fig.01 - lab pipeline
ir. Dino van
Deijzen
Work page of a personal lab at the intersection of urban physics and agentic engineering. This is where validation studies, in-browser solvers and methodology pieces land - work that can be shared with colleagues.
Every study below has a live in-browser viewer, dashboard or validation feed. Numbers come from real solver runs - Geomilieu V2023.1 as anchor, STAR-CCM+ as benchmark, Lyn 1995 / Tominaga 2008 as validation references. What's live is the recombination of traffic / road surface / source terms; geometry and shielding are fixed.
acoustics wind CFD validation live
00 - today
2026-05-12
Progressive refinement - eight rules, two regimes, one loop
A campaign on how to build a CFD case properly: from crude L0 mesh + timestep to convergence, with validation references on every plot. Five canonical cases: round cylinder, square cylinder, BFS, cavity, CAARC v2.
Live dashboard with scenes per timestep, pinned legends, and per-case identity colors so a reader tracks a case through every panel. Clickable dashboard inside.
open the dashboard→01 - studies
4 items- CFD validation campaign - five canonical cases (round / square / BFS / cavity / CAARC v2)Campaign landing with links to 5 case diaries (round cylinder, square cylinder, BFS, cavity, CAARC v2) + methodology distillation + live dashboard. Progressive refinement: L0 (crude) -> L1 -> L2 with validation references on every plot.
- Veilingstraat 10 Utrecht - SRM II sandbox validationPer-probe Geomilieu V2023.1 reference vs our engine, exposed mean -0.01 dB, RMSE 1.89 dB on 9 of 10 probes. Live in-browser SRM II with delta-bars and 3D probes.
- Haarlem Grote Markt - SRM II A/B comparison (561 buildings, 99 road segments)Live in-browser SRM II comparison with A/B-slider. Traffic, % heavy, road surface, scope, period - live recompute via precomputed M[r,s] matrix. 561 BAG buildings, 99 NWB road segments.
- Tier-1 canonical CFD validation - Martinuzzi 1993 + Tominaga-Shirzadi 202121 runs across 2 solvers (warp_cfd_3d + FluidX3D) x 2 canonical cases (cube + 9-cube block) + grid convergence (nh=16 -> 24 -> 32). COST 732 metrics per run, ready validation feed.
02 - contact
work
Recent months have focused on work that can be tested. Validation studies compare our SRM II engine against Geomilieu V2023.1; a CFD campaign measures round and square cylinder, BFS, cavity and CAARC v2 against classical references. The interactive viewers for Haarlem Grote Markt and Veilingstraat 10 Utrecht run live in the browser. Alongside this, an urban-planner track is in build: a frictionless workflow from geometry to variant report, using BAG buildings, NWB roads, KNMI reference climate data and STAR-CCM+ as benchmark.