Houdini Deforming Flip
Well if you are looking for the technique behind Spider Man the water rise monster shot then you are in the right place. I found two ways until now to create this effect one of them "which I used in this setup" is by using the surfacepressure attribute to control the flip based on it's location in the animated model sdf volume, the other method is by using volumegradient vectors which will read the sdf field from the model and keep the particles tight. The result will differ