Integrated effective emissivity computation for non-isothermal non-axisymmetric cavities

• 作 者: 刘东 段远源 杨震
• 机 构: Key Laboratory of Thermal Science and Power Engineering of Ministry of Education,Beijing Key Laborat
• 出 处: Chinese Optics Letters
• 发表日期: 2013年02期
• 关键词: isothermal deviation uniformity numerically inclination emitted irradiated apert

Non-axisymmetric cavities are widely used as standard blackbody sources for radiation thermometry. The integrated effective emissivity is central to the blackbody design. Integrated effective emissivities are numerically calculated for non-isothermal, non-axisymmetric cavities. The average relative deviation is 0.087% when compared with Monte-Carlo results, indicating that this method can accurately calculate the integrated effective emissivities for non-isothermal, non-axisymmetric cavities. The effects of the wavelength, temperature uniformity, and bottom inclination angle are then analyzed.

Non-axisymmetric cavities are widely used as standard blackbody sources for radiation thermometry. The integrated effective emissivity is central to the blackbody design. compared with Monte-Carlo results, indicating that this method can accurately calculate the integrated effective emissivities for non-isothermal, non-axisymmetric cavities. The effects of the wavelength, temperature uniformity, and bottom inclination angles are then analyzed.