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code cleanup
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calbaker committed Dec 3, 2024
1 parent bd9111b commit 0677892
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Showing 2 changed files with 11 additions and 18 deletions.
25 changes: 9 additions & 16 deletions rust/fastsim-core/src/thermal.rs
Original file line number Diff line number Diff line change
Expand Up @@ -234,10 +234,7 @@ impl SimDriveHot {
},
None => (
None, // 1st return element
match init_state {
Some(state) => state, // 2nd return element
None => ThermalState::default(),
},
init_state.unwrap_or_default(),
),
};

Expand Down Expand Up @@ -416,8 +413,7 @@ impl SimDriveHot {
// limited between 0 and 1, but should really not get near 1
self.state.fc_qdot_per_net_heat = (self.vehthrm.fc_coeff_from_comb
* (self.state.fc_te_adiabatic_deg_c - self.state.fc_te_deg_c))
.min(1.0)
.max(0.0);
.clamp(0.0, 1.0);

// heat generation
self.state.fc_qdot_kw = self.state.fc_qdot_per_net_heat
Expand Down Expand Up @@ -481,8 +477,7 @@ impl SimDriveHot {
if let CabinHvacModelTypes::Internal(hvac_model) = &mut self.vehthrm.cabin_hvac_model {
// flat plate model for isothermal, mixed-flow from Incropera and deWitt, Fundamentals of Heat and Mass
// Transfer, 7th Edition
let cab_te_film_ext_deg_c =
0.5 * (self.state.cab_te_deg_c + self.state.amb_te_deg_c);
let cab_te_film_ext_deg_c = 0.5 * (self.state.cab_te_deg_c + self.state.amb_te_deg_c);
let re_l = self.air.get_rho(cab_te_film_ext_deg_c, None)
* self.sd.mps_ach[i - 1]
* self.vehthrm.cab_l_length
Expand All @@ -498,20 +493,18 @@ impl SimDriveHot {
(0.037 * re_l.powf(0.8) - a) * self.air.get_pr(cab_te_film_ext_deg_c)
};

if self.sd.mph_ach[i - 1] > 2.0 {
self.state.cab_qdot_to_amb_kw = 1e-3
* (self.vehthrm.cab_l_length * self.vehthrm.cab_l_width)
self.state.cab_qdot_to_amb_kw = if self.sd.mph_ach[i - 1] > 2.0 {
1e-3 * (self.vehthrm.cab_l_length * self.vehthrm.cab_l_width)
/ (1.0
/ (nu_l_bar * self.air.get_k(cab_te_film_ext_deg_c)
/ self.vehthrm.cab_l_length)
+ self.vehthrm.cab_r_to_amb)
* (self.state.cab_te_deg_c - self.state.amb_te_deg_c);
* (self.state.cab_te_deg_c - self.state.amb_te_deg_c)
} else {
self.state.cab_qdot_to_amb_kw = 1e-3
* (self.vehthrm.cab_l_length * self.vehthrm.cab_l_width)
1e-3 * (self.vehthrm.cab_l_length * self.vehthrm.cab_l_width)
/ (1.0 / self.vehthrm.cab_htc_to_amb_stop + self.vehthrm.cab_r_to_amb)
* (self.state.cab_te_deg_c - self.state.amb_te_deg_c);
}
* (self.state.cab_te_deg_c - self.state.amb_te_deg_c)
};

let te_delta_vs_set_deg_c = self.state.cab_te_deg_c - hvac_model.te_set_deg_c;
let te_delta_vs_amb_deg_c = self.state.cab_te_deg_c - self.state.amb_te_deg_c;
Expand Down
4 changes: 2 additions & 2 deletions rust/fastsim-core/src/vehicle_thermal.rs
Original file line number Diff line number Diff line change
Expand Up @@ -120,7 +120,7 @@ pub struct HVACModel {
/// coefficient between 0 and 1 to calculate HVAC efficiency by multiplying by
/// coefficient of performance (COP)
pub frac_of_ideal_cop: f64,
/// whether heat comes from fuel converter
/// whether heat comes from [FuelConverter]
pub use_fc_waste_heat: bool,
/// max cooling aux load
pub pwr_max_aux_load_for_cooling_kw: f64,
Expand Down Expand Up @@ -481,7 +481,7 @@ impl VehicleThermal {

/// parameter for engine surface area \[m**2\] for heat transfer calcs
pub fn fc_area_ext(&self) -> f64 {
PI * self.fc_l.powf(2.0 / 4.0)
PI * self.fc_l.powf(2.0) / 4.0
}

/// parameter for catalyst surface area \[m**2\] for heat transfer calcs
Expand Down

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