The ability to add a simple fluid effect to a scene is brilliant! What is great is that you can do it easily with Blender scripts. We'll clear the scene, add a ground plane and a cube. Then we'll create an sphere - which will be our particle emmiter (fluid is going to flow out of this sphere).
Simply a matter of adding in a light and camera - and we're done!
This is what the fluid simulation looks like after a few frames in the layout window.
<?php
import bpy
# 1. Clear the scene
bpy.ops.object.select_all(action='SELECT')
bpy.ops.object.delete()
# 2. Add plane (ground)
bpy.ops.mesh.primitive_plane_add(size=10, location=(0, 0, 0))
plane = bpy.context.object
plane.name = "Ground"
# 3. Add cube
bpy.ops.mesh.primitive_cube_add(size=2, location=(0, 0, 1))
cube = bpy.context.object
cube.name = "Cube"
# Make cube a fluid obstacle
bpy.ops.object.modifier_add(type='FLUID')
cube.modifiers["Fluid"].fluid_type = 'EFFECTOR'
#cube.modifiers["Fluid"].effector_settings.effector_type = 'OBSTACLE'
# 4. Add small ico sphere (twice height above cube)
bpy.ops.mesh.primitive_ico_sphere_add(radius=0.5, location=(0, 0, 5))
sphere = bpy.context.object
sphere.name = "FluidEmitter"
# 5. Set up fluid simulation
# First make the sphere a fluid emitter
bpy.ops.object.modifier_add(type='FLUID')
sphere.modifiers["Fluid"].fluid_type = 'FLOW'
sphere.modifiers["Fluid"].flow_settings.flow_type = 'LIQUID'
sphere.modifiers["Fluid"].flow_settings.flow_behavior = 'INFLOW'
# Create a domain (must be named "Fluid" in Blender 4.1)
bpy.ops.mesh.primitive_cube_add(size=8, location=(0, 0, 4))
domain = bpy.context.object
domain.name = "FluidDomain"
# Set as fluid domain
bpy.ops.object.modifier_add(type='FLUID')
domain.modifiers["Fluid"].fluid_type = 'DOMAIN'
domain.modifiers["Fluid"].domain_settings.domain_type = 'LIQUID'
domain.modifiers["Fluid"].domain_settings.use_mesh = True
domain.modifiers["Fluid"].domain_settings.resolution_max = 32
# Add pink fluid material
mat = bpy.data.materials.new(name="PinkFluid")
domain.data.materials.append(mat)
mat.use_nodes = True
nodes = mat.node_tree.nodes
nodes.clear()
bsdf = nodes.new('ShaderNodeBsdfPrincipled')
bsdf.inputs['Base Color'].default_value = (0.9, 0.4, 0.7, 1.0) # Pink
bsdf.inputs['Roughness'].default_value = 0.1
output = nodes.new('ShaderNodeOutputMaterial')
mat.node_tree.links.new(bsdf.outputs['BSDF'], output.inputs['Surface'])
# Add camera for better view
bpy.ops.object.camera_add(location=(8, -8, 6))
camera = bpy.context.object
camera.rotation_euler = (1.2, 0, 0.8)
bpy.context.scene.camera = camera
# Add lighting
bpy.ops.object.light_add(type='SUN', location=(5, 5, 10))
sun = bpy.context.object
sun.data.energy = 5
# Reset animation frame
bpy.context.scene.frame_set(1)
Tweaks
We can reposition the camera and make the surface of the fluid 'smooth' - also increase the resolution and do a render - and this what it looks like.
Animation runs for about 50ish frames so we get the fluid mostly covered the cube and is filling up the domain box.
<?php
import bpy
# 1. Clear the scene
bpy.ops.object.select_all(action='SELECT')
bpy.ops.object.delete()
# 2. Add plane (ground)
bpy.ops.mesh.primitive_plane_add(size=10, location=(0, 0, 0))
ground = bpy.context.object
ground.name = "Ground"
# 3. Add cube
bpy.ops.mesh.primitive_cube_add(size=2, location=(0, 0, 1))
cube = bpy.context.object
cube.name = "Cube"
# Make cube a fluid obstacle
bpy.ops.object.modifier_add(type='FLUID')
cube.modifiers["Fluid"].fluid_type = 'EFFECTOR'
# 4. Add small ico sphere (twice height above cube)
bpy.ops.mesh.primitive_ico_sphere_add(radius=0.5, location=(0, 0, 5))
sphere = bpy.context.object
sphere.name = "FluidEmitter"
# 5. Set up fluid simulation
# First make the sphere a fluid emitter
bpy.ops.object.modifier_add(type='FLUID')
sphere.modifiers["Fluid"].fluid_type = 'FLOW'
sphere.modifiers["Fluid"].flow_settings.flow_type = 'LIQUID'
sphere.modifiers["Fluid"].flow_settings.flow_behavior = 'INFLOW'
# Create a domain (must be named "Fluid" in Blender 4.1)
bpy.ops.mesh.primitive_cube_add(size=8, location=(0, 0, 3.85))
domain = bpy.context.object
domain.name = "FluidDomain"
# Set as fluid domain
bpy.ops.object.modifier_add(type='FLUID')
domain.modifiers["Fluid"].fluid_type = 'DOMAIN'
domain.modifiers["Fluid"].domain_settings.domain_type = 'LIQUID'
domain.modifiers["Fluid"].domain_settings.use_mesh = True
domain.modifiers["Fluid"].domain_settings.resolution_max = 64
# Adjust domain size by scaling the object
domain.scale = (1.0, 1.0, 1.0)
bpy.ops.object.transform_apply(scale=True) # Apply the scale
# Set smooth shading for fluid surface
domain.data.polygons.foreach_set('use_smooth', [True] * len(domain.data.polygons))
domain.data.update()
# Add pink fluid material
mat = bpy.data.materials.new(name="PinkFluid")
domain.data.materials.append(mat)
mat.use_nodes = True
nodes = mat.node_tree.nodes
nodes.clear()
bsdf = nodes.new('ShaderNodeBsdfPrincipled')
bsdf.inputs['Base Color'].default_value = (0.9, 0.4, 0.7, 1.0) # Pink
bsdf.inputs['Roughness'].default_value = 0.1
output = nodes.new('ShaderNodeOutputMaterial')
mat.node_tree.links.new(bsdf.outputs['BSDF'], output.inputs['Surface'])
# Add camera for better view
bpy.ops.object.camera_add(location=(10, -10, 6))
camera = bpy.context.object
camera.rotation_euler = (1.2, 0, 0.8)
bpy.context.scene.camera = camera
# Add lighting
bpy.ops.object.light_add(type='SUN', location=(5, 5, 10))
sun = bpy.context.object
sun.data.energy = 5
# Reset animation frame
bpy.context.scene.frame_set(1)
Visitor:
Copyright (c) 2002-2026 xbdev.net - All rights reserved.
Designated articles, tutorials and software are the property of their respective owners.
