Smoke doesn't seem to have initial velocity

Question

I've been following this tutorial on how to make a simple explosion, I am using the same values, but I don't get the same effect.

It seems like my particles have no initial velocity.

Do you know what could cause this problem?

Updated .blend file:

His explosion:

My explosion:

My explosion after James' tips:

Answer 1

[Edited per our conversation below]...

I think blender is indeed having a problem with its cache.

Aside: I see you have disk cache vs. memory cache for Plane.001 vs Plane.002; perhaps your just trying various combinations.

Try:

1. deleting your 'blendcache_smoke_test' and 'cache_fluid_4b85f272' cache folders
2. In scripting, click on New and cc/paste and run the following script (also in the attached blend file) that should create things in the correct order (finding and running all PS sims before Fluid sims).

import bpy
import time

bakedItemCount=0
startTime=time.time()
for scene in bpy.data.scenes:
    for object in scene.objects:
        for modifier in object.modifiers:
            if modifier.type == 'PARTICLE_SYSTEM':
                print("Baking particles for ", object.name)
                override = {'scene': scene, 'active_object': object, 'point_cache': modifier.particle_system.point_cache}
                bpy.ops.ptcache.free_bake(override)
                bpy.ops.ptcache.bake(override, bake=True)   
                bakedItemCount+=1
    for object in scene.objects:
        for modifier in object.modifiers:
            if modifier.type == 'FLUID':
                if modifier.fluid_type == 'DOMAIN':
                    print("Baking fluid for ", object.name)
                    object.select_set(True)
                    bpy.context.view_layer.objects.active = object
                    bpy.ops.fluid.bake_data()
                    bakedItemCount+=1
            elif modifier.type == 'CLOTH':
                print("Baking cloth for ", object.name)
                override = {'scene': scene, 'active_object': object, 'point_cache': modifier.point_cache}
                bpy.ops.ptcache.free_bake(override)
                bpy.ops.ptcache.bake(override, bake=True)
                bakedItemCount+=1
                

endTime=time.time()
duration = int((endTime - startTime)+.999)
print( bakedItemCount, ' items baked over ', duration, ' seconds')

Frame 16 rendered with max samples = 16 to reduce render time: