Head Lost

(Usually an echo of the user input unless modified inside Flow Simulator.)

Axial (K_EXIT_Z)

Tangential (K_EXIT_U)

Radial (K_EXIT_R)

Exit K Loss

(Usually an echo of the user input unless modified inside Flow Simulator.)

Tangential Angle

(Usually an echo of the user input but converted to radians.)

Radial Angle

(Usually an echo of the user input but converted to radians.)

RPM (Rotor index)

(Usually an echo of the user input unless modified inside Flow Simulator.)

Radius

(Usually an echo of the user input unless modified inside Flow Simulator.)

Radius

(Usually an echo of the user input unless modified inside Flow Simulator.)

Inlet Height

(Usually an echo of the user input unless modified inside Flow Simulator.)

Exit Height

(Usually an echo of the user input unless modified inside Flow Simulator.)

Cross-sectional area.

(Usually an echo of the user input unless modified inside Flow Simulator.)

Discharge coefficient.

(Usually an echo of the user input unless modified inside Flow Simulator.)

Head loss coefficient.

Calculated from the discharge coefficient using equation

Exit area used for calculating exit conditions of the orifice element. This output is only printed when an exit area is used (EXIT_AREA>0). A default value of 0 has no effect on exit conditions.

(Output is an echo of the user input.)

Static pressure relative to the rotational reference frame (i.e. rotor) at the restriction exit.

Limited by critical pressure ratio for supersonic flows.

Heat input.

Positive values indicate heat added to the fluid; negative values indicate heat removed.