Study on Integrated Emissivity of an Isothermal Blackbody Cavity with Response Surface Methodology
LIU Bo1,ZHENG Wei1,LI Hai-yang1,MA Chao1,2,ZHU Xin-yun1
1. Shanghai Institute of Measurement and Testing Technology, Shanghai 201203, China
2. School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Abstract：High-performance blackbody radiation source is the key equipment for highly precision reproduction of radiation temperature. Integrated emissivity of blackbody cavity numerically simulated by finite volume method (FVM) has a good agreement with the result computed by Monte-Carlo method (MCM). Moreover, the FVM can predict the trend of integrated emissivity more accurately than MCM. Based on design of experiment with response surface method, key factors and their interactions of a cylindro-conical cavity, such as length-to-diameter ratio L/D, aperture diameter to cylinder diameter ratio Da/D, cone angle θ, and intrinsic emissivity of the cavity surface ε, are analyzed for integrated emissivity εe. The results show that Da/D and ε are significant factors; L/D and θ have less influence on εe. The results can provide references for the manufacture and study on high-performance blackbody radiation source.
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2019, Vol. 40 
