99 lines
1.7 KiB
C++
99 lines
1.7 KiB
C++
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#include "pump.hpp"
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#include <cmath>
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#include <iostream>
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using namespace sim::coolant;
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pump::pump(fluid_holder* src, fluid_holder* dst, double mass, double radius, double power, double l_per_rev, double friction) :
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src(src), dst(dst), mass(mass), radius(radius), l_per_rev(l_per_rev), friction(friction)
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{
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this->power = power;
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}
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double pump::get_flow() const
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{
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return l_per_rev * get_rpm() * 60;
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}
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double pump::get_flow_mass() const
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{
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return src->fluid.l_to_g(get_flow());
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}
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double pump::get_rpm() const
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{
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return velocity / (M_PI * mass * 0.001 * radius * radius);
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}
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const char* pump::get_state_string()
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{
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if(!powered)
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{
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return "Off";
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}
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if(idling && std::abs(get_flow()) < 1e-3)
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{
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return "Idle";
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}
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if(idling)
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{
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return "Coasting";
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}
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return "Revving";
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}
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static double calc_work(double j, double mass)
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{
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double m = 1;
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if(j < 0)
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{
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m = -1;
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}
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return m * std::sqrt(m * j / (mass * 0.001));
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}
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void pump::update(double dt)
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{
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idling = false;
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if(powered && !idling)
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{
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velocity += calc_work(dt * power, mass);
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}
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fluid_holder fh_src(*src);
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fluid_holder fh_dst(*dst);
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double src_heat = src->get_heat();
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double p_diff_1 = dst->get_pressure() - src->get_pressure();
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double src_volume = fh_src.extract_fluid(get_flow() * dt);
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double dst_volume = fh_dst.add_fluid(src_volume, src_heat);
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src->extract_fluid(dst_volume);
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dst->add_fluid(dst_volume, src_heat);
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double p_diff_2 = dst->get_pressure() - src->get_pressure();
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double p_diff = (p_diff_1 + p_diff_2) / 2;
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double work = p_diff * dst_volume * 0.001 + get_rpm() * 60 * dt * friction;
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velocity -= calc_work(work, mass);
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if(dst->get_level() > 400 || src->get_level() < 10)
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{
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// idling = true;
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}
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else
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{
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// idling = false;
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}
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}
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