Research on Surface Temperature Rise Characteristics of TSP Film-based Structure in Shock Tunnel
Aiming at the problem that the heat test engineering design has been long puzzled by transverse heat transfer effect and surface temperature rise characteristic of temperature sensitive paint(TSP)film-based structure,firstly,the influence of model material,surface heat flux,TSP layer thickness and running time on the transverse heat transfer effect and surface temperature rise characteristic of TSP film-based structure are simulated and analyzed based on the transient heat transfer mathematical model,and the precondition of one-dimensional heat transfer hypothesis is given.Secondly,the surface temperature rise of different plate rudder models is measured under typical conditions through Φ0.6 m shock wind tunnel,and the reliability of numerical simulation results is compared and verified.Finally,the main influence laws of surface temperature rise characteristic of TSP film-based structure are obtained.The results can provide theoretical support for how to give consideration to TSP spraying thickness,model material selection and temperature measurement range for heat flux testing in shock wind tunnel,and guide the engineering design for material and thickness of film-based structure.
Shock tunnelTemperature sensitive paint(TSP)Film-based structureTransverse heat transferSurface temperature rise
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