Hypersonic Heat Flux Reconstruction with Distributed Temperature Sensors

Heat Flux Reduction Research in Hypersonic Flow with Opposing Jet

A CFD study on heat flux reduction in hypersonic flow with opposing jet has been conducted. Flowfield parameters, reattachment point position, surface pressure distributions and heat flux distributions are obtained and validated with experiments. The physical mechanism of heat reduction has been analyzed. When the opposing jet blows, the freestream is blocked off, flows to the edges and not int...

Design, Calibration, and Implementation of a High Temperature Heat Flux Sensor for Hypersonic Flight Research

Recent advances in heat flux measurement have produced a robust thermopile heat flux sensor intended for use in hypersonic flight research. The High Temperature Heat Flux Sensor (HTHFS) is capable of operation at sensor temperatures up to 1050°C with simultaneous measurement of thermopile surface temperature and heat flux. Customization of the sensor design allows implementation in a broad rang...

The Method of Heat Flux Simulating in Hypersonic Aerothermodynamics

A new method is offered to simulate heat transfer processes in nonequilibrium viscous shock layers near the catalytic body surface at hypcrsonic wind tunnel and free natural flight conditions. The method is based on computations of nonequilibrium parameters in thin viscous sbock layers, and on an analogy with flows that arise behind normal shock waves. The obtained simplified relationships betw...

Heat flux sensors and infrared thermography

Thermal Product of Fast Response Temperature Sensors for Transient Heat Transfer Applications with Numerically Determined Surface Heat Flux History

A dynamic calibration technique for evaluating the thermal product values of different scratched temperature sensors is presented. These sensors have renewable junction, fast response time and it can be used for transient heat transfer measurements in hypersonic vehicles. Two types of scratch were used, mainly abrasive papers with different grit sizes and scalpel blades with different thickness...