Compressible Flow Subroutine Library
Programming Reference Manual
Version 1.0 DD-00008-110
3.9.6 arfqisa - DeLaval isentropic flow relations given A/A *
SUBROUTINE AR09AE(G,A,IS_SUB,RESULT,IERR)
  DOUBLE PRECISION G, A, RESULT(5)
  LOGICAL IS_SUB
  INTEGER IERR

Compute the DeLaval nozzle isentropic relations given the critical area ratio A/A * .

Performance
Iterative

Arguments




Argument Intent

Description




g in

Specific heat constant γ .

a in

Critical area ratio    *
A/A > 1  .

is_sub in

Whether the mach number correspdonding to A/A* is assumed to be sub- or super- sonic.

result out

Array with result properties as described in  7.

ierr out

(optional) Return status code




Status codes

-1

Specific heat ratio γ≤ 1  .

-2

Computed M out of range.

-3

Given    *
A/A out of range.

-4

Iterative solver failed.