# udfHasTurb()

Does this problem contain a turbulence equation?

## Syntax

turbFlag = udfHasTurb( udfHd ) ;

## Type

AcuSolve User-Defined Function Global

## Parameters

- udfHd
- The opaque handle (pointer) which was passed to the user function.

## Return Value

- turbFlag (integer)
- Flag indicating whether or not this problem has turbulence equation(s). The return value is a flag indicating whether or not this problem has turbulence equations:
- 0
- No
- 1
- Yes

## Description

This routine determines if this problem contains a turbulence equation. For
example,

```
Integer turbFlag ;
...
turbFlag = udfHasTurb( udfHd ) ;
if ( turbFlag == 1 ) {
/* Logic if turbulence equations exist */
...
)
```

## Errors

This routine expects a valid udfHd.