a realtime fluid solution is available in Unity: Megaflow less detailed, but realtime on the CPU https://www.assetstore.unity3d.com/en/#!/content/24340 https:

a realtime fluid solution is available in Unity: Megaflow less detailed, but realtime on the CPU https://www.assetstore.unity3d.com/en/#!/content/24340 https://www.assetstore.unity3d.com/en/#!/content/24340 and Fluvio which has GPU acceleration.