Hi Conor, Thank you for your assistance in enabling me to achieve the effect of the FluidZones interacting with the cylinder and producing airflow variations. It was very helpful in achieving the desired effect of the flow field interacting with the cylinder and producing airflow variations. However, my ultimate goal is to simulate airflow around irregular shapes. I was wondering if there is a solution for the flow field to interact with irregular models as well. Thank you for your assistance, Wei

Hi Conor, After my adjustments, it still doesn't match the effect shown in your demo. My particle points still don't achieve the real-world physical effect. They penetrate the aero object, and the wind force and direction do not change when the wind field interacts with the aero object. The following screenshots show the parameters I adjusted. Thank you very much!

Hi Conor, I'm trying to use this approach, but I'm confused because the default fluid zone collides with the aero object sphere and is unable to react to the normal physical wind direction and velocity . as this screenshot. Rewritten VelocityFunction public override Vector3 VelocityFunction(Vector3 position) { Vector3 uniformFluidVelocity = windVelocity.GetVelocity(); if (!enableTurbulence) { return uniformFluidVelocity; } position *= turbulenceLengthScale / referenceLength; float time = Time.time * turbulenceTimeScale; return new Vector3(uniformFluidVelocity.x + 2f * windVelocity.speed * turbulenceMagnitude * (Mathf.PerlinNoise(position.y + time, position.z + time) - 0.5f), uniformFluidVelocity.y + 2f * windVelocity.speed * turbulenceMagnitude * (Mathf.PerlinNoise(position.x + time, position.z + time) - 0.5f), uniformFluidVelocity.z + 2f * windVelocity.speed * turbulenceMagnitude * (Mathf.PerlinNoise(position.x + time, position.y + time) - 0.5f)); } And in the LateUpdate method of FlowPointParticles.cs, the particle positions are used as input to the VelocityFunction." particle.velocity+=fluidZones[j].VelocityFunction(particle.position); Sorry, I'm a beginner with Unity. I'm not sure where I'm making mistakes or if there's something I've overlooked. Please let me know. Thank you very much!

Hi Conor, I saw your implementation of a wind simulation in the following demo on https://play.unity.com/en/games/ebfc045e-0126-4ea5-bc86-ba085b65cefe/ao-spinning-cylinder-custom-fluid-effector. I would like to recreate a similar effect, but I noticed that when I interact with the FluidZone, the wind direction does not change based on the objects I come into contact with. Therefore, I'm thinking of using the OnTriggerEnter method to detect if the FluidZone is collides with objects and updating the wind direction using windVelocity.GetVelocity() method. And I also plan to add particle fields for visual simulation of the wind. I'm not sure if my approach is correct. Thank you so much for your help. BR, Wei

Hi Conor, Thank you for your response. I did see the part where the VelocityFunction is rewritten in DefaultFluidZone.cs, using windVelocity.GetVelocity() to obtain the wind speed at that world position. However, what I am currently trying to achieve is the change in wind speed and direction when the wind field comes into contact with AeroObject. How can this be rewritten in the VelocityFunction to allow the wind field to detect objects in contact and alter the real-time wind direction and speed at that location? BR, Wei

Hi Conor, Could you provide an example of rewriting the VelocityFunction? I couldn't find the functionality in the source code that returns the wind direction and intensity when the wind field OnTriggerEnter object. Thank you~

Hi Conor, Thank you very much for your response. Can the current functions of this package simulate the airflow effect of wind interacting with objects? Thank you!