TY - JOUR
T1 - Thermal Shock Resistance of Chemical Vapor Deposited Zinc Sulfide under Active Cooling
AU - Li, Huimin
AU - Cheng, Tianbao
AU - Ma, Yongbin
AU - Xu, Baosheng
AU - Fang, Daining
AU - Yang, Yazheng
N1 - Publisher Copyright:
© 2017 World Scientific Publishing Europe Ltd.
PY - 2017/7/1
Y1 - 2017/7/1
N2 - The thermal shock resistance of chemical vapor deposited zinc sulfide (CVD ZnS) infrared side window of high-speed vehicles with convective cooling is studied using finite volume method. The involved factors are the surface heat flux, coolant temperature, convective heat transfer coefficient, and thermal shock initial temperature. All the material properties are temperature-dependent. The study shows that convective cooling can improve the thermal up shock resistance of CVD ZnS caused by aerodynamic heating at the upper surface. On the other hand, it can also lead to thermal down shock failure at the lower surface. The critical failure time corresponding to thermal down shock failure is much less than that corresponding to thermal up shock failure. Thus, thermal down shock failure should be avoided in application. The critical thermal shock initial temperatures, below which convective cooling will not cause thermal down shock failure, for different coolants are calculated.
AB - The thermal shock resistance of chemical vapor deposited zinc sulfide (CVD ZnS) infrared side window of high-speed vehicles with convective cooling is studied using finite volume method. The involved factors are the surface heat flux, coolant temperature, convective heat transfer coefficient, and thermal shock initial temperature. All the material properties are temperature-dependent. The study shows that convective cooling can improve the thermal up shock resistance of CVD ZnS caused by aerodynamic heating at the upper surface. On the other hand, it can also lead to thermal down shock failure at the lower surface. The critical failure time corresponding to thermal down shock failure is much less than that corresponding to thermal up shock failure. Thus, thermal down shock failure should be avoided in application. The critical thermal shock initial temperatures, below which convective cooling will not cause thermal down shock failure, for different coolants are calculated.
KW - Mach number
KW - Thermal shock resistance
KW - chemical vapor deposited zinc sulfide
KW - convective cooling
KW - coolant
KW - infrared side window
UR - http://www.scopus.com/inward/record.url?scp=85027019575&partnerID=8YFLogxK
U2 - 10.1142/S1758825117500703
DO - 10.1142/S1758825117500703
M3 - Article
AN - SCOPUS:85027019575
SN - 1758-8251
VL - 9
JO - International Journal of Applied Mechanics
JF - International Journal of Applied Mechanics
IS - 5
M1 - 1750070
ER -