Jithin SREEKUMAR, Talluri VAMSIKRISHNA, Honhar GUPTA, Mohammed Ibrahim SUGARNO

DOI Number: XXX-YYY-ZZZ

Conference number: HiSST 2024- 0067

An experimental investigation has been conducted to study the effectiveness of film cooling on convective and radiative heat transfer at the stagnation point of a body traveling at hypersonic speeds. For the current research campaign, a basic, flat-faced cylinder has been selected as the model. The coolant gas was injected through a tiny hole at the body’s stagnation point. Thermocouples were strategically positioned along radial direction on the model’s flat face to assess the convective heat transfer rates. Two different gases nitrogen and carbon dioxide, are used as coolant gases. A decrease in the convective heat transfer rate was observed for the cases where the nitrogen was injected as coolant gas compared to the case without any coolant gas injection. In order to obtain insights into radiation happening at the stagnation point of the model, the emission spectroscopy technique was employed. Radiation data showed emission lines arising from various contaminant species present in the shock tunnel facility.

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In Categories: 1.Events, HiSST 2024, Thermal and Energy Management
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