ZEN Interface

Solver ZEN
Type of mesh multiblock
Dimension 3D

The interface creates the following files for the Zonal Euler Navier-Stokes Flow Solver, which is a in-house code from CIRA (Centro Italiano Ricerche Aerospaziali):

File GRDFOR     (topology and geometry of the multiblock domain)
File BCDAT      (boundary conditions)
File SELECT     (selection of visiualistion data)

Creating the ZEN Input Files

Select solver

Select solver ZEN in the "Select solver" menu.

Specify boundary conditions

The following boundary conditions are supported for surfaces:


 External Boundary Conditions:

(0)
 		Symmetry Plane

(1)
 		Zero-gradient of flow variables

(2)
 		Linear-gradient of flow variables

(5)
 		X-axis symmetry

(10)
 		Euler solid wall

(11)
 		Euler solid wall excluded for force/moment calculation

(14)
 		Euler solid wall by Reiman invariants(for supersonic flows)" name

(15)
 		Navier-Stokes adiabatic solid wall" name

(16)
 		Navier-Stokes solid wall with fixed temperature

(17)
 		Navier-Stokes adiabatic solid wall with injected mass and fixed total temperature

(20)
 		General free-stream(by Riemann invariants)

(21)
 		Free-stream entrance(by Riemann invariants)

(22)
 		Free-stream exit(by Riemann invariants)

(23)
 		General free-stream(extrapolation/specification of pressure)

(24)
 		Free-stream entrance(extrapolation of pressure)

(25)
 		Free-stream exit(specification of pressure)

(26)
 		General supersonic free-stream

(27)
 		Supersonic free-stream entrance

(28)
 		Supersonic/subsonic general free stream

(30)
 		Inlet(supersonic)

(31)
 		Inlet(subsonic)

(32)
 		Outlet(subsonic)

(40)
 		Exhaust(outlet)face with M,T0/T0max,P0/P0max, I implementation

(41)
 		Exhaust(outlet)face with M,T0/T0max,P0/P0max, II implementation

(42)
 		Exhaust(outlet)face with non uniform distribution of Ptot,Ttot,Swirl

(45)
 		Inlet face with mass flow ratio

(46)
 		Inlet face with normal mach number




Internal Boundary Conditions:

(-1)
 		Periodic internal face for single block O-type/C-type grid

(-2)
 		Smooth internal face

(-3)
 		No-skewness internal face

(-4)
 		General internal face

(-6)
 		Periodic internal face with Navier-Stokes option

(-7)
 		Smooth internal face with Navier-Stokes option

(-8)
 		No-skewness internal faces with Navier-Stokes option

(-9)
 		General internal faces with Navier-Stokes option

(-10)
 		Propeller BC with Pt, Tt and Swirl specification

(-11)
 		Propeller BC with CP, CT and CS specification

(-12)
 		Propeller BC with CP, CT and Swirl specification

Edit parameters

In this menu the user can specify parameters for the ZEN SELECT file, like


zen1.gif

Write input

The user can write the ZEN files after saving the project. The translator writes the ZEN input files in the specified directory.

Limitations

The ZEN Interface accepts only multiblock structured grids. Multiblock structured grids with degenerated blocks are also supported.