.ThermofluidStream.Media.additionalMedia.Incompressible.JP8 .ThermofluidStream.Media.additionalMedia.Incompressible.JP8JP8 is a jet propulsion fuel often used in military aircraft. It is essentially the same as JetA, but with some additives that e.g. allows for higher mass flows without static electricity build up. The data of this implementation comes from Handbook of Aviation Fuel properties, Coordinating Research Council Inc.(USA), 1983. There are both more detailed property models available, for example in REFPROP, or with more attention to computational robustness, for example in Modelon´s Fuel library. The data used in this model does not take into account properties important for combustion of the fuel, only those important for transportation and heat storage.
The main source of the density gives data between -40 degC and 90 degC, linear in T, but complemetary relative density data is given as linear up to 120 degC, which implies that linear extraploation can be possible above 90 degC. Observe that the density can vary with 30% between batches or over time as the ligther fractions tend to evaporate depending on manner of storage. The typical density used here is an average of measured data.
The heat capacity data is
given between 30 degC and 180 degC, linear in T.
The thermal conductivity data is given
between -8 degC and 220 degC, linear in T.
The kinematic viscosity data is given
between -50 and 145 degC, with
log(viscosity) linear in T.
The true vapor pressure data is given
between 50 degC and 140 degC, with
log(VaporPressure) linear in 1/T(in Kelvin).
Density
Heat capacity
Dynamic viscosity
Thermal conductivity
Author:
Ingela Lind, M Sc, Ph D, Technical Fellow, Simulation and Thermal
Analysis, Vehicle Systems, SAAB Aerosystems, 2024