Example: serpentine_venturi_1d_vs_2d

Figure 15.4 — Example: Serpentine Venturi 1D vs 2D Figure 15.4 — Example: Serpentine Venturi 1D vs 2D

Source: crates/cfd-2d/examples/serpentine_venturi_1d_vs_2d.rs
Crate: cfd-2d

Overview

Cross-fidelity comparison of a serpentine-Venturi device solved at two fidelity levels: 1D lumped-parameter vs 2D full N-S. Quantifies the fidelity gap.

Device

A serpentine channel with Venturi constrictions at each U-turn (Dean-flow apex) using the serpentine_venturi_rect preset from cfd-schematics.

Comparison

Fidelity	Method	Code
1D	Hagen-Poiseuille network	`network_from_blueprint`
2D	SIMPLE N-S per channel	`Network2DSolver::solve_all`

Prints a channel-by-channel table: flow rates, pressure drops, wall shear stress, and outlet-flow agreement percentages.

Dean Number Relevance

De = Re · √(D_h / 2R_c)
```console

Secondary Dean vortices pre-focus cells toward the centreline — ideal for cavitation-enhanced CTC lysis in SDT.

## Run

```bash
cargo run -p cfd-2d --example serpentine_venturi_1d_vs_2d

Part Reference

Part VIII — 2-D and Schematic Examples