---
title: "turbulenceField(smoothness:animationSpeed:)"
framework: uikit
role: symbol
role_heading: Type Method
path: "uikit/uifieldbehavior/turbulencefield(smoothness:animationspeed:)"
---

# turbulenceField(smoothness:animationSpeed:)

Creates and returns a field behavior object that applies noise to an item in motion.

## Declaration

```swift
class func turbulenceField(smoothness: CGFloat, animationSpeed speed: CGFloat) -> Self
```

## Parameters

- `smoothness`: The smoothness of the turbulence field. Specify a value between 0.0 and 1.0, where 0.0 indicates the maximum amount of randomness in the generated field and 1.0 indicates the least amount of randomness.
- `speed`: The frequency at which the turbulence field changes, measured in Hertz (Hz). Specify 0.0 to create a turbulence field that does not change over time.

## Return Value

Return Value A field behavior object that applies turbulence to an item in motion.

## Discussion

Discussion The strength of the noise generated by this field is proportional to the velocity of the item in the field.

## See Also

### Getting the field behaviors

- [dragField()](uikit/uifieldbehavior/dragfield().md)
- [springField()](uikit/uifieldbehavior/springfield().md)
- [velocityField(direction:)](uikit/uifieldbehavior/velocityfield(direction:).md)
- [electricField()](uikit/uifieldbehavior/electricfield().md)
- [magneticField()](uikit/uifieldbehavior/magneticfield().md)
- [radialGravityField(position:)](uikit/uifieldbehavior/radialgravityfield(position:).md)
- [linearGravityField(direction:)](uikit/uifieldbehavior/lineargravityfield(direction:).md)
- [vortexField()](uikit/uifieldbehavior/vortexfield().md)
- [noiseField(smoothness:animationSpeed:)](uikit/uifieldbehavior/noisefield(smoothness:animationspeed:).md)
- [field(evaluationBlock:)](uikit/uifieldbehavior/field(evaluationblock:).md)