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mp (SI unit: kg) is the particle mass,
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Cp (SI unit: J/(kg·K)) is the particle specific heat capacity,
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t (SI unit: s) is the time, and
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Qt (SI unit: W) is the sum of all heat sources and sinks affecting the particle.
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h (SI unit: W/(m2·K)) is the heat transfer coefficient,
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T (SI unit: K) is the temperature of the surrounding fluid at the particle’s position.
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T (SI unit: K) is the fluid temperature,
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t (SI unit: s) is time,
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u (SI unit: m/s) is the fluid velocity relative to the particle,
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k (SI unit: W/(m·K)) is the thermal conductivity of the fluid,
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ρ (SI unit: kg/m3) is the mass density of the fluid, and
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Cp,f (SI unit: J/(kg·K)) is the specific heat capacity of the fluid at constant pressure.
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εp (dimensionless) is the particle emissivity,
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T (SI unit: K) is the temperature of the enclosure or ambient surroundings.
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