forked from 1b-agent/fieldcraft-upstream
Christian Svensson
e9ccf10692
Demonstrate temperature slices and signed face-average wall heat with cool air passing an isothermal bracket. Register the original CPU-rendered gallery thumbnail and document the coarse transient setup. Part of #157.
59 lines
2.8 KiB
Rust
59 lines
2.8 KiB
Rust
//! A small transient heated-flow demonstration using the original upright bracket.
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//! Air at 20 °C passes an 80 °C bracket; no buoyancy or conjugate solid conduction.
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use fieldcraft_geometry::Shape;
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use serde_json::{Value, json};
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pub(super) fn script(bodies: &[Shape]) -> Value {
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let walls: Vec<Value> = bodies
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.iter()
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.filter(|b| b.name == "Bracket")
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.flat_map(|b| {
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b.faces().iter().map(move |f| {
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json!({
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"face": {"body": b.name, "face": f.name},
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"condition": {"type": "temperature", "value": 80.0}
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})
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})
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})
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.collect();
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let [density, viscosity] = super::AIR;
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json!([
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{"command": "model.units", "params": {"system": "mm-t-s-N-MPa"}},
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{"command": "model.material.create", "params": {"name": "Air", "density": density,
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"fluid": {"type": "newtonian", "viscosity": viscosity},
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"thermal": {"conductivity": 0.026, "specific_heat": 1.005e9}}},
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{"command": "model.fluid_domain.create", "params": {
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"name": "WarmAir", "material": "Air", "min": [-30, -20, 0], "max": [100, 60, 70], "spacing": 5,
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"faces": {"x_min": {"type": "velocity", "velocity": [1, 0, 0]}, "x_max": {"type": "pressure", "pressure": 0},
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"y_min": {"type": "slip"}, "y_max": {"type": "slip"}, "z_min": {"type": "wall"}, "z_max": {"type": "slip"}},
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"obstacles": ["Bracket"], "initial_velocity": [1, 0, 0],
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"thermal": {"initial_temperature": 20, "surfaces": walls,
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"faces": {"x_min": {"type": "temperature", "value": 20}}}
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}},
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{"command": "model.step.create", "params": {"name": "HeatedFlow", "procedure": {
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"type": "fluid", "domain": "WarmAir", "steps": 180, "frames": 6
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}}}
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])
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn heated_flow_sample_solves_and_exposes_temperature_and_wall_heat() {
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let mut s = crate::Session::default();
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s.execute("file.sample", &json!({"name": "heated-flow"})).unwrap();
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s.execute("solve.fluid", &json!({"backend": "cpu"})).unwrap();
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let report = s.execute("results.slice", &json!({"field": "temperature"})).unwrap();
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let max = report["contour"]["range"]["max"]["value"].as_f64().unwrap();
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let min = report["contour"]["range"]["min"]["value"].as_f64().unwrap();
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assert!(max > 20.1 && max <= 80.01 && min >= 19.99, "{report}");
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let report = s.execute("results.surface", &json!({"field": "wall_heat_flux"})).unwrap();
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assert_eq!(report["contour"]["unit"], "mW/mm²");
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assert!(report["wall_heat"]["faces"].as_array().unwrap().iter().any(|f| f["power"].as_f64().unwrap_or(0.0) < 0.0));
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assert_eq!(report["frames"].as_array().unwrap().len(), 7);
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}
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}
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