ParaView rendering

VTK output from DataDumper (see Basic usage) opens in ParaView. File naming often follows time-step or cycle indices; use File → Open and select *.vtk or *.vtk.series collections as produced by your run.

Spherical particles

Import particle data into ParaView.
Set Representation to Point Gaussian and adjust the glyph radius.
For polydisperse radii, open Toggle advanced properties, enable Use Scale Array, pick the scale array component, and tune Range.

General particles and walls

Set dump_reconstructed = True on DataDumper so non-spherical particles export reconstructed surface meshes.
Open the reconstructed VTK files in ParaView.

Contact force chain

Enable contact output: dumper.dump_contact_info = True (with your DataDumper instance dumper).
Load contact VTK data in ParaView.
Apply a Tube filter to the contact segments and adjust tube radius for visibility.

Ray tracing

Enable Ray Tracing at the bottom of the Properties panel.
Set Back end to OsPRay pathtracer.
Use Samples Per Pixel ≈ 5 for a reasonable speed/quality trade-off.
Set Background mode to Backplate (white works well for publications).
Adjust Material settings in Properties as needed.

Create animation

File → Save Animation; choose AVI (or a preferred container).
Suggested: 1920×1080, 24 fps for smooth playback.
Re-encode with ffmpeg or a cloud transcoder before embedding on the web.

For Tencent Cloud workflow (Chinese UI), the prior site recipe still applies: upload in 云点播 → 媒资管理, transcode (e.g. TESHD-H264-MP4-720P), then copy the playback URL from 管理.

Client / server

Tunnel to a remote pvserver:

ssh -L 11111:localhost:11111 -p [port] [user]@[remote-ip]

On the remote host:

pvserver

Locally, open ParaView and connect with File → Connect, mode Client / Server, host localhost, port 11111.