Non-gray radiative spectral absorption coefficient of water vapor

Thermal radiation has a remarkable influence on chemical dynamics of combustion and structure of flame since it affects directly on temperature. The non-gray property of gas radiation must be considered when the radiation energy transport of flame combustion is calculated. In approximate calculation of radiation transport differential equation absorption coefficient is a fundamental parameter. Based on this, when the total pressure is 0.1 MPa, spectral radiative properties of water vapor are investigated in a gas temperature range of 300 K-2500 K, a pressure path length range of 0.01-1.0 MPa·m and partial pressure range of 0.0-0.1 MPa. By simplifying the Edwards exponential wide-band model, spectral parameters of bands radiative properties (including band spectral absorption coefficient, upper and lower band limits) are obtained.